SERIES SOURCE PROJECTOR
880 SERIES MODEL
150Ci
880 SERIES MODEL
130Ci
880 SERIES MODEL
OPERATING
AND MAINTENANCE
MANUAL
50Ci
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CONTENTS
1
2
3
4
5
6
7
8
TECHNICAL SPECIFICATIONS
1.1 - 1.6
2.1 - 2.11
3.1 - 3.9
4.1 - 4.16
5.1 - 5.12
6.1 - 6.3
7.1 - 7.2
8.1
OPERATING INSTRUCTIONS
DAILY INSPECTION INSTRUCTIONS
MAINTENANCE INSTRUCTIONS
SAMPLE TRANSPORTATION INSTRUCTIONS
DEFINITIONS AND TERMS
EMERGENCIES AND PERSONNEL SAFETY
INSTRUCTIONS FOR DISPOSAL
ii
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FRONT VIEW
Outlet port
880 Delta 150Ci (5.55TBq)
Maximum package weight
Guide tube connector
With jacket
52lb (24kg)
Without jacket 46lb (21kg)
880 Sigma 130Ci (4.81TBq) 880 Elite 50Ci (1.85TBq)
Maximum package weight
Maximum package weight
With jacket
Without jacket 46lb (21kg)
52lb (24kg) With jacket 42lb (19kg)
Without jacket 37lb (17kg)
REAR VIEW
Locking mechanism
Remote control connector
9in
229mm
13 .3in
338mm
7.5in
191mm
iii
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TECHNICAL SPECIFICATIONS
Exposure device description
The Model 880 Delta, Model 880 Sigma and Model 880 Elite are physically small,
lightweight, portable industrial radiographic exposure devices. The ‘S’ tube design exposure
device consists of a cast depleted Uranium (DU) shield contained and secured within a
300 series stainless steel tube with stainless steel discs welded at each end to form a cylinder
shaped housing. Both discs are recessed into the stainless steel tube to provide protection
for the locking mechanism at the rear side and the outlet port at the front side.
The welded tubular housing is oriented horizontally to provide easy access to the locking
mechanism and source assembly connector and to provide easy access to the outlet port for
connection of projection sheaths. The internal void space of the welded housing is filled
with polyurethane foam to prevent the ingress of water or foreign material but is open to
atmospheric pressure. The stainless steel housing containing the DU shield, locking
mechanism, outlet port, protective covers and required labels comprise the radioactive
material transport package.
A plastic jacket surrounds the welded housing and serves as a protective barrier for the labels
and provides the means for carrying and placement during use as a radiographic exposure
device. The Model 880 Delta is identified by a yellow colored jacket, the Model 880 Sigma is
identified by a black colored jacket and the Model 880 Elite is identified by a blue colored
jacket. The plastic jacket incorporates a carrying handle and a base that is used during
radiographic operations but is not required for transportation purposes. The plastic jacket may
be removed for certain applications such as when the exposure device is securely mounted
to a pipe-crawler locomotive or a pipe-liner sled.
The Model 880 Delta, Sigma and Elite exposure devices are designed, tested, manufactured to
meet the requirements of ANSI N432-1980, ISO 3999-1:2000(E), IAEA-ST1, IAEA TS-R-1 (1996),
USNRC 10CFR34, 10CFR71 and 49CFR173 requirements. Additionally, the exposure device is
designed, manufactured and serviced under a ISO 9001 QA program and a USNRC 10CFR71,
Subpart H QA program. The QA program also includes the reporting requirements of
USNRC 10CFR21 for suppliers of source and byproduct materials.
Source assembly
Titanium ‘S’ tube
Welded shield container
Protective
Plunger lock
plastic jacket with
carrying handle
Locking mechanism
Outlet port
Remote
control
Guide tube
connector
connector
Depleted Uranium shield
1.1
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TECHNICAL SPECIFICATIONS
Applications
The Model 880 devices are used for industrial applications of gamma radiography, mainly
with Iridium-192, to inspect materials and structures in the density range of approximately
2.71g/cm3 through 8.53g/cm3. The Model 880 devices also accommodate low energy
isotopes to permit radiography of materials and structures of thin sections of steel and low-
density alloys. The Model 880 exposure devices are also designed for use with low activity
sources with high photon energies that are used for mass absorption (gamma scanning)
studies of high-density materials up to 18.7g/cm3.
Standard source assembly
Metallic Iridium-192 discs and pellets are doubly encapsulated in welded stainless steel or
titanium capsules. The sealed sources are designed and tested to achieve an ISO/ANSI minimum
classification of 77C43515 to comply with the IAEA and USDOT requirements for
‘Special Form’ radioactive material. The ISO/ANSI classification 77C43515 stated in this manual
refers to the complete source assembly. The inner capsule (excluding X.540N) has been tested to
ISO/ANSI 77C64515 and therefore meets all the requirements of the IAEA Transport Regulations.
The sealed source is swaged to one end of a source holder consisting of a short flexible steel
cable which has the female half of a connector at the other end, used for coupling to a
control cable connector. The source assembly also has a stainless steel stop-ball swaged onto it
slightly forward from the source holder's connector. The purpose of the stop-ball is to provide
mechanical positioning of the source assembly within the exposure device's shielding and to
provide a means of securing the source assembly in the exposure device's locking mechanism.
Model 880 Delta authorized contents
Isotope
Assembly
model
number
Gamma
energy
range
Half life
Approximate
steel working maximum
thickness
2-20mm
Device/source
capacity
Ytterbium-169 918
8-308keV
32 days
20Ci 0.74TBq
80Ci 3.00TBq
150Ci 5.55TBq
65mCi 2.40GBq
Selenium-75
Iridium-192
Cobalt-60
A424-25W 66-401keV
120 days 3-29mm
74 days 12-63mm
1.17-1.33MeV 5.27 years 50-150mm
A424-9
206-612keV
A424-19
Model 880 Sigma authorized contents
Isotope
Assembly
model
number
Gamma
energy
range
Half life
Approximate
steel working maximum
thickness
Device/source
capacity
Ytterbium-169 918
8-308keV
32 days
2-20mm
20Ci 0.74TBq
80Ci 3.00TBq
130Ci 4.81TBq
25mCi 925MBq
Selenium-75
Iridium-192
Cobalt-60
A424-25W 66-401keV
120 days 3-29mm
74 days 12-63mm
1.17-1.33MeV 5.27 years 50-150mm
A424-9
206-612keV
A424-19
Model 880 Elite authorized contents
Isotope
Assembly
model
number
Gamma
energy
range
Half life
Approximate
steel working maximum
thickness
Device/source
capacity
Ytterbium-169 918
8-308keV
32 days
2-20mm
20Ci 0.74TBq
80Ci 3.00TBq
50Ci 1.85TBq
25mCi 925MBq
Selenium-75
Iridium-192
Cobalt-60
A424-25W 66-401keV
120 days 3-29mm
74 days 12-63mm
1.17-1.33MeV 5.27 years 50-150mm
A424-9
206-612keV
A424-19
1.2
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TECHNICAL SPECIFICATIONS
Source output
At 1m per Ci (37GBq)
0.125R/hr 1.25mSv/hr
0.203R/hr 2.03mSv/hr
At 1ft per Ci (37GBq)
Ytterbium-169
Selenium-75
Iridium-192
Cobalt-60
1.3R/hr/Ci 13.0mSv/hr
2.2R/hr/Ci 22.0mSv/hr
5.2R/hr/Ci 52.0mSv/hr
14.0R/hr/Ci 140mSv/hr
0.48R/hr
1.30R/hr
4.80mSv/hr
13.0mSv/hr
Selected attenuation data
Material
Approximate
material
density
Approximate half value thickness
inches(mm)
Ytterbium-169 Selenium-75 Iridium-192
Cobalt-60
2.400 (61.0)
–
Concrete
Aluminum 2.65g/cm3
2.35g/cm3
1.140 (29.0)
–
1.180 (30.0)
1.100 (27.0)
0.315 (8.0)
0.039 (1.0)
0.032 (0.8)
–
1.700 (43.2)
–
Steel
Lead
7.80g/cm3
11.34g/cm3 0.047 (1.2)
17.80g/cm3
18.70g/cm3
0.170 (4.3)
0.512 (13.0)
0.200 (5.1)
0.130 (3.3)
0.050 (1.3)
0.827 (21.0)
0.500 (12.7)
0.310 (7.9)
0.270 (6.8)
Tungsten
DU
–
–
Operating distance
The distance between the remote control and the exposure head is determined by summing
the length of the remote control conduits plus the total length of source guide tubes used,
and normally should not exceed 47ft (14.2m).
Standard remote controls:
25ft (7.6m), 35ft (10.7m), 50ft (15m).
Standard source guide tubes (projection sheaths):
7ft (2.1m) set of three source guide tubes: 21ft total (6.3m).
NOTE
The total length of source guide tubes utilized must be shorter in length than the remote
controls to ensure the source assembly will project into the working position.
e.g. When using 25ft (7.6m) remote controls, a maximum of three
7ft (2.1m) source guide tubes can be used with a combined length of 21ft (6.4m).
Conversely, when using 35ft (10.7m) remote controls, a maximum of four
7ft (2.1m) source guide tubes can be utilized.
When using 50ft (15m) remote controls, a maximum of six 7ft (2.1m) source guide
tubes can be utilized. This limitation is due to the weight and friction of remote control
cable length.
1.3
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TECHNICAL SPECIFICATIONS
Control specifications
Complete remote control assemblies
Product code
Model number
Control cable length
Unit weight
TAN66425
TAN66435
TAN66450
664/25
664/35
664/50
25ft (7.6m)
35ft (10.7m)
50ft (15.2m)
21lb (10kg)
24lb (11kg)
27lb (12kg)
TAN69325
TAN69335
TAN69350
693/25
693/35
693/50
25ft (7.6m)
35ft (10.7m)
50ft (15.2m)
21lb (10kg)
24lb (11kg)
27lb (27kg)
TAN69225
TAN69235
TAN69250
692/25
692/35
692/50
25ft (7.6m)
35ft (10.7m)
50ft (15.2m)
21lb (10kg)
24lb (11kg)
27lb (12kg)
88325
88335
88350
883/25
883/35
883/50
25ft (7.6m)
35ft (10.7m)
50ft (15.2m)
Model 664 control storage reel unit size
Length
Width
Height
21in (533mm)
12in (305mm)
6.6in (168mm)
Source guide tube (with source stop)
Product code
Model number
Length
TAN48906
48906-X
48931-7
48931-X
48906
7ft (2.1m) male 1-18 threaded fitting
Customer specified length
7ft (2.1m) with bayonet fitting
Customer specified length
48906-X
48931-7
48931-X
Source guide tube extension
Product code
Model number
Length
TAN48907
48930-7
48930-X
48907
48930-7
48930-X
7ft (2.1m) male/female 1-18 threaded fittings
7ft (2.1m) bayonet fitting/female 1-18
Customer specified length
NOTE
X indicates customer can order lengths
other than the standard length.
The Model 664 reel and 693 pistol-grip
controls are equipped with odometers.
The Model 692 pistol-grip control
are not equipped with an odometer.
Exposure device specifications
Manufacturer
Length
Sentinel - AEA Technology QSA, Inc.
40 North Avenue, Burlington,
Massachusetts, USA 01803.
13.33in (33.8cm) all models.
Width
7.5in (19.1cm) all models.
Primary application
Industrial gamma radiography.
Height
9in (22.9cm) all models.
Model number
Model 880 Delta, Model 880 Sigma
and Model 880 Elite.
1.4
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TECHNICAL SPECIFICATIONS
Weight of exposure device
Certification
Delta 52lb (24kg), Sigma 52lb (24kg)
Elite 42lb (19kg).
Type B(U) package,
Certification Number USA/9296/B(U)-XX
(for XX, enter either 85 or 96 according to
the package certification) and for
Canadian shipments CDN/E199/-XX
(for XX, enter either 85 or 96 according to
the package certification number).
Weight of depleted Uranium shield
Delta 34lb (15.4kg), Sigma 34lb (15.4kg)
Elite 25lb (11.4kg).
Activity of depleted Uranium shield
Delta 5.4mCi (200MBq)
Sigma 5.4mCi (200MBq)
Elite 3.8mCi (141MBq).
Construction
A depleted Uranium (DU) shield is encased within a welded tubular stainless steel shell with
stainless steel end plates. The interior void space is filled with rigid polyurethane foam.
The exposure device body is encased in an engineered plastic jacket also consisting of the
handle and a base.
Materials
Titanium ‘S’ tube, DU shield, 300 series stainless steel tubular shell and plate, aluminum,
brass, tungsten and polyurethane.
Maximum capacities
Delta 150Ci (5.55TBq), Sigma 130Ci (4.81TBq), Elite 50Ci (1.85TBq) of Ir-192.
Inspection requirements
Daily pre-operational inspection for obvious damage to the system.
Maintenance requirements
Most national regulations require inspection and maintenance of the system at
quarterly intervals. The complete annual servicing ensures the integrity of the system.
Shorter frequencies of inspection and maintenance are required when the system is
operated under severe operating environments. In some cases, the system should be
serviced immediately after certain jobs in severe environmental working conditions.
Operating temperature range
-40°F to 300°F (-40°C to 149°C)
Source assembly
USNRC Model Number: A424-9 source assembly with a doubly encapsulated Ir-192 sealed
source. The IAEA/USDOT Special Form Certificate number is USA/0335/S. Optional isotopes
that may be utilized in the Model 880 exposure devices are listed in this section.
NOTICE
This industrial radiography system is used as an exposure device and a Type B(U) shipping
container for AEA Technology QSA, Inc. source assemblies. The purpose of this manual is
to provide information which will assist qualified radiographers in using the Model 880
Delta, Sigma and Elite gamma radiography system. The user must be thoroughly familiar
with this instruction manual before attempting operation and use of this equipment.
In order to use this equipment or perform source changes, users within the USA must be
specifically licensed to do so. Applications for a license should be filed with the Materials
Licensing Section of the appropriate U.S. Nuclear Regulatory Commission regional office or
with the appropriate Agreement State office. All users within Canada must have a Canadian
Nuclear Safety Commission license.
1.5
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TECHNICAL SPECIFICATIONS
Prior to the initial use of the exposure device as a shipping container, the user must register
with the Transportation Certification Branch, Office of Nuclear Safety and Security,
U.S. Nuclear Regulatory Commission. The user should have in his possession a copy of the
Certificate of Compliance issued for the exposure device, which may be obtained from
Sentinel, AEA Technology QSA customer service centers upon request. This also applies to
users from Agreement States and other regulatory jurisdictions.
It is the responsibility of users of this equipment outside of the United States to comply
with all local, national and international regulatory, licensing and transportation rules and
regulations as they apply in their respective countries.
Warranty and limitation of liability
AEA Technology QSA, Inc. (herein referred to as the manufacturer) warrants its product
which it manufactures and sells to be free from defects in material and workmanship
for a period of one year from the date of shipment. This warranty shall not apply to any
product or parts which have been subjected to misuse, improper installation, repair,
alteration, neglect, accident, abnormal conditions of operation, or use in any manner
contrary to instructions.
The manufacturer's liability under such warranty shall be limited to replacing or repairing,
at its option, any parts found to be defective in such respects, which are returned
to the manufacturer, transportation prepaid; or at its option, to returning the purchase
price thereof.
The warranty on other manufacturer's components shall be that of the original manufacturer
whose warranty shall be binding.
In no event shall the manufacturer be liable for any incidental or consequential damages,
whether or not such damages are alleged to have resulted from the use of such product in
accordance with instructions given by or referred to by the manufacturer.
AEA Technology QSA, Inc. assumes no liability or responsibility for the usage of any
radioactive material or device generating penetrating radiation used in connection with this
product. The use of such material or generators in any manner other than prescribed in the
U.S. Nuclear Regulatory Commission or equivalent Agreement State or permitted by any
regulation of the U.S. Nuclear Regulatory Commission or State Regulation may constitute a
violation of such license terms.
All other warranties, except those warranties expressly stated herein, including without
limitation warranties of, merchantability and implied warranties of fitness,
are expressly excluded.
The warranty on this device is specifically limited to its use only with sealed sources and
connectors, parts, and accessories manufactured by AEA Technology QSA, Inc.
AEA Technology QSA, Inc. has received equipment approvals for the Model 880 Delta,
Sigma and Elite systems from the Commonwealth of Massachusetts, the USNRC
Transportation Branch, The U.S. Department of Transportation, and the Canadian Nuclear
Safety Commission. This requires use of Agreement State or USNRC registered and
approved remote controls, control cables, projection sheaths, sealed source assemblies,
remote control cranks used in conjunction with the Model 880 Delta, Sigma or Elite.
For additional information on compliance with Type B(U) certifications, USNRC 10CFR34,
ANSI N432-1980 or ISO 3999-1:2000(E) please contact AEA Technology QSA, Inc.
Sentinel, AEA Technology QSA, Inc. shall not be liable for any errors or omissions contained
herein and the provision by Sentinel, AEA Technology QSA, Inc. of the information set out in
this manual does not in itself constitute acceptance of any liability on the part of Sentinel,
AEA Technology QSA, Inc.
1.6
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OPERATING INSTRUCTIONS
QCP385 issue 2
Job site safety precautions
Instruments
The radiographer and his assistant must at all times wear a film badge or TLD and pocket
dosimeter with a range of 0-200mRem (0-2mSv). Regulatory requirements in the USA also
require that an audible alarm ratemeter be worn at temporary jobsites. Specifically, those
locations that are not permanent radiographic installations equipped with functional door
interlocks and audible/visual alarms.
Radiographers in the USA must also have a survey meter capable of measuring in the range
2mR/hr (20µSv/hr) up to 1,000mR/hr (10mSv/hr). Canadian regulations require that survey
meters used for industrial radiography be capable of measuring from 2µSv/hr (0.2mR/hr)
and up to 100mSv/hr (10R/hr). In any regulatory jurisdiction, always verify survey meter
requirements affecting the range and calibration requirements prior to engaging in
industrial radiography operations.
An audible ‘chirper’ pocket alarm may be required in some countries.
Restricted Area
Radiography must be performed only in a restricted area which is marked with the
appropriate radiation warning signs and secured against unauthorized entrance.
