ML20154S332
| ML20154S332 | |
| Person / Time | |
|---|---|
| Issue date: | 10/21/1998 |
| From: | Michele Burgess, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20154R650 | List:
|
| References | |
| SSD, NUDOCS 9810270375 | |
| Download: ML20154S332 (4) | |
Text
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REGISTRYIOFIRADIOACTIVE SEALED SOURCES AND DEVICES
-SAFETY: EVALUATION OF SEALED SOURCE OCT 21 1998
'NO.: NR-300-S-878-S DATE:
PAGE 1 OF'4 SEALED SOURCE TYPE: ~Picke'r Model'T/O-571' Calibration Unit Source Assembly MODEL:
TC-1
-MANUFACTURER / DISTRIBUTOR:
Gamma' Industries, Inc.
P.O. Box 2543
. Baton Rouge,, LA 70821 t
k I
1 ISOTOPE:
MAXIMUM ACTIVITY:
I 1
Cecium-137 300 mci"(11.1 GBq)
I l
zLEAK TEST? FREQUENCY:
6 Months:
PRINCIPALLUSE, (I) Calibration Sources CUSTOM SOURCE:
YES X
NO i
7 9810270375 981021
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REGISTRY'OF RADIOACTIVE SEALED SOURCES.AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.: 'NR-300-S-878-S DATE:
OCT 21 1998 PAGE 2 OF 4 MEALED' SOURCE' TYPE: ' Picker Model T/O 571 Calibration Unit Source Assembly DESCRIPTION:
'The Gamma industries Model TC-1 is designed for use in the Picker-Model.-T/O 571 calibration unit.
~
The-Cesium source is~a Gamma Industries, Model VD-HP, which is
- doubly encapsulated..The Model VD-HP source is placed in one end of'a' stainless steel' rod which~is 5.625 inches-(14.27 cm) long and 0.312 inches (7.92 mm) in diameter.
Three inches from the
, source end the diameter is-reduced to 0.250 inches (6.35 mm).
Securing of the VD-HP source in the source assembly'is
. accomplished using a'heliarc welding technique.
LABELING:
The source _ capsules are not large enough to allow direct i
labeling:.however,.the calibration unit which contains the source capsule is-labeled.
For additional labeling information, please refer to the Picker-Model T/O 571 safety evaluation.
Gamma Industries will secure a source identification tag over the area on.the existing nameplate where " Isotope" and " Capacity" appear.
The-' identification tag'will-include isotope, activity.and date.
CONDITIONS OF NORMAL USE:
The-TC-1~ source assembly.is designed for use in the Picker Model T/O 571 calibration unit, used to calibrate portable gamma survey meters.
PROTOTYPE TESTINGi L
See the' Gamma Industries Model~VD-HP for Prototype testing, t
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P REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE
.NO.:'NR-300-S-878-S DATE:
OCT 21 1998 PAGE 3 OF 4 i
SEALED-SOURCE TYPE: Picker Model T/O.571 Calibration Unit Source Assembly
-QUALITY ASSURANCE AND CONTROL':
Each VD-HP assembly is.subjecte'd to a wipeltest after the material is sealed'in the capsule.
If the results of the wipe.
tests are doubtful, then a hot water bubble : test is performed.
No source will be shipped if' removal contamination exceeds 0.005 microcurie (185 Bq)'.
A decay chart and source tag are i
supplied with each source, providinglinformation concerning'the activity an'd leak test:results.
1 l
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
Model TC-1 source ~ assemblies shall be possessed'and used by j
specific licensees of theLU.S.:NRC or: Agreement States.
'Model TC-1 source assemblies shall not be subjected to e
environmental or other conditions of-use which exceed ANSI I
classification 77E43515.
Model TC-1 source assemblies'shall be leak tested at
-intervals not to-exceed six-(6) months using techniques approved by the licensing authority and capable of detecting 0.005 microcurie (185.Bq) of~ removable contamination.
'The Picker Model T/O 571 calibration unit shall be transferred to Gamma Industries for' loading of the Model TC-1 source assembly.
Handling, storage, use, transfer, and disposal:
To be
-determined by'the licensing authority.
-This registration sheet and the information contained within the references shall-not be changed without the written consent of the NRC.
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-REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO~.: NR-300-S-878-S.
DATE:
OCT 21 1998 PAGE 4 OF 4 SEALED' SOURCE TYPE: Picker Model T/O 571 Calibration Unit Source Assembly SAFETY ANALYSIS'
SUMMARY
The Model TC-1 source is no longer manufactured or distributed by
' Gamma Industries, Inc. and Gamma Industries, Inc. is no longer in
- business.
Therefore, the registration certificate is being converted to an' inactive registration certificate.
The source was originally approved for licensing purposes by the Louisiana Division of Radiation Control.
NRC. attempted to obtain copies of all information submitted by the registrant in support of the evaluation.
However, NRC could not locate all the
{
information.
Therefore, no safety.~ evaluation of the source was performed as part of-the conversion of the certificate to
. inactive status.
]
REFERENCES:
The.following supporting documents for the'Model TC-1 are hereby incorporated by reference and are'made a part of this registry document.
- -Letter from Gamma Industries dated October 20, 1982.
ISSUING AGEFCY:
U.S. Nuclear Regulatory Commission
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[U OCT 211998 Date:
Reviewer:
/JhnW.
Lubinski
'Date:
2 bl998 =
. Concurrence:. MuMJ M,
.A Michele L.'Burge(s I
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