ML20217R132
| ML20217R132 | |
| Person / Time | |
|---|---|
| Issue date: | 11/05/1982 |
| From: | Jonathan Brown NRC |
| To: | |
| Shared Package | |
| ML20217R134 | List: |
| References | |
| SSD, NUDOCS 9805140151 | |
| Download: ML20217R132 (4) | |
Text
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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l
NO: NR-459-S-101 -S DATE:
NOV 51982 PAGE 10F 3 i
DEVICE TYPE:
Sealed Source l
MODEL: 4F6Y i
MANUFACTURER / DISTRIBUTOR:
Minnesota Mining and Manufacturing Company l
TLAAP Building 590 New Brighton, MN 55112 j
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MANUFACTURER / DISTRIBUTOR:
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ISOTOPE:
Cesium-137 MAXIMUM ACTIVITY:
- 25. millicuries LEAK TEST FREQUENCY:
6 months PRINCIPAL USE:
(T) Instructional Aid CUSTOM DEVICE:
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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE N_0 : NR-459-S-101 -S DATE:
0 PAGE 2 0F 3 NOV 5W DEVICE TYPE:
Sealed Source DESCRIPTION:
The sealed source is constructed by placing.a smaller diameter capsule containing the Cesium-137 microspheres into a larger capsule to give the overall dimensions of 0.25" i
diameter and 0.69 + 0.05" in length. A plug is inserted to fill the void space and is tungsten inert gas welded to seal the Type 316 stainless steel capsule.
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'h' LABELING:
The capsule is engraved with the serial number and at 1809 from the serial number is engraved Cesium-137. Space limitation prevent any further labeling.
MF #L, n gor,4uy/pA r,s DIAGRAM:
See attachment.
CONDITIONS OF NORMAL USE:
The Federal Emergency Management Agency uses the source to train personnel in emergency handling of ra'dioactive material.
PROTOTYPE TESTING:
The source has been tested in accordance with ANSI N542 and has nbtained a Classification of 77C66646.
EXTERNAL RADIATION LEVELS:
The manufacturer obtained the following dose rates froin a 20 millicurie loaded source Contact 30 cm 30 cm 3900 mr/hr 75 mr/hr*
190 mr/hr *'
- To meterface
- To active center of meter (detector) l QUALITY ASSURANCE AND CONTROL:
The Quality Control Group operates from policies and procedures described in the l-Static. Control Systems Division Quality Manual (New Brighton Plant). The quality system is based on Mil-Q-9858A guidelines on file with the NRC.
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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES l
SAFETY EVALUATION OF SEALED SOURCE l
N0: NR-459-S-101-S DATE:
NOV 5 1982 PAGE 3 0F 3 I
DEVICE TYPE:
Sealed Source LIMITATIONS AND/0R OTHER CONSIDERATIONS OF USE:
A.
This source shall be distributed only to specific licensees of the NRC or j
Agreement States.
B.
Leak Testing:
This source shall be leak tested at six-month intervals using l
techniques approved by the licensing authority and capable of detecting the presence of 0.005 microcurie of activity.
C.
Handling, storage, use, transfer, and disposal:
To be determined by the licensing authority.
D.
The source shall not be subjected to environmental or other conditions of use which exceed ANSI Classification C66646 (ANSI N542-1977).
SAFETY ANALYSIS
SUMMARY
Based on our review of the'information and test data contained in the references cited below, we conclude that Model 4F6Y sealed source is acceptable for licensing purposes.
Furthermore, we conclude that this source would be expected to maintain containment integrity for normal research, development, and industrial uses. Additionally, the source would be expected to maintain containment integrity under accident conditions applicable to the uses specified in this certificate.
REFERENCES:
The following supporting documents for the Model 4F6Y source are hereby incorporated by reference and are made a part of this registry document:
Static Control System /3M letters dated September 24, 1982 and October 25, 1982, with enclosures thereto.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission
!M 277 _ /Sw,4 Date:
Reviewer:
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