Distance
Since the source emits high levels of radiation it is good practice to operate the system from
as great a distance as possible.
Shielding
Whenever possible, situate the radiographic exposure area in a room with suitably thick
walls, floor, ceiling and doors. Whenever possible, the use of a collimator provides effective
shielding to reduce radiation levels outside of the central beam. It is recommended that
collimators be used at temporary job sites to minimize occupational exposure to radiation.
Surveillance
Radiography systems must be operated only by trained and qualified radiographers or
assistants working under their direct supervision. The radiographer must be physically
present at the site and able to control and limit access to the restricted area.
Locking
Keep the exposure device locked while assembling the system and when not being used to
perform radiography. Locked is defined as the exposure device's lock is fully engaged with
the key removed. Store the key in a secured location.
2.1
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OPERATING INSTRUCTIONS
It is essential that the 5 STEPS set out below are followed
in the correct order to ensure safe operation and compliance
with regulations.
STEP 1 Exposure device survey
STEP 2 Connecting the source guide tube(s)
STEP 3 Connecting the remote control cable
STEP 4 Projecting and retracting the source assembly
STEP 5 Dismantling equipment
STEP 1
Exposure device survey
Check the operation of the survey meter by measuring the radiation level at the surface of
the exposure device. The radiation level measurement should not exceed 200mR/hr
(2mSv/hr) on any surface of the exposure device. Use this measurement for verification
surveys of the source assembly's return to fully shielded/secured position within the exposure
device after each radiographic exposure.
STEP 2
Source guide tube (projection sheath) layout
Ensure all source guide tubes that will be utilized have received a daily inspection according
to the daily inspection section of this manual. Position and secure the source stop (exposure
head) of the terminating source guide tube at the radiographic focal position using the
tripod stand and swivel clamps or some other secure and suitable means.
Ensure that a source stop (end stop) is in place on the terminating source guide tube.
Use a collimator (beam limiter) to limit the primary beam in unwanted directions.
Determine where the exposure device will be positioned and lay out the source guide tubes
as straight as possible, with no bend radius less than 20in (0.5m) to avoid restricting the
movement of the source assembly.
Make sure that the source guide tubes do not contact any heated surface greater than
140ºF (60°C).
Avoid any risk of crushing the source guide tube(s) by falling objects, vehicles or doorways
during set-up and during radiographic exposure.
Connecting the source guide tube(s)
The source guide tubes must always be attached to the outlet port of the device before
connecting the remote controls in the set-up for a radiographic exposure.
Connect the source guide tube(s) to the exposure device outlet port as shown.
2.2
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OPERATING INSTRUCTIONS
STEP 2
Connecting the source guide tube(s)
Simultaneously pull and rotate the
spring-loaded outlet port cover a quarter of
a turn in a clockwise direction.
1
2
3
4
Insert the bayonet fitting of the source guide
tube into the exposed outlet port.
Align the GREEN MARKINGS on the bayonet
fitting and outlet port.
Rotate a quarter of a turn counter-clockwise.
Rotate the spring-loaded outlet port cover
an additional 60 degrees in a clockwise direction
until it stops.
2.3
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OPERATING INSTRUCTIONS
STEP 2
WARNING
Ensure that the available length of the control cable is greater than the total length
of the source guide tubes. See the technical specifications section for details.
If the remote control conduits are shorter than the total length of the
source guide tubes:
1 The source assembly cannot be projected all the way to the source stop of the
terminating source guide tube and be correctly positioned for the exposure.
2 The source assembly may not reach a collimator; therefore, restricted area dose rates
may be higher than expected.
3 The control cable may be cranked right off the drive wheel of remote controls
that are not be fitted with a safety retaining spring. This scenario must be treated
as an EMERGENCY.
STEP 3
Remote control conduit layout
Lay out the remote control conduits as straight as possible, with no bend radii less than
about 36in (approximately 1m).
Avoid any risk of crushing the remote control conduits by falling objects, moving vehicles or
closing doors, etc.
The remote control crank mechanism (operator's hand-crank) should be placed as far away
from the source focal position as possible (preferably behind shielding).
Connecting the remote control cable
Connect the control cable to the source projector as shown.
2.4
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OPERATING INSTRUCTIONS
STEP 3
Connecting the remote control cable
Unlock the plunger lock with
the key.
1
2
3
Turn the selector ring
from LOCK to CONNECT.
The protective cover will disengage
from the projector.
2.5
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OPERATING INSTRUCTIONS
STEP 3
Connecting the remote control cable
Insert the protective cover into the lock housing
during use of the device.
4
5
6
7
Check the control cable and source assembly
connectors using the NO GO gauge according
to the daily inspection section.
Remove the protective rubber cap from the remote
control connector.
Slide the remote control connector assembly's
collar back and open the jaws to expose the male
portion of the control cable connector
(i.e. the ball-end on the control cable connector).
Press back the spring-loaded locking pin of
the source assembly connector with a thumb-nail
and engage the male and female portions of
the connectors.
Release the locking pin of the source assembly
connector and check that the connection is secure.
Use the NO GO gauge to check the gap between
the joined connectors during the daily inspection.
2.6
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OPERATING INSTRUCTIONS
STEP 3
Connecting the remote control cable
Close the jaws of the control cable connector
over the joined connectors.
8
Slide the remote control connector assembly collar
over the connector jaws.
NOTE The control cable connector, when properly
installed with the selector ring in the CONNECT
position, displaces anti-rotation lugs which allows
the selector ring to be rotated to the LOCK position
and when required, through to the OPERATE position.
Push and hold the remote control connector
assembly collar flush against the exposure device’s
locking mechanism and rotate the selector ring
from CONNECT to LOCK. The selector ring can
be secured in this position by engaging the
plunger lock.
9
Do not rotate past LOCK.
The remote control cable connector is now secured
into the exposure device's locking mechanism.
Keep the exposure device in the LOCK position
until ready to start the exposure.
Checks before exposure of the source
Verify that the source guide tubes are attached to the outlet port.
Verify that the remote control connector assembly is correctly connected to the exposure
device’s locking mechanism.
Ensure that no personnel are inside the Restricted Area or exposure room.
Ensure that the proper signs are posted and required warnings are in operation.
NOTE
If the remote control is fitted with an additional lock, release this lock and apply a
forward motion to the control crank handle, as if exposing the source, until a resistance
is felt. Release the control crank handle and proceed with the next step.
CAUTION
Do not apply excessive force to the control crank handle in the expose direction as this could
cause the source assembly to move forward out of the stored position when the lock slide
is released. Do not retract the control cable and apply the control crank brake. Leave the
control crank and the control cable in a neutral tension position.
2.7
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OPERATING INSTRUCTIONS
STEP 4
Projecting and retracting the source assembly
Unlocking
If engaged, unlock the exposure device's
plunger lock with the key.
1
Rotate the selector ring to the OPERATE position.
2
3
4
Ensure there is no tension/force in either direction
on the control cable.
Push the lock slide GREEN MARKING laterally
from left to right (as seen behind the projector)
until the lock slide RED MARKING fully appears
on the right side of the selector ring and you
feel or hear the sleeve snap into the slide.
When the GREEN MARKING is visible,
the source assembly is locked into the secured
position within the exposure device.
When the RED MARKING is visible, the source
assembly is free to be projected from, and retracted
to, the projector.
Ensure all personnel leave the immediate area.
Go to the remote control crank.
If an odometer is fitted, adjust the reset knob
to read zero.
The source assembly can now be projected.
2.8
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OPERATING INSTRUCTIONS
STEP 4
Projecting
Rapidly rotate the control crank handle in the EXPOSE direction (counter-clockwise) to move
the source assembly out of the exposure device to the radiographic focal position.
The control crank handle will stop turning when the source reaches the source stop.
Do not use excessive force.
The odometer (if fitted) will indicate the approximate total distance traveled,
7ft (2.1m) for each guide tube section.
Set the brake to ON to prevent movement of the source assembly during the
radiographic exposure.
Start timing the radiographic exposure from the moment the source assembly reaches
the exposure head.
Survey meter readings observed during the projection operation should increase
rapidly from background to a high level as the source emerges from the projector.
Then readings should fall as the source moves out towards the focal point,
fall sharply as the source enters a collimator (if used) and remain steady throughout
the exposure.
Actual survey meter readings will depend on the source activity, distance, collimators
and shielding. The sequence of changes should be observed and the readings noted.
During retraction of the source assembly from the exposure head to the exposure device,
the sequence will reverse. The survey meter should indicate a continually increasing
radiation level as the source assembly is retracted, then drop to background when the
source assembly is stored in the exposure device.
During the radiographic exposure, use the survey meter to check the boundary dose
rate, but spend as little time as possible in and near the restricted area to minimize
personal exposure.
2.9
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OPERATING INSTRUCTIONS
STEP 4
Retracting
At the end of the required exposure time, set the brake to OFF and rapidly turn
the crank handle in the RETRACT (clockwise) direction until it no longer moves.
You may hear the lock slide ‘click’ back into its original position depending on
the ambient noise level at the job site. From the control crank you may be able
to observe the GREEN MARKING on the slide bar.
Apply a slight amount of forward pressure on the crank handle as if to expose
the source to ensure that the positive locking mechanism has actuated.
Allow the crank handle to return to a neutral position, thereby relieving any tension
(force) on the control cable that would cause source movement when unlocking the
projector. At this point, the source cannot be moved out of the stored position.
In the unlikely event the lock slide moves toward the lock position before the source is
fully stored in the exposure device, turn the crank handle in the RETRACT (clockwise)
direction until it stops turning. (The lock slide is designed to lock on the stop ball, not the
control cable). Do not use excessive force. The source assembly will be in the exposure device
but not in the fully shielded position. Approach the exposure device, from the rear, with a
survey meter. The survey meter will measure approximately 40mR/hr (400µSv/hr) at the rear
plate of the exposure device when a 100Ci. (3.7TBq) source is in use.
CAUTION
Remain clear of the front of the exposure device (outlet port side) to minimize personal
exposure. Reset the lock slide to the open position. Return to the control crank and turn the
crank handle in the RETRACT (clockwise) direction and store the source assembly in the
normal manner.
The odometer (if supplied) should read approximately zero when the source assembly has
returned to the projector.
Confirmatory survey
Approach the exposure device while observing the survey meter - observe the
GREEN MARKING on the lock slide and survey the exposure device. The survey meter should
indicate the same radiation level as observed before the exposure. Note particularly the
outlet port reading.
Survey the entire length of source guide tube with the survey meter. If the meter shows a
sharp increase, the source is exposed or incompletely shielded.
If the source is still exposed, attempt to store it properly by cranking the source a short
distance toward the exposure head and retracting it, repeating if necessary.
Locking the exposure device
When the source assembly is properly stored in the projector, rotate the selector ring
from the OPERATE position to the LOCK position and secure it with the plunger lock.
Remove and safeguard key.
WARNING
If after several attempts to return the source assembly, the selector ring cannot be
rotated to the lock position (do not use excessive force) or the lock slide is not
actuated, one must suspect an accident in which the source assembly may have
become disconnected or stuck outside the projector, giving rise to a very high
radiation field. Treat the situation as an EMERGENCY.
2.10
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OPERATING INSTRUCTIONS
STEP 5
Dismantling equipment
Remote control unit
Unlock the exposure device and then rotate the selector ring from LOCK to CONNECT.
The remote control connector will partially disengage from the exposure device's
locking mechanism.
Completely disengage the remote controls from the exposure device by disengaging the
control cable connector from the source assembly connector. Place the protective cover
over the remote control's connecting plug assembly to exclude dirt and protect the control
cable connector from damage. Roll the remote control conduits loosely for easier handling
and transport.
Reinstall the locking mechanism's protective cover, hold in place and rotate the selector
ring to the LOCK position. Push in the plunger lock and remove the key to lock the
exposure device.
Source guide tubes
Remove the source guide tube attached to the exposure device outlet port by:
1 Rotating the spring-loaded outlet cover 60 degrees in a counter-clockwise direction.
2 Grasp the source guide tube fitting and rotate a quarter of a turn in a clockwise direction.
This action will allow removal of the source guide tube from the outlet port.
3 Simultaneously pull and rotate the spring-loaded outlet port cover a quarter of a turn in a
counter-clockwise direction.
Place the protective covers on the fittings of each source guide tube used to exclude dirt and
protect the swaged fittings. Source guide tubes should be rolled up loosely for easier
handling and transport.
Surveying
After installing the locking mechanism’s protective cover and the outlet port cover, survey
the entire circumference of the exposure device with the survey meter to ensure the source
is fully shielded and properly secured. The survey should not measure more than 200mR/hr
(2mSv/hr) on any surface of the exposure device and should indicate the same measurement
as the initial survey.
Storage
Lock the exposure device and secure it in a clean dry storage area where it cannot
be tampered with or removed by unauthorized personnel. Perform a storage survey
on the surface of the exposure device to verify the dose rate is less than 200mR/hr
(2mSv/hr) and record.
A radioactive material warning notice must be posted on the door or entrance of
the storage area. The door or entrance must be locked to prevent access by
unauthorized personnel.
2.11
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DAILY INSPECTION INSTRUCTIONS
Introduction
The AEA Technology QSA, Inc. Model 880 Delta, Sigma and Elite radiographic exposure
devices provide innovation to the most widely used family of radiographic exposure devices
utilized for on-site gamma radiography. The Model 880 series exposure devices are portable,
lightweight and permit use of several different isotopes commonly needed by the
nondestructive testing community.
The Model 880 is primarily designed for use with Iridium-192 sources for radiographic
inspection of steel and light alloys. Due to the advancements in radiographic inspection
techniques, additional source assemblies for the Model 880 are available with Selenium-75,
Ytterbium-169 and Cobalt-60. The use of these isotopes increases the capabilities of gamma
inspection techniques of specific materials by using a wider range of radiation energies to
achieve required inspection sensitivity.
The tubular stainless steel case of welded construction contains a cast radiation shield of
depleted uranium. One end of the exposure device houses a locking mechanism mounted
to the back plate from which the source assembly connector is accessible during usage.
The opposite end of the exposure device houses an outlet port mechanism which is
mounted to the front plate. The outlet port mechanism allows attachment of source guide
tube (projection sheath) without an elevation of radiation levels.
The Model 880 Delta may be used with suitable source assemblies up to a maximum activity
for the following listed isotopes:
Iridium-192:
Ytterbium-169: 20Ci
Selenium-75:
Cobalt-60:
150Ci
(5.55TBq)
(0.74TBq)
(2.96TBq)
(2.4GBq)
80Ci
0.065Ci
The Model 880 Sigma may be used with suitable source assemblies up to a maximum
activity for the following listed isotopes:
Iridium-192:
Ytterbium-169: 20Ci
Selenium-75:
Cobalt-60:
130Ci
(4.81TBq)
(0.74TBq)
(2.96TBq)
(925MBq)
80Ci
0.025Ci
The Model 880 Elite may be used with suitable source assemblies up to a maximum activity
for the following listed isotopes:
Iridium-192:
Ytterbium-169: 20Ci
Selenium-75:
Cobalt-60:
50Ci
(1.85TBq)
(0.74TBq)
(2.96TBq)
(925MBq)
80Ci
0.025Ci
A range of remote control units, source guide tubes (projection sheaths), collimators
(beam limiters), service replacement units and accessories are available for these systems.
3.1
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DAILY INSPECTION INSTRUCTIONS
Operational features
1 Source assembly
A sealed source containing the radioactive material is swaged (crimped) to one end of a
flexible steel leader, commonly referred to as the source holder or pigtail. A steel stop-ball
and a steel connector are swaged to the opposite end of the source holder. The stop-ball
provides the means to secure the source assembly within the exposure device's locking
mechanism. The source assembly connector provides the means to attach the control cable
connector to enable remote projection and retraction of the source assembly. The source
assembly connector and projector locking mechanism are designed so that the sealed source
cannot be projected from the exposure device unless it has been properly coupled to the
control cable connector and the remote control. (See figure 3.1)
DANGER - IMPORTANT WARNING
The source assembly while in an unshielded position and the sealed source
containing the radioactive material must NOT be handled under any circumstances.
The unshielded source at close proximity can cause serious injury, sickness or death
to anyone exposed to it even for a short duration.
All specific model number source assemblies used in the Model 880 are designed and tested
for use in accordance to ISO/ANSI and USNRC requirements.
2 Exposure device
The source assembly is shown in the stored position in a titanium ‘S’ tube at the center
of the depleted Uranium shield of the exposure device. (See figure 3.2)
A remote control unit is shown with its control cable connector coupled to the
source assembly.
High density depleted Uranium shielding is used in the exposure device to provide good
radiological protection with minimal weight.
Sealed source
Flexible leader
Stop ball
Control cable
Source assembly
connector
Control cable
connector
Figure 3.1 Source assembly and remote control cable connectors
3.2
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DAILY INSPECTION INSTRUCTIONS
A shielded outlet port cover mechanism permits a secure attachment of source guide tubes
(projection sheaths) without an elevation of radiation levels. The outlet port mechanism will
not allow the source assembly to be projected outside of the exposure device unless a
source guide tube has been properly attached to the outlet port. A three-step connection is
accomplished by completion of the following steps:
1 Pull and rotate the spring-loaded outlet port cover a quarter turn (from a 12 o'clock to a
3 o'clock position) in a clockwise direction. This action moves the protective cover away from
the outlet port to permit attachment of a source guide tube.
2 A bayonet-style fitting of the source guide tube is inserted into the outlet port and
rotated a quarter turn (from a 12 o'clock position to a 9 o'clock position) counter-clockwise.
A complete insertion and counter-clockwise rotation of the source guide tube fitting releases
the lock on an internal shielding rotor of the outlet port.
3 Rotate the spring-loaded cover an additional 60 degrees (from a 3 o'clock position to a
five o'clock position) in a clockwise direction until it stops. This last movement moves the
outlet port shield out of position and aligns a pass-through opening on the rotor with the
‘S’ tube and outlet port while simultaneously securing the source guide tube fitting to the
outlet port.
The design permits attachment of the source guide tubes without an elevation of radiation
intensity at the outlet port, minimizing the radiation exposure to the radiographer's hands.
The sealed source assembly cannot be exposed out of the exposure device unless a positive
connection of the source guide to the device has been accomplished.
The exposure device's locking mechanism provides three main safety features for the
radiographer during radiographic operations.
First, the locking mechanism requires a deliberate action to enable exposure of the source
assembly. This is accomplished by coupling the control cable connector to the source
assembly connector, coupling the remote control connector to the exposure device locking
mechanism and then pushing a lock slide from the SECURED position into the EXPOSE
position. The lock slide must be manually pushed into the EXPOSE position prior to each
radiographic exposure to enable operation of the remote control.
Source assembly
Sealed source
Control cable
Exposure device
Remote
Locking
Shield
Outlet port
Source
control crank
mechanism
guide tubes
Figure 3.2 Source assembly in fully shielded position of radiographic exposure device
3.3
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DAILY INSPECTION INSTRUCTIONS
Second, during termination of a radiographic exposure, the remote controls are used to
retract the source back into the exposure device. When the source assembly is returned to
the fully shielded position within the exposure device, the locking mechanism automatically
secures the source assembly, preventing the source assembly from being inadvertently
exposed from the fully shielded position. The automatic securing mechanism allows
movement of the exposure device with the remote controls attached at the job site while
preventing inadvertent exposure of the source assembly.
For the third feature, the controls cannot be removed from the exposure device locking
mechanism unless the source assembly has been returned to the fully shielded position
within the exposure device.
The complete radiography system consists of the radiographic exposure device containing
the source assembly, the remote controls, source guide tubes and collimators (beam limiters)
whenever possible.
The use of multiple source guide tubes must be a combined length shorter than the length
of the remote controls, e.g. if the remote controls are 25ft (7.6m) long, only 3 source guide
tubes can be utilized for a combined length of 21ft (6.4m). This consideration ensures the
source assembly will be fully projected to the source stop (exposure head).
The source assembly must never be projected until the equipment is properly connected and
all personnel have left the restricted area.
Transit mode
Rotating the handle of the remote control crank in the EXPOSE direction (counter-clockwise)
moves the source assembly out of the shielded position in the exposure device and into the
source guide tubes (projection sheaths). (See figure 3.3)
The source assembly is under positive mechanical control using the remote control crank.
The remote controls that are fitted with an odometer to provide an indication of the sealed
source’s position. The odometer reading should never be a substitute for the requirement
and proper use of a radiation survey meter.
Source assembly
Sealed source
Control cable
Exposure device
Remote
Locking
Shield
Outlet port
Source
control crank
mechanism
guide tubes
Figure 3.3 Sealed source in transit mode
3.4
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DAILY INSPECTION INSTRUCTIONS
Exposure mode
When the source assembly reaches the exposure head at the radiographic working position,
the odometer will indicate (in feet and tenths of a foot) the approximate distance the sealed
source has traveled. (See figure 3.4)
To return the source assembly to the exposure device the crank handle is rotated in the
RETRACT direction (clockwise). When the source assembly is returned to the fully shielded
position within the exposure device, the locking mechanism automatically secures the source
assembly. The automatic securing mechanism will not permit exposure of the source
assembly unless the radiographer pushes the lock slide into the expose position.
The remote controls cannot be disconnected from the source assembly unless the source
assembly is fully retracted into the shielded position in the exposure device.
The system is designed for safe and reliable operation provided the system is properly used
and maintained.
Source assembly
Sealed source
Control cable
Exposure device
Remote
Locking
Shield
Outlet port
Source
control crank
mechanism
guide tubes
Figure 3.4 Sealed source in the exposure mode
3.5
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DAILY INSPECTION INSTRUCTIONS
Daily inspection of the system
A daily inspection of the gamma radiography system for obvious defects is essential.
The daily inspection ensures that the equipment is in a safe and proper operating condition.
It is important that all radiographers perform or supervise this inspection prior to the first
radiographic exposure of the shift regardless of any previous inspections that may have been
performed that day. As an example, damage to a component of the system may occur
during transport of the equipment to the job-site. If damaged equipment were used without
detection, the result may be the inability to retract the source assembly into the exposure
device and secure it.
The results of a daily inspection should be recorded and include the date, the name of the
inspector and what specific equipment was inspected. If any defective or damaged
components are discovered during the daily inspection, the component must be removed
from service and identified with a status indicator (tag, label, or tape) to prevent inadvertent
use by other radiography personnel. Defective or damaged components must be repaired or
replaced before reuse in radiographic operations. The three main components of the
radiography system consisting of the radiographic exposure device, remote controls and
source guide tubes must be inspected in addition to accessories such as lab stands,
collimators, J-tubes, magnetic lab-stands and pipe-clamping apparatus.
Radiographers must take a proactive role in preventing incidents, by performing or
directly supervising a simple, but thorough daily inspection of the radiography system.
The implications that affect safety and the importance of the daily inspection must be
emphasized and understood by the entire radiography staff.
Daily inspection of the exposure device
1 Survey the surface of the exposure device to ensure the radiation level is less than
200mR/hr (2mSv/hr), even when containing a source assembly with the maximum allowable
activity. This survey provides a function check of the survey instrument, that it is responding
to radiation, in addition to providing the radiographer with a reference measurement that
can be compared to confirmatory surveys after terminating each radiographic exposure.
2 Inspect the labels on the exposure device to ensure they are legible and securely attached
to the exposure device. The warning label containing the trefoil should be legible from a
distance of at least 3ft (approximately 1m). This label warns the individuals in the immediate
vicinity of the presence of radioactive materials and permits them to take measures to
minimize their exposure to radiation. The printed verbiage and the radiation symbol must be
legible. The trefoil symbol becomes the warning for those individuals who cannot read or
understand the written warning, ‘Caution or Danger, Radioactive Material’. Inspect the
legibility and attachment of the source identification tag that describes the radioactive
source contained within the exposure device.
3 Inspect the exposure device’s locking mechanism to ensure the protective cover is
installed over the source assembly connector. Inspect the plunger lock to ensure the lock will
engage when the plunger is depressed and the key is removed. Grasp the entire locking
mechanism with one hand and try to move the lock to determine that the screws have not
loosened due to vibration. Unlock the plunger lock and remove the protective cover. Push
the protective cover into plunger lock housing for storage during use of the device.
4 Inspect the outlet port for damage and for smooth operation by operating the
outlet port cover.
Daily inspection of the source guide tube(s)
1 Remove the protective covers from the swaged fittings on the source guide tubes.
Inspect both swage fittings to ensure the threads are not stripped or clogged with dirt,
grease or sludge. Inspect the ears on the bayonet fitting to ensure they are not bent,
broken or excessively worn.
3.6
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DAILY INSPECTION INSTRUCTIONS
2 Inspect each length of source guide tube that will be used for cuts, inward dents and
heat damage. The inspection is primarily a visual one, but it should include the radiographer
using his hands to feel for the inward dents. This is necessary due to the fact the outer
material of the source guide tube is a flexible waterproof material that can mask dents.
During a visual-only inspection, a dent in the source guide tube may retain a circular
appearance on the exterior, while having an inward dent in the metallic conduit directly
below the waterproof material. This type of masked dent can be felt by the radiographer's
hands. Dents in the source guide tubes are the major cause of source hang-ups.
3 Inspect the attachment of the collimator to the source stop (exposure head) if used
during radiography.
Daily inspection of the remote controls
The remote control consists of a control crank, a control cable with a connector swaged at
one end, two control cable conduits and a connector plug assembly.
The control crank contains a diagonally cut, geared drive wheel that matches the outer
helical winding of the control cable. This worm-gear arrangement of the control crank drive
wheel and the control cable provides the radiographer with a reliable means to project and
retract the source assembly from and to the exposure device. The control crank is equipped
with a lever brake that retains the source assembly while in the exposure head. Beneath the
control crank is a label that indicates the direction for EXPOSE and RETRACT during use in
addition to ON and OFF positions for the brake. Control cranks are available with an
odometer to provide the radiographer with the approximate travel distance of the source
assembly. The travel distance is indicated in increments of feet and tenths of a foot.
Radiographers can count the number of rotations of the crank handle when using control
cranks that are not equipped with odometers to obtain an approximation of the travel distance.
One full revolution of the crank handle is equal to approximately 10in (25.4cm) of travel.
Two remote control conduits (sheaths, housings) are attached to the control crank.
One conduit contains the working side of the control cable that drives the source assembly
out of the exposure device and through the source guide tubes. The second conduit is the
reserve conduit containing the length of the control cable necessary for projection of the
source assembly. The remote control conduits provide a degree of protection of the control
cable against the elements common to the working environments that industrial
radiography is performed.
Attached to the opposite end of the remote control conduits is a connecting plug assembly
that is used for attachment of the remote controls to the locking mechanism of the
exposure device. The connecting plug assembly and the control cable connector are
designed with minimal tolerances. A connection of the source assembly connector to the
control cable connector must be completed before the remote control connecting plug
assembly can be attached to the locking mechanism of the exposure device. A protective
end-cover must be installed after use of the remote controls. The protective cover provides
protection to the connecting plug assembly and the control cable connector and prevents
the ingress of water, mud, sand or other foreign matter.
The control cable (drive cable) is a flexible, carbon steel cable with an outer helical winding.
The length of control cable is approximately twice the length of the remote controls.
Attached to one end of the control cable is a male connector. The control cable when used
in conjunction with the remote control as a system provides a positive mechanical control of
the source assembly at a distance. The control cable is a critical link for safe operation and is
the radiographer's only means of control over the source assembly. Therefore, the control
cable's storage, use, daily inspection and quarterly maintenance are critical elements to the
prevention of a control cable failure. In almost all cases, repairs for a control cable are not
possible, with the exception of replacing the control cable's Model 550 male connector every
five years. Damaged or defective control cables must not be used and removed from service.
3.7
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DAILY INSPECTION INSTRUCTIONS
1 Remote control inspection: Uncoil the remote controls at the site. Inspect the control
crank to assure all screws are present and tightened and that the crank handle is properly
secured. If the control crank is equipped with an odometer, zero the odometer while the
control cable is fully retracted. Verify the odometer is fully functional.
Ensure the instructions on the control crank's label are legible. These instructions are
important to safety, especially when assistants are being trained or during an emergency.
Without the instructions it is conceivable a radiographer could become confused as to which
direction the crank handle must be turned to retract or expose the source.
Ensure the brake is operational. Resistance should be felt while rotating the crank handle
with the brake in the ON position. Inspect the control conduit fittings to verify they are
secured to the control crank.
2 Control conduit inspection: Inspect the control conduit where it is swaged onto the
fittings that mount on the control crank. There should be no evidence of cracks or breaks in
the yellow PVC sheath. Also, look for bulges in that area that result from repeated flexing.
Visually inspect the entire length of both control conduits looking for dents, cuts and
thermally damaged areas. During this inspection, the radiographer should use his hands to
feel for inward dents. Cuts and melted areas found on the control conduits should be sealed
with PVC tape to prevent against the ingress of water.
Inspect the control conduits where they are swaged to the swage fittings that are mounted
to the connecting plug assembly. There should be no evidence of cracks, breaks or bulges in
the yellow PVC sheath.
Remove the protective cover from the connecting plug assembly. Inspect the connecting
plug assembly to verify the movable jaws are not excessively loose and the connector collar
pins are not excessively loose or bent. Check the control sheath swage fittings to verify they
are not loose where they are joined to the connecting plug assembly.
3 Control cable inspection: Inspect the control cable connector as it protrudes out of the
connecting plug assembly. The control cable connector should not be bent or at an angle
exceeding 15 degrees relative to the control cable centerline. If a control cable connector
is repeatedly bent at an angle greater than 15 degrees, damage to the control cable may
be introduced by straightening the bend. Inspect the control cable (male) connector to
verify that the stem and ball of the connector is not bent or cracked. Using hand pressure,
attempt to twist the control cable connector from the control cable. If the control cable
connector can be twisted using hand pressure or appears bent or cracked, remove from
service and label as defective.
Pull approximately 12in (30.5cm) of control cable out of the connecting plug assembly and
inspect for the following anomalies directly behind the connector:
G
Cuts, breaks, nicks or fraying of the spiral windings of the control cable.
Areas with kinks or permanent bends.
Rust (a red oxide) on the inner core of the control cable.
Uniformity of the spacing between the outer spiral windings. Also check for flattened
G
G
G
areas and wear.
G
Bend the connector section of control cable back towards itself and release the cable
to test for flexibility or ‘spring’ of the control cable. A cable that has been subjected to
the flexibility test and remains in the bent position after the test provides an indication
of internal corrosion and must be removed from service.
G
Verify that a light coating of mil-spec grease is present on the control cable. The light
coating of grease is necessary to prevent the penetration of water and chemicals that
can oxidize and permanently damage the control cable.
3.8
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DAILY INSPECTION INSTRUCTIONS
Check for freedom of movement of the control cable within the remote controls by moving
the control crank handle back and forth approximately one-quarter turn. During this test,
take care to avoid cranking the control cable onto the ground exposing it to dirt and sand.
If any resistance is felt during this check, re-inspect the control conduits for dents or
depressions. If dents are not present on the remote control conduits, the control cable may
be rusted stiff somewhere within the control conduits. Do not use remote controls that do
not function properly or exhibit defects described above.
A final check of the control cable connector and source assembly connector is accomplished
by use of a Model 550 NO GO gauge to check for significant wear on the connectors that
would affect safety. Without using excessive force, check the following four positions:
1 The ball at the end of the control cable connector must NOT GO into the hole of
the gauge.
2 The shank or stem of the control cable connector must NOT GO into the smaller of
the two notches located on the side of the gauge.
3 The width of the gauge must NOT GO into the female slot of the source
assembly connector.
4 After a positive connection between the control cable and source assembly connectors
has been accomplished, verify that the larger notch located on the side of the gauge will
NOT GO in the gap between the joined connectors.
Replace any components that fail any of the NO GO gauge tests, because a
failure indicates significant wear that could allow safety features of the design to
be defeated.
IMPORTANT REMINDER
Do not compromise on safety. Always perform a daily inspection of the exposure
device, projection sheaths and remote controls prior to use.
Defective equipment that is discovered during the daily inspection must be removed
from service until repaired or replaced.
Ball diameter 1
2 Ball shank
Connector 4
gap width
3 Female slot width
3.9
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MAINTENANCE INSTRUCTIONS
QCP386 issue 2
Quarterly (routine) and annual (complete) maintenance requirements
Radiographic exposure devices and associated equipment must be maintained regularly by
trained and qualified personnel to ensure consistent and safe operation of the radiographic
system. The routine inspection and maintenance also ensures the integrity of the Type B(U)
transport packages are maintained in compliance with the Type B(U) package, Certification
Number USA/9296/B(U)-XX (for XX, enter either 85 or 96 according to the package certification).
Manufacturers base the recommended inspection and maintenance requirements on the
system's design, application, materials, anticipated work cycles, environmental factors of use
under the normal and abnormal conditions of industrial radiography and while in the
transport system. A program of systematic maintenance will prolong the working life of the
radiographic exposure device and associated equipment in addition to ensuring safety
during use. By most national regulations, routine maintenance of the systems is required at
intervals not to exceed 3 months in addition to the radiographer's daily inspections for
obvious defects. The complete annual servicing ensures the integrity of the system.
Maintenance program administrators must recognize the need for maintenance intervals
that are less than the required 3 month interval especially in cases where the systems are
used in severe environmental conditions. Maintenance program administrators must ensure
the systems are completely serviced immediately after certain jobs in severe conditions.
Extreme or severe conditions may include, but is not limited to:
G
Conditions where the equipment was immersed in water or mud.
Subjected to high-concentrations of particulate such as fly ash or sand.
Subjected to hot radiography conditions.
Subjected to salt-water conditions, caustic or acidic materials.
Subjected to accidental drops or falling objects.
Whenever subjected to extreme environmental conditions.
G
G
G
G
G
The routine maintenance performed every 3 months requires partial disassembly, cleaning,
inspection, re-lubrication and operational checks of the system. The complete maintenance
(performed once a year) involves a complete disassembly, cleaning, inspection, re-lubrication
and operational tests of the entire system.
Equipment maintenance can be performed by trained and qualified individuals within the
licensee's organization. AEA Technology QSA service engineers are available to provide
maintenance on the systems at the licensee's premises or at one of the service centers.
Routine (quarterly) maintenance requirements
1 Remote controls
Disassemble, clean, inspect and maintain the remote control crank, control conduits and
control cable according to the complete service section. Record the results of the inspection
and any repairs that are performed. Any components found to be deficient during the
inspection must be removed from service until repaired or replaced. Deficient components
must be labeled with a status indicator to prevent inadvertent use.
2 Source guide tubes
Clean and inspect the source guide tubes in accordance to the complete service section.
Record the results of the inspection and any repairs that are performed. All source guide
tubes found to be deficient during this inspection must be removed from service and
sent to a service center for repairs. Deficient components must be tagged with a status
indicator to prevent inadvertent use.
3 Radiographic exposure device
Clean and inspect the exposure device for wear and obvious damage. Record any defects
that might affect safe operation of the exposure device. If deficiencies are found during this
4.1
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MAINTENANCE INSTRUCTIONS
maintenance, the exposure device must be withdrawn from service until repairs are
accomplished and the results of subsequent operational tests and inspection are satisfactory.
Inspect the radiography system for the following using a ‘satisfactory’ or ‘deficient’ criteria:
1 Survey the surface of the exposure device to ensure the measurable dose/rate is less than
200mR/hr (2mSv/hr). Remove the device from service if the dose/rate exceeds this limit.
Contact AEA Technology QSA for guidance.
2 Ensure the metal identification tag for the radioisotope is legible and securely fastened to
the exposure device. Do not cover the tag with any other labels.
3 Ensure the label containing the device model number, serial number, Type B certification
number and the trefoil with the warning ‘Caution or Danger, Radioactive Material’ is legible
from a distance of 3ft (approximately 1m) and securely fastened to the exposure device.
Do not cover the required warnings with any other labels. Ensure the labels applied for
transportation are legible.
4 Check the welded stainless steel end plates of the exposure device for weld failure
(cracks, etc.) behind the back plate (locking mechanism) or the front plate (outlet port).
Ensure the handle, the bottom contact surfaces and the sides comprising the plastic jacket
of the exposure device are intact. Check the bottom contact surfaces of the jacket to ensure
the contact area is not excessively worn allowing contact of the stainless steel body with
the work surface. If any deficiencies are found during this inspection, repairs can be
accomplished at an AEA Technology QSA service center.
5 Check the outlet port for proper function by attaching and removing a source guide tube.
The operation should be smooth and resistance free. If there is any resistance or ‘crunchy’
feeling noticed during attachment or removal of the source guide tube or during movement
of the outlet port cover, this indicates excessive amounts of sand or dirt within the
mechanism. The outlet port mechanism must be removed, cleaned and lubricated according
to the complete service instructions.
6 Check the locking mechanism and plunger lock to verify attachment and operation.
Grasp the entire mechanism with one hand and attempt to shift the mechanism.
Retaining screws that have been loosened from excessive vibration or improper maintenance
will allow the movement of the locking mechanism during this check. Loose screws must be
tightened according to the annual maintenance requirements prior to use or transport.
7 Use the Model 550 NO GO gauge to check for wear on the remote control cable
connector and the source assembly connector. Replace components that fail any of
these tests.
8 Operationally check the locking mechanism and then the function of the entire system
during the first radiographic exposure of the work shift while within a restricted area.
Operation of the radiographic system verifies both the locking mechanism and entire system
operates smoothly and freely. If operation is faulty, remove the exposure device from service
and perform the complete annual maintenance.
Routine (quarterly) maintenance records
Records of all equipment inspected and maintained during the routine maintenance must be
recorded. Records should indicate:
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The date of inspection and maintenance.
Name of the qualified individual performing the required inspections.
Problems found and maintenance or repairs performed.
Model number and serial number of the exposure device.
Associated equipment that was inspected and maintained.
Part numbers and associated lot numbers or serial numbers of replacement
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parts installed.
4.2
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MAINTENANCE INSTRUCTIONS
Annual maintenance requirements
Radiographic exposure devices used under normal environmental conditions should only
require complete maintenance once a year. Complete maintenance on the associated
equipment including the remote controls and source guide tubes should be performed every
three months to detect deficiencies and to prevent corrosion and wear related problems.
The complete maintenance of the exposure device requires the disassembly of the exposure
device to enable a detailed inspection of all major components. Therefore, the inspection
and maintenance requires transfer of the source assembly from the exposure device into
a source changer performed inside of a restricted area. The annual inspection and
maintenance must be performed by individuals specifically trained, qualified and
authorized for this work.
Perform the following steps to transfer the sealed source from the exposure device into a
source changer:
1 Perform a survey of the exposure device to ensure measurable dose rates are less than
200mR/hr (2mSv/hr) when loaded to maximum capacity. Perform a radiation survey and an
inspection of the source changer to be used according to the source changer's operating
instructions manual.
2 Perform a daily inspection of the remote controls, source guide tube(s) and exposure
device according to the daily inspection section of this manual. If the source assembly
connector fails the NO GO gauge test, do not proceed with transfer of the source assembly.
Contact an AEA Technology QSA service center for advice on disposal of the source assembly.
Use the Model 550 NO GO gauge to check the remote control cable connector before and
after a connection to the source assembly connector. For complete instructions to use the
NO GO gauge and points tested, review the daily inspection instructions. (See page 3.8)
Do not use remote controls that do not meet the inspection criteria described in the
daily inspection.
3 Set up the equipment within a restricted area before transferring the source assembly
into the source changer according to the instructions supplied with the source changer.
The transfer must be performed by properly trained and licensed personnel. Use a survey
meter to perform confirmatory surveys of the exposure device, source guide tube and
source changer to confirm that the sealed source is properly secured. Engage the lock
on the source changer to lock the sealed source within the source changer.
Remove the source identification tag from the exposure device and fasten it to the
source changer.
Attach a Model 550 connector gauge (jumper) to the end of the remote control cable
connector found inside of the protective cover of the locking mechanism. The jumper will
allow removal of the remote controls from the locking mechanism of the device after the
remote control cable connector is returned to the exposure device lock.
Leak testing
Leak test of the radioactive sealed source
Periodic leak tests of the radioactive sealed source are required by most national regulations.
The leak test provides a confirmation of the integrity of the hermetically welded sealed
source by determining the amount of removable contamination. In most regulatory
jurisdictions, a leak test of a sealed source must be performed every 6 months or prior to
its first use after removal from storage. Acceptable results of a radio-assay must indicate
removable contamination is less than 0.005µCi (< 185Bq). To perform a wipe of the
radioactive sealed source, perform the following steps:
1 Survey the exterior surface of the Model 880 exposure device to ensure the dose/rates are
less than 200mR/hr (2mSv/hr).
4.3
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MAINTENANCE INSTRUCTIONS
2 Prepare a Model 518 wipe test swab according to the instruction sheet. Fill in all required
information for the on the leak test form. Omission of the isotope, source model and serial
number, etc. will delay processing of the wipe test.
3 Install service bayonet fitting (part no. 88049) into the outlet port and rotate the cover to
allow the wipe test wand to enter the ‘S’ tube.
4 Fully insert the wipe test wand into the ‘S’ tube and move back and forth to obtain
the sample.
5 Carefully withdraw the wipe test swab from the outlet port while observing the survey
instrument. Withdraw the plastic bag over the wipe test wand without touching.
Always assume the sample is contaminated.
6 Remove the service bayonet fitting from the outlet port and rotate the outlet port cover
into the closed position.
7 In a low background (no radiation) area, switch the survey meter to the lowest scale and
obtain a background measurement. Leaving the survey meter stationary, move the plastic
wrapped swab towards the survey meter's detector to determine if a gross quantity of
contamination is on the wipe test. If the survey meter measures greater 0.1mR/hr (1µSv/hr),
contact AEA Technology QSA for instructions. If there is no measurable increase above
background, the sample may be sent to a laboratory for radio-assay. The laboratory will send
a leak test certificate after performing the radio-assay. Retain this certificate in your records.
In the event you are informed by the radio-assay laboratory that your leak test results
indicate greater than 0.005µCi (> 185Bq), you must immediately remove from service the
radioactive sealed source, the exposure device and all remote controls, source guide tubes,
collimators, lab stands, etc. that were used in conjunction with that sealed source. You must
cause the equipment to be repaired or decontaminated and notify the regulatory agency
(USA) within 5 days. Contact the sealed source manufacturer for assistance.
Leak test for depleted Uranium (DU)
Some regulatory jurisdictions require periodic leak tests every twelve months of all
projection-type exposure devices that utilize DU for shielding. The purpose of the leak test is
to detect the long-term wear through of the device's source tube that may consequently
expose the DU shielding. A wipe-test wand that is both flexible and long enough to reach a
bend radius or a wear point is required to perform a leak test. The wand enables direct
contact with the DU where the device's source tube has worn through. A direct wipe of the
DU is required due to the low specific activity of depleted uranium. The wipe test for DU is
obtained in the same fashion as a leak test of a sealed source utilizing the same radiation
safety procedures. Straight-through source tube may require transferring the source
assembly into a source changer to safely accomplish the DU wipe test.
The analysis performed on the wipe test must be capable of detecting the presence of
0.005µCi (185Bq) of radioactive material on the test sample. If the test sample reveals
0.005µCi (185Bq) or more of removable DU contamination, the exposure device must be
removed from service until an evaluation of the wear on the ‘S’ tube has been made. Should
the evaluation reveal that the source tube is worn through, the exposure device may not be
used again.
DU shielded devices do not have to be tested for DU contamination while in storage and
not in use. Before using or transferring a device that has been in storage for more than
12 months, the exposure device must be leak tested for DU contamination prior to use or
transfer. Please contact AEA Technology QSA if you require leak test kits, radio-assay services
or assistance in the disposal of worn through exposure devices.
4.4
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MAINTENANCE INSTRUCTIONS
Annual maintenance for the Model 880 Delta, Model 880 Sigma
and Model 880 Elite exposure devices
Tools required for Model 880 complete maintenance
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32in Allen wrench for the 10-32 socket head lock mount and selector-ring screws.
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32in Allen wrench for the socket head plunger lock screw.
Number 30 drill bit and pop-rivet gun for removal and installation of 1 8in s/s rivets.
Tamperproof tool bit for back plate and front plate 16in-18 screws.
Calibrated torque wrench (in/lb) for locking mechanism's socket head screws.
Small slot screwdriver for source identification tag 6-32 screws.
U-tool (part no. SK1761) for functional checks of locking mechanism.
Model A424-9 XL mock source assembly and short length control cable for
operational tests after servicing.
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Materials required for Model 880 complete maintenance
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Mil-Spec grease MIL-G-23827B or C, MIL-PRF-23827C
(or equivalent radiation resistant grease).
Temporary Locktite™ or Vibratite™ thread sealant.
Recommended solvents for cleaning and degreasing operations: clean mineral spirits.
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(Follow manufacturers safety precautions for use, handling, storage and disposal.)
Clean lint-free rags.
12-gauge gun patches or any lint-free cloth for cleaning the ‘S’ tube.
Large pan for use in cleaning and degreasing the remote control cable and
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mechanical parts.
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Stainless steel, brass or synthetic bristle brush to be used during degreasing and
cleaning of parts.
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Light viscosity oil, such as 3-in-1™ oil to lubricate plunger lock.
Model 880 label and 4 x 1 8in stainless steel rivets.
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Permantex™ anti-seize thread lubricant.
Lock mount, rubber sleeves - 4 x part number SLV005.
Replacement springs for the locking mechanism -
1 x compression spring part number SPR006,
1 x compression spring part number SPR005,
2 x compression springs part number SPR004.
Replacement springs for the outlet port -
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2 x compression springs part number SPR033.
Bayonet-type source guide tube for operational tests of the outlet port.
4.5
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MAINTENANCE INSTRUCTIONS
Model 880 Delta, Model 880 Sigma and Model 880 Elite
annual maintenance requirements
Model 880 Delta, Sigma and Elite exposure devices must receive inspection and maintenance
at least once a year.
The locking mechanism and outlet port mechanism must be removed from the exposure
device and disassembled for proper cleaning, inspection and lubrication on components that
are critical to safety.
These procedures can only be performed on an empty exposure device, which requires
transfer of the radioactive source assembly into an approved storage container.
The inspection and maintenance procedures must be performed by personnel specifically
trained and qualified for this work. AEA Technology QSA service engineers will service these
systems at one of their service centers or in the field upon request.
Trained and qualified personnel who wish to perform this work should use the
following procedure:
1 Perform a daily inspection of the system and transfer the radioactive source assembly
into an approved storage container. Disengage remote controls and source guide tubes.
The exposure device must be empty for the following steps. (See page 4.3)
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2 Remove the four
-18 x 1 2in socket button-head screws that retain the locking
mechanism plate from the empty Model 880 device using the tamperproof tool bit mounted
in a ratchet.
3 Remove the 10-32 socket head screws that retain the selector-ring and plunger lock
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housing from the mounting plate using a 32in Allen wrench.
4 Disassemble the locking mechanism assembly, taking care not to lose the spring loaded
parts. Place the disassembled locking mechanism components into a pan filled with fresh,
clean solvent. Clean all parts using a brush to dislodge any dirt or grease. Remove cleaned
parts from the solvent bath, dry and place on a clean surface. Inspect all parts for wear.
Replace worn parts as necessary.
Discard all used locking mechanism springs and replace with new springs.
When ordering spare parts, quote the model and serial number of the exposure device as
well as the part number to ensure correct replacement.
Remove the lock retainer from the mounting plate by unscrewing the two 10-32 x 1 2in
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socket head screws using a 32in Allen wrench. Remove the plunger lock from the lock
retainer by removing the cap screw using a 32in Allen wrench. Clean the lock plunger,
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lock retainer and springs in a solvent bath. Ensure the lock plunger is thoroughly rinsed to
remove all dust from the key tumblers. Removed the cleaned parts from the solvent bath
and dry thoroughly, using compressed air to dry the lock tumbler. Inspect all parts for wear.
Replace worn parts as necessary. Lubricate the plunger lock barrel and tumbler using two
drops of a light viscosity oil. Apply Vibratite™ thread sealant to the lock set screw and install.
Check the plunger lock for proper function by using the key to engage and unlock. Apply
Vibratite™ to the lock retainer's 10-32 x 1 2in screws, then mount the lock retainer to the
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locking mechanism plate. Hand-tighten the screws using a 32in Allen wrench.
Apply a light coating of lubrication to the inside surfaces of the selector ring and selector
body using MIL-G-23827B or C, MIL-PRF-23827C grease or equivalent radiation resistant
grease. Do not lubricate the lock slide and sleeve. Note that some types of greases may
undergo chemical changes and form tars when exposed to radiation.
4.6
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MAINTENANCE INSTRUCTIONS
5 Begin assembly of the locking mechanism by lightly coating all components with
MIL-G-23827B or C, MIL-PRF-23827C grease. Treat all screw thread ends with Vibratite™ or
Locktite™ thread sealant.
Mount the locking mechanism plate horizontally in a vise or fixture with the plunger lock
and retainer at a 12 o'clock position. (Note: carefully mount the locking mechanism plate in
a vise or fixture so hands are free for the assembly procedure and no damage to the mount
plate will occur.)
The narrow end of the lock slide slot must be located at the 3 o'clock position. Locate the
lock slide and return spring into the mating slot of the selector body.
Place the selector ring with the word CONNECT at the 12 o'clock position, over the selector
body. Push the lock slide inward during placement of the selector ring for clearance.
Doing so will allow the selector ring to rest flush on the selector body. Insert the anti-
rotation lug springs at the top and bottom of the selector body. Place the anti-rotation
lugs over the springs.
Place the tungsten sleeve with the large diameter facing downward, on the center of the
lock slide. Place the compression spring over the sleeve.
Install the selector ring retainer into the selector ring. Verify that the three non-threaded
holes line up under the word CONNECT located on the selector ring. Depress the selector
ring retainer into the selector ring until it is flush with the top of the selector ring. Hold
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the selector ring retainer firmly against the mounting plate until the 10-32 x 1 4in screws
are installed.
While firmly holding the locking mechanism against the mounting plate, turn the plate over
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to expose the back side of the mounting plate. Install the four 10-32 x 1 4in socket head
screws to secure the mechanism to the mounting plate. Torque the socket head screws to
30in/lb (3.39Nm) + or - 5in/lb (0.57Nm) using a calibrated torque wrench.
6 Perform functional safety testing of the locking mechanism by the following:
Mount the locking mechanism plate vertically in a vise or mounting fixture with the plunger
lock at the 12 o'clock position.
Insert the ‘U- tool’ into the top and bottom holes of the selector assembly and rotate the
selector ring toward the OPERATE position.
Push the lock slide until the sleeve snaps into place.
While in the OPERATE position, wind out a short length of control cable and pass it through
the front of the selector assembly. Attach a mock source assembly or the test jumper
connector to the control cable connector and withdraw it into the selector assembly.
Pull on the section of control cable and confirm that the lock slide automatically secures the
connector. The lock slide must snap shut in a fast and smooth motion when triggered.
Verify the securement action of selector mechanism by attempting to both push and
pull the mock source assembly out of the selector mechanism while in the EXPOSE, LOCK
and CONNECT positions.
4.7
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MAINTENANCE INSTRUCTIONS
Rotate the selector mechanism back to the OPERATE position and push in the lock slide to
ensure smooth operation and positive engagement. Attempt to push the lock slide towards
the SECURED position to test for a positive engagement of the lock slide. If a smooth
operation is not attained and/or the lock slide can be forced into the secured position by
testing for positive engagement, disassemble and thoroughly re-inspect for faulty
components. Thoroughly inspect all components for rough edges or burrs, etc. which could
cause jamming or irregular operation. Replace parts as necessary, re-lubricate and
reassemble the selector assembly. Repeat the functional safety testing to verify smooth and
safe operation of the selector mechanism. Do not install the serviced back plate
(lock mechanism) module to the exposure device at this point.
7 Remove the front plate containing the outlet port mechanism from the empty Model 880
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device by removing the four
-18 x 1 2in socket button-head screws using the
tamperproof tool bit mounted in a ratchet.
After removing the outlet port mechanism, clean the ‘S’ tube of the exposure device by
pushing cloth swabs wetted with solvent through the ‘S’ tube until they come out clean.
Use a dry cloth swab to remove any residual solvent from the ‘S’ tube after cleaning.
Clean the exterior of the Model 880 using a mild detergent solution to remove all dirt and
grime. Visually inspect the exposure device's stainless steel end plates for weld failures
(cracks, etc.) on the locking mechanism and outlet port ends. Ensure the handle, the bottom
contact surfaces and sides comprising the plastic jacket are intact. Check the bottom
surfaces of the jacket to ensure the contact area is not excessively worn allowing contact of
the stainless steel body with a flat work surface. Additionally, if dents to the device's body or
flanges due to accidental drops are found during this inspection, these repairs must be
performed at an AEA Technology QSA service center.
Ensure that all of the information contained on the Model 880 label is legible. The trefoil
and the warning, ‘Caution or Danger, Radioactive Material’, must be legible at a distance
of 3ft (approximately 1m). The model number, serial number and Type B certification
number must also be legible. For label replacement, remove the old label from the
exposure device by using a number 30 drill-bit mounted in a hand drill. Remove the rivet
heads used to fasten the label to the stainless steel body by drilling through the rivet head
just enough to allow the rivet head to rotate freely. Remove all rivet heads to remove label.
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Install replacement label, install and use pop-rivet gun to seat new 8in x 16in stainless
steel rivets.
Disassemble the front plate (outlet port mechanism) by removing the set screw
(or roll pin) from the outlet port cover. Unscrew the two socket head cap screws from the
pivot disk. Remove and discard the two compression springs from the outlet port
mechanism and replace with new springs.
Clean all parts in solvent using a brush to dislodge all dust and dirt. Dry all components
thoroughly. Do not lubricate, leave all components completely dry.
Inspect for wear and burrs on the brass slider and rotor surfaces. Verify the tungsten port
shield is not loose within the rotor. If the port shield is loose, remove the set screw, apply
Vibratite™ thread sealant and retighten the set screw against the tungsten port shield.
If the port shield uses a roll pin, remove the roll pin and replace. Inspect the front plate's
outlet port for wear and burrs where the source guide tube bayonet fitting engages.
4.8
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MAINTENANCE INSTRUCTIONS
Install new compression springs and assemble the outlet port mechanism. Apply Vibratite™
thread sealant to the socket head cap screws before tightening. Install a new set screw to
the outlet port cover.
After assembly of the front plate, perform the following safety function tests using a
bayonet source guide tube fitting. Pull the outlet port cover and rotate clockwise 90
degrees. Movement should be smooth and limited to a clockwise 90 degree turn. Insert a
bayonet fitting into the outlet port and rotate 90 degrees in a counter-clockwise direction.
Insertion and rotation of the bayonet fitting should be smooth and without snags. Rotate
the outlet port cover from a 3 o'clock position to a 5 o'clock position. This operation moves
the rotor from the port shield position to a pass through section of the rotor. Reverse the
operation to disengage the bayonet fitting. Repeat the function test three times to ensure
smooth operation.
8 Re-assemble the Model 880 exposure device by performing the following steps:
Apply Permantex™ anti-seize thread lubricant to the first several end threads of the back
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plate’s (locking mechanism) four
-18 x 1 2in socket button-head screws. Align and attach
the locking mechanism assembly to the exposure device's end plate by installing the four
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-18 x 1 2in screws using a tamperproof tool bit mounted in a calibrated torque wrench.
Torque the tamperproof screws in an opposing cross-pattern to 110in /lb (12.43Nm),
+ or - 5in /lb (0.57Nm).
Apply anti-seize thread lubricant to the first several end threads of the front plate's
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(outlet port) four
-18 x 1 2in socket button-head screws. Align and attach the
outlet port assembly to the exposure device's end plate by installing the four
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-18 x 1 2in screws using the tamperproof tool bit mounted in a calibrated torque
wrench. Torque the tamperproof screws in an opposing cross-pattern to
110in /lb (12.43Nm) + or - 5in /lb (0.57Nm).
Operationally test the function of the entire system using a bayonet-fitting source guide
tube, the remote controls and a mock source assembly.
Attachment of the bayonet source guide tube to the outlet port must be smooth and
without resistance. Rotate the outlet port mechanism to enable exposure of the mock
source assembly.
Connect the (serviced) remote controls to mock source assembly connector and the device
locking mechanism. Push the lock slide into the EXPOSE position and crank the control cable
into the exposure mode. While cranking the mock source assembly from the exposure
device, carefully feel for resistance or snags. During retraction of the mock source assembly
back into the exposure device, carefully feel for any resistance or snags during movement.
Conclude the test by verifying the lock slide automatically secures the mock source assembly.
Action of the lock slide should be smooth with an audible ‘snap’ during automatic securing.
After automatic securing, attempt to expose the mock source assembly from the exposure
device to confirm a positive capture. Repeat this testing several times. If resistance, snags or
sluggish movement of the lock slide is discovered during this testing, remove the outlet port
and locking mechanism plates to determine the cause. Repeat all safety function tests if any
additional servicing is required.
Clean the Model 550 jumper gauge in solvent. Lubricate the inner sleeve with light oil while
moving the sleeve back and forth. Apply a light coat of oil over the entire jumper and insert
back into the spring clip of the locking mechanism's protective cover.
4.9
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MAINTENANCE INSTRUCTIONS
Annual maintenance for the remote controls
Tools required for complete maintenance of Models 692, 693, 664 remote controls,
compatible with Models 880, 660 and 460 exposure devices:
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in open-end wrench for the control conduit swage fittings.
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2in open end wrench for the 5-16 control crank handle bolt.
Slot screwdriver for the 10-32 remote control crank screws.
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8in wrench for the 10-32 control crank stop nuts.
0.050in Allen wrench for the 4-40 set screw on the odometer knob on the Model 693
and Model 664 remote control units.
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Control cable run-off prevention (stop) spring removal tool if required.
Model 550 connector NO GO gauge for wear check of the control cable connector.
X7 magnification glass for control cable inspection if required.
Micrometer for measurement of control cable diameter.
Materials required for complete maintenance of Models 692, 693, 664 remote controls:
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Clean solvent: fresh mineral spirits recommended for cleaning and degreasing remote
control mechanism, control cable and cleaning the control conduits internally.
(Follow manufacturers safety precautions for use, handling, storage and disposal.)
Large pan for cleaning and degreasing the control crank assembly and control cable.
Clean lint-free rags and detergent to clean the exterior of the control conduits.
Mil-Spec grease, MIL-G-23827B or C, MIL-PRF-23827C (or equivalent radiation
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resistant grease) for lubricating the control cable and control crank mechanism.
Stainless steel, brass or synthetic bristle brush to clean control crank parts and the
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control cable.
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Compressed air source and hand nozzle to blow dry the control cable internal Teflon™
liner of the remote control conduits after cleaning.
3M™ yellow polyvinyl tape (or black polyvinyl electrical tape) for repair of cuts in remote
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control conduits.
Safety glasses.
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Remote control maintenance requirements
1 Disconnect the remote control unit from the exposure device.
2 Straighten out the remote control housings on a work surface, then remove the control
cable from the remote control conduits (661 safety connector side) until it stops (a stop
spring on the end of the control cable). Rubber gloves are recommended for this operation.
Do not use excessive force during removal of the control cable. During removal of the
control cable, it should be coiled in loops no less than a 12in (305mm) diameter and secure.
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3 Disconnect the remote control conduit fitting from the control crank using the
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open-end wrench. Remove the stop spring from the end of the control cable and pass the
control cable through the crank gear to completely disengage. Label the remote control
conduits for proper assembly after the servicing.
4 Pull the remaining control cable through the 661 safety connector and secure.
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5 Using the
in open-end wrench, remove both remote control conduits from the 661
safety connector and the control crank.
6 Thoroughly clean the control cable using a brush in a degreaser bath. Use compressed air
to blow off residual solvent after the degreasing operation. Be sure to follow the solvent
manufacturer's safety recommendations.
4.10
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MAINTENANCE INSTRUCTIONS
7 Perform the following inspections of the control cable.
Use the Model 550 NO GO gauge to inspect the control cable connector for wear. Closely
inspect the connector for bends or cracks in the neck (shank) area and dented areas on the
ball of the connector. Remove the control cable from service if any cracks or bends in the
shank or dents in the ball of the male connector are found during this inspection. The male
connector should not be bent at an angle greater than 15 degrees from the axis of the
control cable in the area where it is crimped. Using your hands, attempt to twist or rotate
the male connector off the control cable. If any movement is possible during this test,
the control cable must be removed from service and the male connector must be replaced.
Carefully inspect the control cable directly behind the remote control cable connector
and approximately 12in (305mm) beyond the male connector looking for the
following anomalies:
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Cuts, breaks, nicks or fraying in the spiral windings of the cable.
Kinks or permanent bends.
Rust (red oxide) on the inner and outer core of the cable.
Uniformity of the spacing between the outer helical windings of the cable.
G
G
G
Check for flattened areas and excessive wear that reduces the cable's outer
diameter less than 0.183in (4.7mm).
Perform a flexibility (spring) test of the cable by bending the connector end
G
of the cable into a ‘U’ shape and then releasing it. A cable that is bent/released and
does not spring back into an essentially straight shape is indicative of internal
corrosion of the cable. The cable must be removed from service.
G
Carefully examine the cable in the area of the control crank assembly looking for
cuts, breaks, fraying, rust, unusual stiffness and uniformity of the spacing between
the outer spiral windings.
Examine the entire length of cable looking for defects described above.
G
If a control cable is deemed as defective during this inspection, remove it from service and
tag it with a label to prevent inadvertent use.
The control cable (Model 550 male) connector must be replaced at intervals not to exceed
five (5) years. Maintenance program administrators must maintain traceability records for
replacement of all ‘Safety Class A’ designated components.
8 Lightly lubricate the control cable using MIL-G-23827B or C, MIL-PRF-23827C grease or
equivalent. Apply additional grease to the first 3ft (approximately 1m) of control cable
(male connector end).
9 Clean the exterior of the remote control conduits using clean rags and a detergent.
Remove all dirt and grease from the yellow polyvinyl conduits and swaged fittings.
Carefully inspect the entire length of remote control conduits for cuts and melted areas.
Repairs to cut or melted areas can accomplished by taping the area with 3M™ yellow
polyvinyl tape (or black polyvinyl electrical tape). The tape will prevent the ingress of water
and other liquid that would cause corrosion of the remote control conduit's inner braids and
the remote control cable. Look and feel for dents and depressions in the remote control
conduits. Minor dents can be rounded out by gently tapping the area with a small hammer.
Examine the control conduits where they protrude from the swage fittings, looking for
bulges or cracks in the polyvinyl. Remote control conduits with large dented areas or
cracks/ bulges near the swage fittings should be sent to the manufacturer for repairs.
4.11
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MAINTENANCE INSTRUCTIONS
Clean the interior of both remote control conduits by pouring 4-5oz (100ml) of clean
solvent into one end. Use compressed air to blow the solvent through the entire length of
conduits into a clean white cloth attached to the opposite end. Repeat this cleaning process
until the solvent blown through the conduit comes out clean. Use the compressed air
to thoroughly dry the interior of the conduit. Residual solvent left in the remote control
conduit will dilute the lubrication applied to the remote control cable diminishing the
protective qualities.
Check the swage fittings to ensure the threads are not stripped and are clean. Using your
hands, attempt to twist or rotate the swage fittings off the control conduits. If any
movement is possible, the control conduit must be removed from service and new swage
fittings must be installed.
5
/
16
10 Remove the crank arm from the control crank assembly by removing the
hex bolt and washer.
in
While wearing safety glasses, carefully remove the control crank assembly from the handle
or frame by unscrewing the four bind head screws from the stop nuts.
Separate the two halves of the control crank housing.
CAUTION
Ensure the cable adapters stay in the bottom control crank housing during separation.
Care should be taken to avoid losing control of the tensioned wear strip that may fly out
during separation of the control crank housing. This is the reason why safety glasses
must be worn.
Disassemble and degrease the drive wheel, wear strip, the two cable adapters, the two
brake jaws, the two halves of the control crank housing and brake bearing. The wheel
bearings may be left in the control crank housing during cleaning, but care should be taken
not to lose the spacer rings that fit between the wheel bearings and the drive wheel as
applicable. Clean and inspect all parts for damage or wear and replace as necessary.
If applicable, remove the reset knob of the odometer by loosening the two Allen set screws,
then remove the odometer cover by removing the two bind head screws that fasten it to the
mounting plate. Do not disassemble the odometer.
Clean the helical gear of the odometer with solvent using a brush to dislodge any material
between the gear teeth. Check the odometer for proper operation: turning the gear should
turn the odometer but the odometer shaft should still be able to turn when the gear is held
fixed (for zeroing the odometer).
Clean the drive wheel in solvent using a brush to dislodge any dirt between gear teeth.
Inspect the drive wheel's gear teeth looking for broken or bent teeth. If the drive wheel has
broken or bent teeth, use a file to grind the tooth flush with the drive wheel. Up to three
consecutive teeth can be missing from the drive wheel before a replacement is required.
Light rust may be removed from the wear strip using fine sandpaper and machine oil.
Lightly grease the drive wheel hub, wheel bearings and the wear strip before reassembling.
Place one of the cable adapters in the lower control crank housing. Place one end of the
wear strip against the cable adapter then fit the rest in the track of the housing. Fit the
other cable adapter in place to retain the wear strip.
CAUTION
Wear safety glasses when inserting the wear strip. It will be under tension and could
suddenly fly out during assembly.
4.12
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MAINTENANCE INSTRUCTIONS
Place the drive wheel in the lower half of the control crank housing making sure the spacer
rings are between it and the wheel bearings if applicable.
Assemble the two brake jaws, brake bearing and brake arm. The angled sides of the brake
jaws should be facing the retract side of the control crank housing.
Place the upper control crank housing over the assembly while keeping them level and press
them together.
Check the control crank mechanism is properly assembled by turning the shaft. It should
spin freely.
Check the operation of the friction brake while holding both halves of the control crank
housing together tightly. If it does not function correctly, check for faulty assembly or
excessively worn brake jaws.
As applicable, mount the control crank housing on the frame or handle with the four bind
5
/
16
head screws and stop nuts. Secure the crank arm to the shaft using the
and hex bolt.
in washer
For reel type controls, secure the odometer cover to the mounting plate with two bind head
screws. Secure the odometer's reset knob to the shaft by tightening the two Allen head
screws, leaving clearance between the knob and the cover.
After assembly, perform a check to ensure the control crank will turn freely. Set the brake
lever to the ON position and attempt to turn the handle using moderate pressure. Do not
apply excessive force. Run a section of the control cable through the control crank to ensure
the control crank operates easily without snags or resistance.
If applicable, make sure the odometer turns when the crank handle is turned.
If the odometer does not function during this test, check for improper assembly or
damaged parts.
11 Clean the 661 safety connector assembly using a brush and solvent. Ensure the movable
jaws of the safety connector are not excessively loose or worn where they swivel in the clevis
pins. Examine the connector collar for bent or loose connecting pins and excessive wear on
the inner-mating surface. Examine the face of the connector body where the control cable
protrudes and verify that long-term usage has not chamfered the area.
Re-assembly of the remote control unit:
Reattach the remote control conduits to the safety connector assembly. Attach the EXPOSE
sheath to the EXPOSE side of the control crank assembly.
Lay the remote control conduits out in a straight line or a wide loop. Feed the end of
the control cable into the conduit as far as it will go. As the control cable is being fed into
the remote control conduits, feel for any resistance that indicates damage of the remote
control conduit.
Turn the control crank handle in the RETRACT direction until the end of the control cable is
protruding. Screw the safety stop spring onto the end of the control cable approximately
2in (50mm) from the end.
Connect the RETRACT control housing to the control crank housing. Retract the control cable
fully, watching for any binding that may indicate damage to the control housing.
If applicable, reset the odometer to zero with the control cable fully retracted.
Replace the protective rubber cap over the end of the safety connector assembly.
4.13
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MAINTENANCE INSTRUCTIONS
Quarterly and annual maintenance for source guide tubes
Tools required for maintenance of source guide tubes:
G
A424-9XL mock source assembly to perform function tests after cleaning and inspection.
Length of clean control cable to push A424-9 XL through a 7ft (2.1m) source guide tube.
1in-18 tap and 1in-18 die nut for male and female threads of the source guide tubes,
G
G
if required.
Materials required for maintenance of source guide tubes:
G
Solvent: Clean mineral spirits to clean the source guide tubes internally.
Clean lint-free cloths and detergent to clean the exterior of the source guide tubes.
Mil-Spec grease, MIL-G-23827B or C, MIL-PRF-23827C (or equivalent radiation
G
G
resistant grease) to lubricate the swage fittings on the source guide tubes.
Compressed air source and hand nozzle to blow dry the internal conduit of the
G
source guide tubes.
G
3M™ yellow polyvinyl tape (or black polyvinyl electrical tape) for repair of cuts in the
source guide tubes.
Source guide tube maintenance
1 Clean the exterior of all the source guide tubes thoroughly using clean cloths and a
detergent. Remove all of dirt, grease and grime from the yellow polyvinyl source guide tubes
and the swage fittings.
2 Clean the interior of each source guide tube by pouring 4-5oz (100ml) of clean
solvent into one end. Manipulate the source guide tube back and forth to cause the solvent
to wash the interior of the entire length of source guide tube. Pour the solvent into a used
solvent container. Refill the source guide tube with clean solvent and repeat the cleaning
operation. Repeat this cleaning process until the solvent poured out of the source guide
tube into the used solvent container is clean. Use a compressed-air hose to blow out any
residual solvent from the source guide tubes. Use of a clean white cloth attached to one end
of the source guide tube will trap any debris or residual solvent when blowing out the
source guide tubes. Repeat the cleaning process until the cloth ‘trap’ indicates dirt is not
present within the source guide tubes.
3 Carefully inspect the entire length of each source guide tube for cuts and melted areas.
Repairs to cut or melted areas can be accomplished by taping the area with 3M™ yellow
polyvinyl tape (or black polyvinyl electrical tape). Taping the damaged area of the polyvinyl
sheath will prevent the ingress of water and other liquid that would cause corrosion to the
remote control cable. Carefully look and feel for dents and depressions in the source guide
tubes. Even a small inward dent in the source guide tube could cause a seized source
assembly resulting in emergency operations. A ‘mock’ (Model A424-9XL) source assembly
attached to a section of control cable that is pushed through the entire length of source
guide tube provides additional confirmation the source guide tube suitable for use.
4 Inspect the swage fittings of each source guide tube to ensure the threads are not
stripped or galled. If the threads are damaged, the use of a 1in-18 tap or die-nut and oil can
be used to clean the damaged area. Using moderate pressure, attempt to twist the swage
fitting off the source guide tube. If any movement is possible, remove from service and
replace the swage fitting. Inspect the source guide tube near the swage fitting for breaks
and bulging, remove from service and send to a service center for repairs. Repair can be
accomplished by cutting away the damaged area and replacing the swaged fitting. Inspect
the exposure head (source stop) to for excessive wear or perforations on the end-stop and
the side where the collimator (beam limiter) is mounted. Damaged fittings or exposure
heads on source guide tubes can be replaced at an AEA Technology QSA service center. If the
swage fittings are not damaged and are securely attached to the source guide tube, apply a
light coat of grease to the threads and install the protective covers over the fittings.
4.14
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MAINTENANCE INSTRUCTIONS
Misconnect test after reloading sealed source into the exposure device
After performing the annual maintenance, the complete locking system should be tested
by the maintenance program administrator or Radiation Safety Officer. A misconnect test
on the exposure device including the radioactive source assembly effectively tests the
integrity of the entire locking system. This procedure detects long-term wear (or damage)
of control and locking mechanism components including the control cable and sealed source
connectors simultaneously.
The test should only be performed by personnel that are formally trained, authorized and
thoroughly familiar with annual maintenance procedures. This test is performed by engaging
the remote control connecting plug assembly into the exposure device's locking mechanism
without first engaging the control cable connector within the source assembly connector.
The ability to then rotate the locking mechanism from the CONNECT position towards the
LOCK position indicates critical dimensions of the locking system are excessively worn
to a unsafe condition. Extreme care should be exercised to prevent rotating the locking
mechanism's selector ring beyond the LOCK position. If the locking mechanism and remote
controls fail a misconnect test the equipment must be removed from radiographic
operations. The equipment must not be used until repairs are performed and misconnect
test results are satisfactory.
During the performance of the misconnect test there is a risk of losing control of the
radioactive source assembly if:
G
the components are excessively worn or damaged
the person performing the test intentionally or inadvertently rotates the selector ring
G
from the CONNECT position to the OPERATE position
the person performing the test intentionally or inadvertently pushes the lock slide into
G
the EXPOSURE mode.
Contact an AEA Technology service center if you have questions regarding the
misconnect test.
Annual maintenance records
Records of all equipment inspected and maintained during the annual maintenance must
be recorded. Records should indicate:
G
the date of the inspection and maintenance.
name of the qualified individual performing the required inspections.
problems found and maintenance or repairs performed.
model number and serial number of the exposure device.
associated equipment that was inspected and maintained.
part numbers and associated lot numbers or serial numbers of replacement
G
G
G
G
G
parts installed.
4.15
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MAINTENANCE INSTRUCTIONS
Model 880 Delta, Model 880 Sigma and Model 880 Elite safety class A components
Safety Class A designation items
Items that comprise the Model 880 Delta, Sigma or Elite radiographic exposure device and
associated equipment that are critical for safe radiological operation are classified as Class A
items or components. Class A items can be structures, components and systems whose
failure or function could directly result in a condition adversely affecting public health and
safety. This would include extreme conditions such as the loss of primary containment with a
subsequent release of radioactive material and or a loss of shielding creating a substantial
safety hazard. Replacement parts that are sent to you with a safety Class A designation are
clearly marked with lot numbers and contain instructions to maintain traceability.
Considerations of Safety Class A items
Users of the Model 880 Delta, Sigma and Elite exposure device and associated equipment
must recognize their responsibilities of maintaining the integrity of the Type B(U) package
and the control of Safety Class A items and components by:
G
maintaining traceability of Class A replacement items or components to a specific
exposure device or an associated component.
use of manufacturer specified items to maintain the integrity of the exposure
G
device/transport package according to the certifications. Do not use generic grade
items or components that do not meet original design specifications.
performance of periodic inspections to verify the Class A items are not excessively worn
G
from long term use or have been damaged from accidents.
use and handling of the system consistent with it's design and intended application.
promptly notifying the manufacturer in the event a Safety Class A item or component
G
G
which contains a defect or deviates from the original design specifications. This action
will initiate a formal evaluation of the defect or deviation.
4.16
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MAINTENANCE INSTRUCTIONS
REAR PLATE ASSEMBLY
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REAR PLATE ASSEMBLY
ITEM PART NUMBER QTY. DESCRIPTION
ITEM PART NUMBER QTY. DESCRIPTION
1
88014
1
1
1
1
1
1
1
2
2
1
LOCK COVER ASSEMBLY
SELECTOR RING RETAINER
SELECTOR RING
11
12
13
14
15
16
17
18
19
20
SCR003
SCR072
SLV005
88022
4
2
4
1
1
2
2
1
2
1
SOCKET HEAD CAP SCREW
SOCKET HEAD CAP SCREW
RUBBER SLEEVE
2
85701-5
88026
3
4
SPR005
88025
COMPRESSION SPRING
SLEEVE
LOCK MOUNT
5
66001-11
LOCK ASSEMBLY
6
88024
LOCK SLIDE
LOCK PIN (supplied with 66001-11)
LOCK SPRING (supplied with 66001-11)
SOCKET HEAD CAP SCREW
KEY
7
SPR006
66001-6
SPR004
88021
COMPRESSION SPRING
ANTI-ROTATE LUGS
COMPRESSION SPRING
REAR PLATE
8
SCR023
9
66001-811
66001-20
10
DUMMY CONNECTOR
15
19
18
DOUBLE
STACKED
APPLY
THREAD
LOCK
20
17
16
13
12
14
8
1
2
3
4
APPLY
THREAD
LOCK
9
11
5
6
7
10
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MAINTENANCE INSTRUCTIONS
FRONT PLATE ASSEMBLY
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FRONT PLATE ASSEMBLY
ITEM PART NUMBER QTY. DESCRIPTION
ITEM PART NUMBER QTY. DESCRIPTION
1
2
88033
1
1
1
1
1
2
1
1
2
1
1
PORT COVER (SET SCREW TYPE)
PORT COVER (ROLL PIN TYPE)
SET SCREW
8
PIN024
SCR160
88039
1
2
1
1
1
1
1
1
ROLL PIN
88033A
SCR162
PIN036
88031
9
SOCKET HEAD CAP SCREW
PIVOT DISK
10
11
ROLL PIN
88034
PORT SHIELD (ROLL PIN TYPE)
PORT SHIELD (SET SCREW TYPE)
ROLL PIN
3
4
5
FRONT PLATE
88034A
PIN038
SCR157
88035
88036
WASHER
12
13
88032
ROTOR (ROLL PIN TYPE)
ROTOR (SET SCREW TYPE)
COMPRESSION SPRING
SHAFT (SET SCREW TYPE)
SHAFT (ROLL PIN TYPE)
SET SCREW
88032A
SPR033
88037
SLIDER
6
7
COMPONENTS ON SOME MODELS DIFFER SLIGHTLY
FROM THOSE ILLUSTRATED – CHECK PART NUMBER
BEFORE ORDERING
88037A
6
APPLY
THREAD
LOCK
13
10
9
12
11
6
7
8
EQUAL
PROTRUSION
4
5
1
2
3
APPLY
THREAD
LOCK
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MAINTENANCE INSTRUCTIONS
CONTROL ASSEMBLIES
SOURCE GUIDE TUBES
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CONTROL ASSEMBLIES
ITEM PART NUMBER QTY. DESCRIPTION
ITEM PART NUMBER QTY. DESCRIPTION
1
SCR125
SCR008
BLT008
4
4
1
1
1
1
2
1
2
1
2
1
1
2
1
1
1
15/8in BIND HEAD SCREW
11/4in BIND HEAD SCREW
HEXAGONAL BOLT
WASHER
18
19
20
21
22
23
24
GEA-002
PIN008
1
1
1
1
4
1
2
2
2
1
1
1
1
1
1
1
HELICAL GEAR
2
ROLL PIN
3
66404-1
BBS-005
NUT025
66103
GEAR SHAFT
4
WSH019
68901
OILITE BEARING
5
CRANK ARM
STOP NUT
6
BBS-004
81800-10
68900-8
68900-4
68900-3
BBS-001
68900-7
81800-1
68900-2
69302-1
BBS-007
PIC-003
BRAKE BUSH
SAFETY CONNECTOR
25ft (7.6m) HOUSING
35ft (10.7) HOUSING
50ft (15.2m) HOUSING
50ft (15.2m) CONTROL CABLE
70ft (21.3m) CONTROL CABLE
100ft (30.5m) CONTROL CABLE
ODOMETER ASSEMBLY
HANDLE
7
CONTROL CRANK HOUSING
CRANK DECAL
59125
8
59135
9
BRAKE JAW
59150
10
11
12
13
14
15
16
17
BRAKE ARM
25
55005
BALL BEARING ASSEMBLY
WEAR STRIP
55010
55009
DRIVE WHEEL
26
27
28
29
69303
CABLE ADAPTER
GEAR SHAFT
69201-3
66410
FRAME
OILITE BEARING
WASHER
66403
ODOMETER ASSEMBLY
REEL TYPE MODEL
PISTOL GRIP MODEL
15
16
17 19
18
14
7
9
10
22
5
4
6
18
11
13
7
20
21
19
11
12
3
8
23
24
1
2
25
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22
26
2
27
22
28
29
1
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SAMPLE TRANSPORTATION INSTRUCTIONS
The sample transportation regulations in section 5 are specific
to the USA only. As stated in section 5.1 you should reference all
international and local regulations before shipping.
The following instructions are samples for the transport of radiography devices and
sources within the United States and are based on current transport regulations.
Shippers of radioactive materials in regulatory jurisdictions outside of the USA must ensure
full compliance with all current and applicable transport regulations.
For transportation in ADR countries the package documentation must include
a copy of HI018 (current issue) containing guidance notes for shipping to conform with
TS-R-1(ST-1, Revised).
Listed are the regulations that should be referenced for the legal transport of radioactive
materials:
G
International Atomic Energy Agency requirements No. TS-R-1(1996),
‘Regulations for the Safe Transport of Radioactive Materials’
International Atomic Energy Agency requirements No. SS-6,
G
‘Regulations for the Safe Transport of Radioactive Materials’
International Air Transport Association,
G
‘Dangerous Goods Regulations’
International Civil Aviation Organization,
G
‘Technical Instructions For The Safe Transport Of Dangerous Goods By Air’
International Maritime Organization,
G
‘International Maritime Dangerous Goods Code’
U.S. Department of Transportation,
G
Title 49 Code of Federal Regulations Parts 171 through 178
U.S. Nuclear Regulatory Commission,
G
Title 10 Code of Federal Regulations, Part 71
Canadian Nuclear Safety Commission, Nuclear Safety and Control Act,
G
‘Packaging and Transport of Nuclear Substances Regulations’
Transport Canada ‘Transport of Dangerous Goods Regulations’
Road Transport in Great Britain is governed by the Radioactive Material
G
G
(Road Transport) (Great Britain) Regulations 2002
Contents
Part A Transport Package
Part B Receipt of Radioactive Material (exposure device containing a sealed source)
Part C Shipment of Radioactive Material (exposure device containing a sealed source)
Part D Shipment of Empty Uranium Shielded Containers (empty exposure device)
Part E Shipment of Empty Packages Which Previously Contained Radioactive Material
(empty exposure device in overpack)
Part F Carriage of Radioactive Material
5.1
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SAMPLE TRANSPORTATION INSTRUCTIONS
Part A - Transport package
The Model 880 Delta, Model 880 Sigma and Model 880 Elite are approved as radiographic
exposure devices and Type B(U) transport packages under the certification number
USA/9269/B(U)-XX (for XX enter either 85 or 96 according to the package certification).
The -96 designation for Type B(U) certifications is being phased in worldwide and will go
into full effect on January 1, 2004.
The Model 880 Delta, Model 880 Sigma or Model 880 Elite exposure devices are tested
and approved for transport with or without the optional jacket as the Type B(U) package.
The transport package without a jacket consists of the stainless steel housing, front and
back plates with the appropriate mechanisms and the exposure device's label.
As a shipper of radioactive material, you must perform a pre-shipment inspection to verify
conformance to the Type B(U) certification for each individual shipment of radioactive
material. This verification assures the package's integrity is not compromised, which may
cause a reduction of safety while in the transport system.
Visually inspect the transport package:
G
Assure the source assembly is properly secured in the locked position.
The selector ring must be in the LOCK position, the protective cover in place,
the plunger lock engaged and the key removed.
Assure all screws are present and secured.
Assure the front port is properly secured.
Assure the seal wire is properly installed, if used.
G
G
G
G
Assure the ‘Danger, Radioactive Material’ label is securely attached and visible on
the package. Assure that the label is legible and not defaced.
Assure the other information on label is legible (the warnings and trefoil, the model
G
number and serial number and the Type B certification number).
Visually assure all welded areas are not cracked. If there is any evidence of cracked
G
welds contact AEA Technology QSA prior to shipment.
Assure all the conditions of the Certificate of Compliance are met and the transport
G
package has all the required markings.
Wipe test the transport package over an area of 300cm2 and assure the level of
G
removable contamination is less than 0.00001 µCi per cm2.
Part B - Receipt of radioactive material
NOTE:
1 A radioactive material package must be accepted from the carrier at the time it is
delivered. [10CFR20.1906(a)(1)]
2 If a radioactive material package is to be held at the carrier's terminal for pickup,
arrangements must be made to receive notification from the carrier of the arrival of the
package at the time of arrival. The package must be picked up expeditiously upon receipt
of notification (within three hours if practicable). [10CFR20.1906(c), Reg. Guide 7.3-5]
3 Monitoring as described in steps 2-3 must be performed as soon as practicable but at
least within three hours if received during normal working hours or within three hours of
the next work day if received after normal working hours. [10CFR20.1906]
3a Upon receipt of a package of radioactive material, the package shall be placed in a
restricted area. Assure appropriate personnel are notified.
3bSurvey the exterior surfaces of the package at the time of receipt and assure that the
maximum radiation level does not exceed 200mRem/hr (2mSv/hr). Survey at 1m from the
exterior surfaces of the packages and assure that the maximum radiation level does not exceed
10mRem/hr (0.1mSv/hr). If either of these limits are exceeded, notify the Radiation Safety
Officer immediately. Record the maximum radiation levels measured at the package surface
and at 1m from the package surface on the Receiving Report. [10CFR20.1906(d), 10CFR71.47]
5.2
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SAMPLE TRANSPORTATION INSTRUCTIONS
3c If the source is not Special Form, you must make a contamination wipe test of the
exterior surface of the package. Wipe a representative surface of the package, covering an
area of approximately 300cm2, using a cloth patch and moderate pressure. Measure the
activity on the patch using the contamination monitor and assure that the activity does not
exceed 0.001microcurie (37Bq)/100cm2. If this limit is exceeded, notify the Radiation Safety
Officer immediately. Record the results of this contamination wipe test on the Receiving
Report. [10CFR20.1906(d)]
NOTE: If any of these limits are exceeded, the Radiation Safety Officer must immediately
notify the USNRC (or applicable agreement state agency) and the final delivering carrier.
4 Inspect the package for any evidence of physical damage. Record the results of this
inspection on the Receiving Report. Also record on the Receiving Report the date, source
model number, source serial number, radionuclide, activity, the individuals name making the
record, transport package model number, mass or activity of the depleted uranium and the
package serial number. [10CFR34.63]
5 Assure that the package is locked or place the package into an outer locked container.
Secure the package in accordance with your license requirements. [10CFR34.35, 10CFR34.23]
6 Keep a copy of the Operating Manual for the package on file to assure you have the
proper opening and handling instructions. Assure that the instructions are followed and any
noted special precautions are performed. [10CFR20.1906(e)]
Note: For licensees transporting special form sources in licensee owned or operated vehicles
to and from a work site are exempt from the contamination monitoring requirements.
The radiation survey required upon receipt must still be performed. [10CFR20.1906(f)]
Part C - Shipment of radioactive material
1 Prior to shipment of a Type B package within the USA, assure that you are a
registered user of the radioactive material package you wish to ship. Also, assure
that you have appropriate quality assurance procedures for Type B packages.
[10CFR71.12, 10CFR34.31(b)]
2 Pre-shipment training requirements
Prior to shipping hazardous materials, personnel must be trained in accordance with
49CFR172, Subpart H and be retrained every three years.
Training shall include:
G
General awareness/familiarization training.
Function specific training.
Safety training, providing:
G
G
- Emergency response information.
- Measures to protect employees from potential hazards associated with hazardous
material to which employees may be exposed in the workplace, both radioactive and
chemical hazards.
- Employer safety measures implemented to protect employees.
- Methods and procedures for accident avoidance, i.e. proper procedures for handling
hazardous material packages.
- OSHA or EPA training, MSDS information.
G
An appropriate test must be administered and the following documentation must be kept:
- Employee name.
- Date of most recent training.
- Description, copy or location of the training methods.
- Name of person performing training.
- Certification that person has been trained and tested.
Documentation should be kept in one file, i.e. all radiation safety related training used as
part of the Hazmat training should be included.
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3 Prior to shipment assure the package and its contents meet the following requirements:
G
The contents are authorized for use in the package.
The package is in good physical condition for transport.
All locks or required shipping plugs are properly installed and seal wired where required.
All conditions of the Type B(U) Certificate of Compliance or Type A approval are met.
G
G
G
[10CFR71.87]
NOTE: Quantities of special form radioactive material equal to or greater than
27Ci (1TBq) of Ir-192, 80Ci (3TBq) of Se-75 or 10.8Ci (0.4TBq) of Co-60 must be shipped
in Type B packages. Quantities less than these quantities can be shipped as Type A.
Type A testing documentation must be kept on file for one year after shipment.
G
Maintain copies of the most current Type B, Type A and Special Form certification on file.
4 Assure that the source is secured in the proper shielded position in the shipping package
as described in the appropriate operations manual. Perform a pre-shipment inspection
(see Part A of these instructions) and verify conformance to the transport package certificate.
5 As applicable, attach a security seal with an identification mark to the package closure
that serves as a tamper indicator. [49CFR173.412(a)]
6 If the shipping package is to be packaged inside a crate or other outer packaging, the
outer packaging must be strong enough to withstand the normal conditions of transport
and must not reduce the safety of the package. The shipping package must be placed within
the outer package with sufficient blocking to prevent shifting during transportation.
[49CFR173.25]
7 Survey the exterior surfaces of the package and assure that the maximum radiation level
does not exceed 200mRem/hr (2mSv/hr). Survey 1m from the exterior surfaces of the
package and assure that the maximum radiation level does not exceed 10mRem/hr
(0.1mSv/hr). Determine the proper shipping labels to be applied to the package using the
criteria of table 1. [49CFR172.403]
NOTE: If shipping a Type B container inside an overpack or convenience box in the
back of a vehicle, survey and label both the inner Type B package and the overpack.
Placarding the vehicle is dependent on the category of label applied to the overpack
if used. [49CFR173.448]
Table 1
Maximum radiation
level at surface
Maximum radiation
level at 1m
Radioactive
White I
0.5mRem/hr
(0.005mSv/hr)
None
Radioactive
Yellow II
50mRem/hr
(0.5mSv/hr)
1.0mRem/hr
(0.01mSv/hr)
Radioactive
Yellow III
200mRem/hr
(2mSv/hr)
10mRem/hr
(0.1mSv/hr)
For a package, both the transport index (TI) and the surface radiation level conditions
shall be taken into account in determining which is the appropriate category of
radioactive material label. Where the TI satisfies the condition for one category but the
surface radiation level satisfies the condition for a different category, the package shall
be assigned to the higher category of the two. For this purpose, category White-I shall
be regarded as the lowest category.
The TI is the maximum radiation level measured in mRem/hr at a distance of 1m from
the external surfaces of the package. When recording the TI, the dose rate units of
mRem/hr are not listed, for example a reading of 2mRem/hr (20µSv/hr) would indicate
a TI = 2.0. (Note that the TI is rounded to the nearest tenth value.)
5.4
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8 Properly complete two shipping labels indicating the contents (Iridium-192, Cobalt-60, etc.),
the activity of the source (in Becquerels or multiples of Becquerels, e.g. GigaBecquerels (GBq))
and the transport index. The transport index is used only on Yellow II and Yellow III labels
and is defined as the maximum radiation level in mRem/hr at 1m from the package surface
(see Table 1). [49CFR172.403(g)]
9 Assure that any old shipping labels have been removed from the package. Apply two
properly completed labels to two opposite sides of the package (excluding the bottom
surface). [49CFR172.403(f)]
10 For air shipments within the USA, the package must be labeled with ‘Cargo aircraft only’
labels. Ensure that these labels do not cover any other package markings or labels.
11 Mark the outside of the package with the proper shipping name and identification
number (Radioactive Material, Type B(U) Package UN2916 or Radioactive Material,
Type A Package, Special Form, UN3332)) if not already marked. Place the letters RQ
(stands for Reportable Quantity) next to the proper shipping name when shipping more than
10Ci (370GBq) of Ir-192, Se-75, Co-60, Yb-169, or 1Ci (37GBq) of Cs-137. [49CFR172.300]
NOTE: Effective January 1, 2004, shipments by Air will require the addition of
Air Eligibility markings adjacent to the proper shipping name. The marking must include the
symbol of an aircraft within a circle and may include the words, ‘Air Eligible’.
12 If the shipping package is inside a crate or other outer packaging, mark the outside package
‘Inside package complies with prescribed specifications’ and list the appropriate DOT specification
number or USNRC Type B(U) number and the words ‘Type A’ or ‘Type B’ as appropriate in letters a
minimum of ½in (13mm) high. [49CFR172.310; 49CFR173.471; 49CFR173.25]
NOTE: If shipping a Type A quantity of an isotope in a Type B package that is not approved
for that isotope, i.e. Co-60 in the model 660 device, you must cover the Type B labels with
the appropriate Type A information.
13 Assure that the levels of removable radioactive contamination on the outside surface of
the outer package do not exceed 0.00001 microcurie per cm2. [49CFR173.443]
14 If the package gross weight exceeds 110lb, mark the outside of the package with the
permissible gross weight. [IATA10.7.1.3.1]
15 Properly complete the shipping papers indicating:
a Proper shipping name, United Nations Class Number ‘7’, and identification number
(i.e. Radioactive Material, Type B(U) Package, Class 7, UN2916 or Radioactive Material,
Type A Package, Special Form, Class 7, UN3332).
b The letters RQ must appear next to the proper shipping name when shipping more than
10Ci (370GBq) of Ir-192, Se-75, Co-60, Yb-169 or 1Ci (37GBq) of Cs-137.
c
Name of the radionuclide (i.e. Iridium-192, Selenium-75, Cobalt-60, Cesium-137).
d Physical or chemical form (i.e. Special Form).
e
Activity of the source in Becquerels or other appropriate multiples of Becquerels on the
DOT label and the shipping papers.
NOTE: Number of Ci x 37 = number of GigaBecquerels (GBq).
f
Category of label applied (i.e. Radioactive Yellow II).
g Transport Index.
h USNRC identification number or DOT specification number (i.e. USA/9296/B(U)-XX
(for XX, enter either 85 or 96 according to the package certification or DOT-7A).
i
For export shipments, the IAEA identification number (i.e. USA/9296/B(U)-XX
(for XX, enter either 85 or 96 according to the package certification).
For Canadian shipments, include the Canadian Endorsement Number CDN/E199/-XX
(for XX, enter either 85 or 96 according to the package certification number)
for the package.
5.5
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j
Shipper's certification: ‘This is to certify that the above named materials are properly
classified, described, packaged, marked and labeled and are in proper condition for
transport according to the applicable regulations of the Department of Transportation.’
[49CFR172.204(a)]
For air shipments, the following shipper's certification may be used: ‘I hereby certify that
the contents of this consignment are fully and accurately described by proper shipping
name and are classified, packed, marked and labeled and are in proper condition for
carriage by air according to applicable national governmental regulations.’
For air shipments within the USA, the following statement: ‘This shipment is within the
limitations prescribed for cargo aircraft only’
NOTE: For shipments in company vehicles to and from job sites, the shippers certification
is not required.
k
The shipping papers must indicate your company's emergency telephone number. The
telephone number must have 24-hour coverage in case of an emergency concerning your
shipment. The telephone number must be clearly visible on the shipping paper and must
be answered by a person that can provide immediate emergency response information.
Beepers and pagers are not acceptable.
16 For air shipments, the shipping papers must meet the requirements specified in IATA
for a Shipper's Declaration for Dangerous Goods. In addition to the information listed in
section 15 of this part, the following information needs to be specified:
a Air waybill number: Enter the number of the air waybill to which the declaration form
will be attached. (This may be amended by the carrier.)
b Aircraft limitations: Specify that the shipment is within the limitations for
‘Cargo aircraft only.’ A notation can be added in the handling information box of the
Shipper's Declaration which states ‘This shipment may be carried on passenger aircraft
outside U.S. jurisdiction’.
c
Airport of departure: Enter the full name of the airport of city of departure, which may
be amended by the carrier.
d Airport of destination: Enter the full name of the airport or city of destination, which
may be amended by the carrier.
e
f
Shipment type: Specify the shipment type as ‘Radioactive’.
Under nature and quantity of dangerous goods, specify the number of packages (of same
type and content), their type of package and activity in Becquerels or multiples thereof
(units used must be clearly indicated) in each package, including packages in overpacks.
(If relevant) Indication of use of overpack and dimensions of the overpack (including
dimensional units). When an overpack is used, the wording ‘overpack used’ must be
inserted on the declaration form immediately after all the relevant entries relating to the
packages within the overpack. In such cases, packages within overpacks must be listed
first. Dimension units must be in multiples of meters.
g The 24-hour emergency number required by Step 15k of this part, must appear in the
‘Additional Handling Information’ section of the Declaration for Dangerous Goods.
h For shipment of special form radioactive material, the USDOT Special Form Certificate of
Competent Authority for the radioactive source must be included. (e.g. USA/0335/S).
The information on the Declaration for Dangerous Goods must be entered strictly in
accordance with the order specified in the latest edition of the International Air Transport
Association, Dangerous Goods Regulations. Questions regarding completion of a Shipper's
Declaration for Dangerous Goods should be directed to the Radiation Safety Officer.
5.6
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Part D - Shipment of empty Uranium shielded containers
1 Assure that the package does not contain a radioactive source. Perform the following
procedure to confirm there are no unauthorized source assemblies within the container:
G
Transfer the authorized source assembly from the Model 880 in accordance with the
source changer operations manual.
After removing the source assembly and disconnecting the source assembly, attach the jumper
G
(dummy connector without a serial number) to the male connector of the control cable.
Retract the control cable and jumper and disconnect the controls from the
G
locking mechanism.
G
Insert the protective cover into the locking mechanism, rotate the selector ring into the
lock position, engage the plunger lock and remove key.
Remove the source identification tag from the Model 880 and place it with the
G
source assembly.
G
In some regulatory jurisdictions, ‘empty’ labels or tags must be attached to the
empty Model 880.
2 If the shipping package is to be placed inside a crate or other outer packaging, the outer
packaging must be strong enough to withstand the normal conditions of transport and must
not reduce the safety of the package. The shipping package must be placed within the outer
package with sufficient blocking to prevent shifting during transportation. [49CFR173.25]
3 Assure that the levels of removable radioactive contamination on the outside surface of
the outer package does not exceed 0.00001 microcurie per cm2. [49CFR173.443]
4 Survey the package at the surface and at 1m from the surface to determine the proper
shipping labels to be applied to the package.
NOTE: If the surface radiation level does not exceed 0.5mRem/hr (5µSv/hr) and there is no
measurable radiation level at 1m from the surface, continue with the instructions in section
5 and skip section 6. If either of these levels are exceeded, skip section 5 and continue with
the instructions in section 6.
5 If the surface radiation level does not exceed 0.5mRem/hr (5µSv/hr) and there is no
measurable radiation level at 1m from the surface, no label is required.
a Mark the outside of the package with the proper shipping name and identification
number (Radioactive Material, Excepted Package - Articles Manufactured from Depleted
Uranium, UN2909) and the statement ‘Exempt from specification packaging, shipping
paper and certification, marking and labeling and exempt from the requirements of
49CFR Parts 171-178 except requirements within those parts relating to the reporting
of Incidents and decontamination, the training requirements of Subpart H of Part 172
and the shipping paper requirement of Subpart C of Part 172. This exemption is
Authorized per 49CFR173.426.’
Additionally, a notice must be enclosed in or on the package, included with the packing
list or otherwise forwarded with the package. The notice must include the name of the
consignor or consignee and the statement:
‘This package conforms to the conditions and limitations specified in 49CFR173.426 for
Radioactive Material, Excepted packages - Articles Manufactured from Depleted Uranium,
UN2909’. [49CFR173.422 49CFR173.426]
b Properly complete the shipping papers, including:
i. For all shipments the following statements:
‘Exempt from specification packaging, shipping paper and certification, marking and
labeling and exempt from the requirements of 49CFR Parts 171-178 except requirements
within those parts relating to the reporting of Incidents and decontamination, the
training requirements of Subpart H of Part 172 and the shipping paper requirement of
Subpart C of Part 172. This exemption is Authorized per 49CFR173.426.’
5.7
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‘This Package Conforms to the Conditions and Limitations Specified in 49CFR173.426
for Radioactive Material, Excepted Packages - Articles Manufactured From Depleted
Uranium, UN2909.’
ii. Your company's 24-hour emergency phone number.
NOTE: When shipping by Air, Excepted packages are exempt from the requirement for
the use of Dangerous Goods Declaration. For Excepted Packages, the following
endorsement is required on the air waybill, ‘Radioactive Material, Excepted Package-
Articles Manufactured from Depleted Uranium, UN2909’ [IATA10.8.8.3.3].
c
For air shipments, the shipping papers must meet the requirements specified in IATA for
a Shipper's Declaration for Dangerous Goods. In addition to the information listed in 5b,
the following information needs to be specified:
i. Air waybill number: Enter the number of the air waybill to which the declaration form
will be attached. (This may be amended by the carrier.)
ii. Airport of departure: Enter the full name of the airport of city of departure, which may
be amended by the carrier.
iii. Airport of destination: Enter the full name of the airport or city of destination, which
may be amended by the carrier.
6 If the surface radiation level exceeds 0.5mRem/hr (5µSv/hr), or if there is a measurable
radiation level at 1m from the surface, use the criteria of table 1 to determine the proper
shipping labels to be applied to the package.
Table 1
Maximum radiation
level at surface
Maximum radiation
level at 1m
Radioactive
White I
0.5mRem/hr
(0.005mSv/hr)
None
Radioactive
Yellow II
50mRem/hr
(0.5mSv/hr)
1.0mRem/hr
(0.01mSv/hr)
Radioactive
Yellow III
200mRem/hr
(2mSv/hr)
10mRem/hr
(0.1mSv/hr)
For a package, both the transport index (TI) and the surface radiation level conditions
shall be taken into account in determining which is the appropriate category of
radioactive material label. Where the TI satisfies the condition for one category but the
surface radiation level satisfies the condition for a different category, the package shall
be assigned to the higher category of the two. For this purpose, category White-I shall
be regarded as the lowest category.
The TI is the maximum radiation level in measured in mRem/hr at a distance of 1m
from the external surfaces of the package. When recording the TI, the dose rate units
of mRem/hr are not listed, for example of reading of 2mRem/hr would indicate a
TI = 2.0. (Note that the TI is rounded to the nearest tenth value.)
a Mark the outside of the outer shipping package with the proper shipping name and
identification number (Radioactive Material, Low Specific Activity (LSA-1), UN2912).
If the container is packaged inside a crate or other outer packaging, mark the outer package
with the statement ‘Inside package complies with prescribed specifications’. [49CFR172.300]
b Properly complete the shipping papers, indicating:
i. Proper shipping name and identification number (i.e. Radioactive Material,
Low Specific Activity (LSA-1), UN 2912, Class 7).
ii. Name of the radionuclide (i.e. depleted Uranium-238).
iii. Physical and chemical form (i.e. Solid Metal).
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iv. Activity of the uranium in Becquerels or other appropriate multiples of Becquerels.
NOTE: Number of Ci x 37 = number of GigaBecquerels (GBq). The activity in millicuries
for U-238 equals 0.16 x the shield weight in pounds (i.e. for a Model 650L with a 35lb
shield, the approximate activity would be 0.16 x 35lb = 5.6mCi).
v. Category of label applied (i.e. Radioactive Yellow II).
vi. Transport Index.
vii. USNRC identification number or DOT specification number, i.e. Model 880 cert:
USA/9296/B(U)-XX (for XX, enter either 85 or 96 according to the package certification).
viii.Shipper's certification:
‘This is to certify that the above named materials are properly classified, described,
packaged, marked and labeled and are in proper condition for transport according to
the applicable regulation of the Department of Transportation.’ [49CFR172.204(a)]
For air shipments, the following Shipper's Certification may be used:
‘I hereby certify that the contents of this consignment are fully and accurately described
above by proper shipping name and are classified, packed, marked and labeled and are in
proper condition for carriage by air according to applicable national governmental
regulations.’ [49CFR172.204(c)]
ix. For air shipments, the package must be labeled with a ‘Cargo aircraft only’ label
and the shipping papers must state: ‘This shipment is within the limitations prescribed
for cargo only aircraft’.
x. Your company's 24-hour emergency telephone number.
xi. The weight per package including the unit of measurement of the hazardous material
covered by the description (e.g. 100lb). (Note: For air shipments, the weight must be
in multiples of kilograms.)
c
For air shipments, the shipping papers must meet the requirements specified in IATA for
a Shipper's Declaration for Dangerous Goods. In addition to the information listed in 6b,
the following information needs to be specified:
i. Air waybill number: Enter the number of the air waybill to which the declaration form
will be attached. (This may be amended by the carrier.)
ii. Aircraft limitations: Specify that the shipment is within the limitations for ‘Cargo
aircraft only.’ A notation can be added in the handling information box of the
Shipper's Declaration which states ‘This shipment may be carried on passenger aircraft
outside U.S. jurisdiction’.
iii. Airport of departure: Enter the full name of the airport of city of departure, which
may be amended by the carrier.
iv. Airport of destination: Enter the full name of the airport or city of destination, which
may be amended by the carrier.
v. Specify contents (isotope) on the DOT hazard labels as LSA-1.
vi. Shipment Type: Specify the shipment type as ‘Radioactive’.
vii. Under Nature and Quantity of Dangerous Goods, specify the number of packages
(of same type and content), their type of package and activity in Becquerel or multiples
thereof (units used must be clearly indicated) in each package, including packages in
overpacks and LSA-1.
(If relevant) Indication of use of overpack and dimensions of the overpack (including
dimensional units). When an overpack is used, the wording ‘overpack used’ must be
inserted on the declaration form immediately after all the relevant entries relating to the
packages within the overpack. In such cases, packages within overpacks must be listed
first. Dimension units must be in multiples of meters.
5.9
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viii. The 24-hour emergency number required by Step 6bx of this part, must appear in
the ‘Additional Handling Information’ section of the Declaration for Dangerous Goods.
The information on the Declaration for Dangerous Goods must be entered strictly in
accordance with the order specified in the latest edition of the International Air Transport
Association, Dangerous Goods Regulations. Questions regarding completion of a Shipper's
Declaration for Dangerous Goods should be directed to the Radiation Safety Officer.
[49CFR172.402(b); 49CFR172.204(c)]
Part E - Shipment of empty packages which previously contained radioactive material
1 Assure that the package does not contain a radioactive source.
2 If the shipping package is to be placed inside a crate or other outer packaging, the outer
packaging must be strong enough to withstand the normal conditions of transport and
must not reduce the safety of the package. The shipping package must be placed within
the outer package with sufficient blocking to prevent shifting during transportation.
[49CFR173.25]
3 Assure that the levels of removable radioactive contamination on the outside surface
of the outer package do not exceed 0.001 microcurie per 100cm2. Assure that the levels of
radioactive contamination on the inside of the package does not exceed 0.1 microcurie per
100cm2. [49CFR173.428; 49CFR173.443]
4 Survey the package at the surface and at 1m from the surface. Assure that the surface
radiation level does not exceed 0.5mRem/hr (5µSv/hr) and there is no measurable radiation
level at 1m from the surface. Assure that any labels which had been previously applied are
removed, obliterated or covered. Affix an EMPTY label to the package. [49CFR173.29(e);
49CFR173.428]
5 Mark the outside of the package with the statement ‘Exempt from specification
packaging, shipping paper and certification, marking and labeling and exempt from the
requirements of 49CFR Parts 171-178 except requirements within those parts relating to
the reporting of incidents and decontamination, the training requirements of Subpart H of
Part 172 and the shipping paper requirements of Subpart C of Part 172. This exemption is
Authorized per 49CFR173.428.’
Additionally, a notice must be enclosed in or on the package, included with the packaging
list or otherwise forwarded with the package. The notice must include the name of the
consignor or consignee and the statement:
‘This package conforms to the conditions and limitations specified in 49CFR173.428 for
Excepted Radioactive Material, Empty Packages, UN2908’ [49CFR173.422; 49CFR173.428]
6 Properly complete the shipping papers including:
a For all shipments the following statements:
‘Exempt From Specification Packaging, Shipping Paper and Certification, Marking and
Labeling and Exempt from the Requirements of 49CFR Parts 171-178 Except
Requirements within those Parts Relating to the Reporting of Incidents and
decontamination, the training requirements of Subpart H of Part 172 and the shipping
paper requirements of Subpart C of Part 172. This exemption is Authorized
per 49CFR173.428.’
‘This Package Conforms to the Conditions and Limitations Specified in 49CFR 173.428
for Radioactive Material, Excepted Packages - Empty Packaging, UN2908’.
b Your company's 24-hour emergency telephone number.
7 For air shipments, the shipping papers must meet the requirements specified in IATA for a
Shipper's Declaration for Dangerous Goods. In addition to the information listed in section 6
of this part, the following information needs to be specified:
5.10
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a Air waybill number: Enter the number of the air waybill to which the declaration form
will be attached. (This may be amended by the Carrier.)
b Airport of departure: Enter the full name of the airport of city of departure, which may
be amended by the carrier.
c
Airport of destination: Enter the full name of the airport or city of destination, which
may be amended by the carrier.
Part F - Carriage of radioactive material
1 Assure that the vehicle used is in good condition and carries the normal complement of
safety equipment including Radiation Area signs, a length of rope, spare tire, fire
extinguisher, a set of vehicle tools and a set of flares. Assure that the glove compartment
contains the vehicle registration certification and an operating flashlight. Additionally, assure
that the operator has a calibrated and operable survey meter and assure that all individuals
traveling in the vehicle are wearing both a film badge and a direct reading pocket dosimeter.
2 Assure that the transport package is properly packaged, marked and labeled and assure
that the proper shipping papers are completed in accordance with the instructions for
shipping radioactive material. The shipping papers must be accessible from the drivers seat.
3 Place the transport package in the vehicle. Properly brace and secure the package against
movement in the vehicle. [49CFR177.842(d)]
4 Survey the driver's compartment to assure that the radiation level does not exceed
2mRem/hr (0.02mSv/hr). [49CFR177.842(g)]
NOTE: This requirement is mandatory only for exclusive use shipments by a common carrier.
[49CFR173.441(b)(4)]
5 If the vehicle is transporting a package bearing a Radioactive Yellow III label, the vehicle
must be placarded on all four sides with a Radioactive placard.
NOTE: Operation of a vehicle which is required to be placarded requires compliance with the
Federal Motor Carrier Safety Regulations of 49CFR Parts 390-397 and the Driver Training
requirements of 49CFR177.827; 49CFR177.804.
6 Complete the Radioactive Material Transport Checklist (see attached example). Forward a
completed copy to the Radiation Safety Officer upon completion of the carriage.
7 If the vehicle becomes disabled on the road, do not leave the vehicle unguarded when
going for help. A message for help may be sent by a passing motorist or the police may be
enlisted to guard the vehicle.
8 Should any kind of accident occur, make an immediate radiation survey to determine if
any radiation levels are unusually high. If unusual radiation levels exist, establish the boundary
of the restricted area. Keep all persons out of this area and get police assistance, if possible.
Notify the Radiation Safety Officer as soon as possible, but do not leave the scene without
assuring that the police or some other responsible party will keep people out of the area.
9 Collect information pertinent to the accident, such as names of witnesses, names of
people involved, names of police, license numbers and circumstances of the accident.
Call the Radiation Safety Officer promptly and give him as much information as possible.
10 If a source should escape from the packaging, the vehicle operator should make no attempt
to restore the source by himself. He should wait for assistance from the Radiation Safety Officer.
11 If the vehicle is going to be used for storage of radioactive material at a temporary job site:
a The vehicle's storage access entrance must be posted with ‘Caution Radioactive
Material’ signs.
b The vehicle must be secured/locked so that there is no unauthorized access.
c
Radiation levels must be below 2mR/hr outside the vehicle to meet unrestricted
area requirements.
5.11
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Radioactive material transport checklist
Date __________________________________ Operator ____________________________________
Destination _________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Transport container model ______________ Serial number________________________________
Radionuclide __________________________ Activity _____________________________________
Type of label applied ___________________ Transport index ______________________________
Survey meter model ____________________ Serial number ________________________________
Calibration date _______________________ Film badge __________________________________
Dosimeter serial number ________________ Initial reading ________________________________
Final reading ________________________________
Radiation area signs ____________________ Packing list __________________________________
Rope _________________________________ Bill of lading _________________________________
Radioactive material sign _______________ Emergency equipment ________________________
Radiation survey _______________________ Driver's compartment ________________ mRem/hr
(Record highest reading)
Vehicle (18in from surface) ___________ mRem/hr
Packages properly marked and labeled (including transport index) ________________________
Packages secured in vehicle _____________ Vehicle placarded ____________________________
Shipping papers properly completed __________________________________________________
Remarks: ___________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Operator's signature _________________________________________________________________
5.12
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DEFINITIONS AND TERMS
Area alarm
An area radiation level monitor that provides a highly visual warning when the radiation
level exceeds a pre-set threshold. Commonly referred to as Gammalarms, use is required by
most jurisdictions in permanent radiographic installations and they are often used in
conjunction with door interlocks and audible alarms. Portable area alarms are required by
some jurisdictions for radiography performed at temporary job-sites.
Alarm ratemeter
An alarm worn by radiography personnel that provides a continuous audible warning
when the alarm ratemeter detects a radiation level in excess of a pre-set threshold of
500mR/hr (5mSv/hr). This redundant safety alarm is required by regulation for temporary
job-site radiography within the USA.
Apparatus for industrial gamma radiography
Apparatus including an exposure device, a source assembly as applicable, a remote control,
a projection sheath, an exposure head and accessories designed to enable radiation emitted
by a sealed radioactive source to be used for industrial gamma radiography purposes.
Also known as: isotope radiography system, isotope radiography kit.
Automatic securing mechanism
An automatically activated mechanism located on the radiographic exposure device
designed to restrict the source assembly in the secured position.
Beam limiter
A shielding device for confining the elements of a beam of radiation to an assigned
solid angle. Beam limiters are generally manufactured from lead, tungsten and
depleted Uranium and are pre-positioned over/on the radiation source's working position.
Also known as: collimators.
Control crank
A control cable cranking device that is a component of the remote controls. The control
crank is used at a distance by the radiography personnel to move the radiation source to
and from the device, through projection sheaths to and from the exposure position.
Manual control crank mechanisms are commonly used, but automatic exposure controllers
are available which can be operated from a greater distance and allows preset timing and
automatic expose and retract modes. Also known as: wind-outs, crank-outs, hand-cranks.
Control cable
A cable or other mechanical means used to project and retract the source assembly out from
and into the radiographic exposure device by means of remote control. The control cable
includes the means of attachment to the source holder. Also known as: remote control
cable, drive cable, Teleflex™.
Control cable sheath
Rigid or flexible tube for guiding the control cable from the remote to the radiographic
exposure device and providing physical protection to the control cable. The control cable
sheath includes the necessary connections for attachment to the radiographic exposure
device and to the remote control. Also known as: control cable housing, conduit.
6.1
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DEFINITIONS AND TERMS
Exposure device (container)
Radiographic exposure devices are used to remotely project the radiation source to a
predetermined exposure position when required and to securely maintain it and shield it
when it is not in use. Current equipment requirements require devices be designed and
tested to ISO/ANSI standards and pertinent transportation regulations for transport
containers. Also known as: projector, gamma ray projector (G.R.P.), camera, pill-box,
source-box, exposure container.
Exposure head
Device which locates the sealed source included in the source assembly, in the selected
working position and prevents the source assembly from projecting out of the projection
sheath. Also known as: source stop, end stop, snout, hose-head.
Locked position
Describes the condition when the lock on a radiographic exposure device or transport
container is fully engaged to lock the source assembly in place and the key is removed from
the lock. This condition prevents unauthorized personnel access to the sealed source
assembly locked within the device.
Maximum rating
The maximum activity expressed in bequerels and curies that cannot be exceeded, of a
sealed source specified by radionuclide by the manufacturer when contained within a
radiographic exposure device or a transport container.
Plunger lock
A mechanical device with a key used to lock or unlock the radiographic exposure device or
transport container.
Projection sheath
A flexible or rigid tube for guiding the source assembly from the radiographic exposure
device to the working position, having the necessary connections for attachment to the
radiographic exposure device and the exposure head or including the exposure head itself.
The projection sheaths also provide protection of the source assembly and attached control
cable from water, dirt, sand and other foreign materials usually present at radiography
environments. Also known as: source guide tubes, guide tubes, source tubes, head hoses.
Examples of rigid projection sheaths include j-tubes, probes, jet engine probes.
Remote control
The mechanical device that enables the source assembly to and from a working position by
operation from a distance away from the radiographic exposure device. The remote control
includes the control crank mechanism (normally a hand-crank), and where applicable, also
the control cable, the control cable sheath and the necessary connections and attachments.
See additional description under ‘control crank’.
Reserve sheath
Remote control sheath containing the length of control cable, necessary for the projection of
the source assembly.
Sealed source
Radioactive source sealed in a capsule or having a bonded cover, the capsule or cover being
strong enough to prevent contact with and dispersion of the radioactive material under the
conditions of use and wear for which it was designed. Commonly referred to as: the ‘source’
or the ‘pill’.
6.2
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DEFINITIONS AND TERMS
Secured position (shielded position)
Condition of the radiographic exposure device and source assembly, when the sealed source
is fully shielded and restricted to this position within the radiographic exposure device.
Note: When in the secured position during radiographic operations, the radiographic
exposure device may be unlocked.
Simulated source
A sealed source whose structure is such as that of the sealed radioactive source, but not
containing any radioactive material. Also known as: mock source, dummy source, phantom
source, dummy pill.
Source assembly
A source holder with a sealed source attached or included. In cases where the sealed source
is directly attached to the control cable without the use of a source holder, the source
assembly is the control cable with the sealed source attached. In cases where the sealed
source is not attached to the control cable nor included within the source holder, the sealed
source is the source assembly.
In the case where a simulated source is attached to or included with a source holder or
control cable, this becomes a simulated source assembly.
Flexible type source assemblies are also known as ‘pigtails’. The source assembly is most
commonly referred to as the ‘source’.
Rigid or chain link type source assemblies are also known as: source rods, source pencils,
source trains, source chains.
Source holder
A holder or attachment device, by means of which a sealed source or simulated source
can be:
G
directly included in the radiographic exposure device (category I apparatus - an exposure
device in which the source assembly is not removed for exposure).
G
fitted at the end of the control cable (category II apparatus - an exposure device from
which the source assembly is projected out through a projection sheath to the exposure
head for exposure. The exposure is remotely operated.)
Source holders may be an integral part of the source assembly or may be capable of being
dismantled for sealed source replacement.
Source changers
A lockable Type A or Type B transport container used to transport new sealed source
assemblies, exchange them and return depleted sealed source assemblies to the
manufacturer. Source changers are also utilized for storage of sealed source assemblies.
Also known as: source exchangers, storage containers.
Working position
Condition of the exposure container and source assembly when in the position intended for
the performance of industrial gamma radiography.
6.3
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EMERGENCIES AND PERSONNEL SAFETY
Emergencies
During the termination of a radiographic exposure, observation of the survey meter
provides an indication of source movement while cranking the remote control handle.
After retracting the sealed source into the exposure device, radiographers are required to
perform a confirmatory survey of the exposure device, the projection sheaths and beam
limiter when used. Performing a confirmatory survey after a radiographic exposure is
required by regulation and is the only method that the radiographer should rely on to
determine if a source assembly is in the fully shielded position within the exposure device.
If the radiographer measures any radiation level that indicates the sealed source is not fully
shielded while performing the confirmatory survey, the radiographer must first recognize
that problem exists and then follow his company’s emergency procedures. Emergency
conditions are those problems in which the source assembly cannot be returned to the
shielded position by normal means, specifically the remote control crank mechanism.
The majority of problems experienced by radiographers are where the source assembly
becomes disconnected or when the source assembly becomes jammed in the projection
sheath while in an exposed position. The important safety points for radiographers to
follow are:
G
Always perform a confirmatory survey after each exposure.
If higher than expected radiation levels are measured, recognize that an
G
emergency exists. (Stop and Think!).
Follow emergency procedures.
Do not attempt to retrieve the sealed source. Secure the area and notify the
G
G
Radiation Safety Officer.
The radiography crew is limited to the following basic steps and must be adhered to
under regulation:
1 Immediately leave the area and maintain continuous surveillance of high radiation area.
2 Adjust the restricted area boundary to ensure the measured dose/rate is < 2mR/hr.
Do not allow anyone into the area.
3 Immediately notify the Radiation Safety Officer.
4 Do not leave the area unattended under any circumstances. Maintain security of
the area until the Radiation Safety Officer arrives at the site.
Do not under any circumstances attempt to retrieve the source. Performing source retrieval
is a licensed activity that allows only specially trained RSOs to respond to an emergency.
This regulatory requirement is the result of overexposures to radiographers attempting to
handle emergency retrievals by themselves.
WARNING:
An unshielded source must not be picked up or handled at close range under any
circumstances. An unshielded source at close range can cause serious injury or death to
anyone who is exposed to it, even for a short duration of time.
Training
Formal classroom training in radiation safety, supervised hands-on training and certification
by an independent certifying organization of radiographers are essential components for
radiological safety in isotope radiography and is a regulatory requirement in the United
States and Canada.
Sentinel, AEA Technology QSA provides radiation safety and inspection & maintenance
training at the Baton Rouge, Louisiana and Burlington, Massachusetts facilities. On-site
training is available by arrangement.
7.1
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EMERGENCIES AND PERSONNEL SAFETY
Access to restricted areas
The site where radiography is performed must be separated from other work areas by as
much distance as possible. If applicable, check for occupation of the areas above and below
the radiography site.
Clearly defined boundaries must be set up and warning signs displayed to provide
warning and prevent access to the radiography site by unauthorized personnel before
any exposure begins.
No one should enter the boundary marking a ‘Restricted Area’ or ‘Controlled Area’ without
a film badge or TLD, direct reading pocket dosimeter (or electronic pocket dosimeter) and
alarm ratemeter (if required).
A pocket ‘chirper’ alarm is required in some countries to provide radiography personnel with
an immediate audible warning of a high radiation intensity.
United States regulations
‘High Radiation Area’ signs must be posted where a dose of 100mRem (1mSv) could be
received in any one hour. The radiographers must provide continuous direct surveillance of
the area or when a permanent installation is used, the entrance must be equipped with door
interlocks, audible and visual warnings.
‘Radiation Area’ signs must be posted where dose of 5mRem (5µSv) could be received in any
one hour.
‘Restricted Area’ must be identified and posted where a dose of 2mRem (20µSv) could be
received in any one hour or 100mRem (1mSv) in one year.
In practice, the ‘Radiation Area’ and ‘Restricted Area’ are combined and identified by the use
of a rope barrier. The area is posted with the ‘Radiation Area’ signs where the maximum
dose will not exceed 2mR (20µSv) in any one hour or 100mRem (1mSv) in a year. The
practice of using the ‘Radiation Area’ sign at the ‘Restricted Area’ boundary clearly defines
why the area has been restricted. Additionally, the trefoil (radiation) symbol provides a visual
warning for those individuals who cannot read.
During a radiographic exposure, a calibrated and operable survey meter must be used to
confirm the dose rate at the ‘Restricted Area’ boundary and adjusted if the dose rate
exceeds the limit of 2mRem (20µSv) in one hour.
During the radiographic exposure, the radiographers must maintain continuous direct
surveillance of the ‘High Radiation Area’ in addition to ensuring that no one enters their
posted ‘Restricted Area’.
EU Regulations
A ‘Controlled Area’ must be marked with a barrier at a distance where the radiation intensity
will not exceed 0.75mR/hr (7.5µSv/hr). The boundary dose rates must be noted and the
record kept for 2 years. During radiographic operations, only classified radiation workers are
allowed inside this area.
A ‘Supervised Area’ is defined as the area where the boundary dose rate limit must not
exceed 0.25mR/hr (2.5µSv/hr). No barriers or notices are required here, but the radiographer
must be vigilant to ensure that personnel in this area do not enter the ‘Controlled Area’.
Personnel monitoring
All personnel who enter a ‘Restricted’ or ‘Controlled’ area or are present during radiographic
operations are required to wear the appropriate personnel monitoring devices as required by the
regulatory jurisdiction. These devices can include; film badges; thermoluminescent dosimeters
(TLD); optically stimulated luminescence badges; direct reading pocket dosimeters; electronic
pocket dosimeters; alarm ratemeters; and audible alarms. Calibrated and operable survey meters
must be used to determine radiation levels when conducting radiographic operations.
7.2
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INSTRUCTIONS FOR DISPOSAL
By international regulations, radioactive materials that are no longer required must be
transferred to a licensed recipient for final disposition. Iridium-192 source assemblies that
have depleted beyond their useful working life may be returned to authorized recipients
using a source changer authorized for the specific model source assembly.
Authorized recipients will provide any specific conditions to the shipper as required by
regulatory authorities. As a minimum, sources that are transferred for a final disposition
must be within a current leak test and properly secured within an authorized package
before shipment.
Damaged, cropped, modified or contaminated source assemblies may require special
handling and special transport containers. Notify the authorized recipient for specific
instructions in these circumstances.
Depleted Uranium (DU) shielded exposure devices that are removed from service due to
severe damage, worn through ‘S’ tubes or decommissioning reasons must be sent to a
licensed recipient for final disposition. If the Type B transport status of a damaged exposure
device is impaired, the exposure device must be transported without radioactive source
assemblies. DU shielded exposure devices sent for final disposition must be properly
packaged, surveyed, marked and labeled before placement into the transportation system.
Contact AEA Technology QSA, Inc. for assistance in the transfer of DU shielded exposure
device for final disposition.
8.1
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Sales
Americas, Canada, Asia-Pacific, Middle East
Sentinel
AEA Technology QSA
6765 Langley Drive, Baton Rouge
Louisiana 70809
USA
Tel + 1 225 751 5893
Toll Free + 1 800 225 1383
Fax + 1 225 756 0365 or
+ 1 225 751 8082
Sales
Europe, Scandinavia, Africa, India
Sentinel
AEA Technology QSA GmbH
Gieselweg 1, Braunschweig 38110
Germany
Tel + 49 5307 932 396
Fax + 49 5307 932 194
Manufacturing
Sentinel
AEA Technology QSA
40 North Avenue, Burlington
Massachusetts 01803
USA
Tel + 1 781 272 2000
Fax + 1 781 273 2216
AEA Technology QSA is a business name of AEA Technology plc
Sentinel is a trademark of AEA Technology plc
© AEA Technology plc
AEA Technology plc, 329 Harwell, Didcot, Oxfordshire OX11 0QJ
All goods and services are sold subject to the terms and conditions
of the company within the AEA Technology group which supplies
them. A copy of these terms and conditions is available on request.
All brand names and product names where used are acknowledged
to be trademarks of their respective holders.
MAN-027 March 2004
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