ML20212E677
| ML20212E677 | |
| Person / Time | |
|---|---|
| Issue date: | 10/31/1997 |
| From: | Jankovich J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Pollock E NUCLEAR RESEARCH CORP. |
| References | |
| SSD, NUDOCS 9711040019 | |
| Download: ML20212E677 (2) | |
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4 A%4l-UNITED STATES -
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WASHINGTON. D.c. 20555 0001 october 31,'1997 Mr. Earl M. Pollock, President Nuclear Research Corporation 125 Titus Avenue Warrington, PA 18976
Dear Mr..c liock:
o This letter is in response to your application dated February 21,1997, requesting an amendment to Registration Certificate NR 504-D 109-G to add a number of sealed source models. We are current!y processing your request. However, to continue with our evaluation, we need the following information:
Construction 1.
The current registration certificate (NR 504-D-109-G) lists source assemblies that accept Nuclear Research Corporation Model S-6 source capsules with the dimensions of dia. 0.325-0.470 in. However, the source capsules that you listed in your amendment have different dimensions; e.g. dia. 0.50-0.75 in. for Texas Nuclear Model 57157C, or dia. 8-12 mm for Bebig Model Cs7.PO4. Please provide technical data and drawings for all source assemblies that will be used to fit the five different models of source capsules which you proposed in the amendment.
External Radiation Levels L
2.
Source assemblies of different designs may alter the radiation profile around the gauge.
Therefore, please provide complete analyses of the radiation profiles for the SH-300 Series gauges equipped with each of the source assemblies that you intend to use in l
response to item 1 above.
L Leak Test Frequency i
3.
The current registration certificate specifies a leak test frecuency of 3 years. Please provide a documentation that the sources are accen'able for an extended leak test interval. The provisions of 10 CFR 32.51(b) describe the information that you must f
supply.
Regarding the designation of 'Kay Ray Model 7700"in your request, please note that Registration Certificate No. IL-412-S-128-S specifies the sourco series with the designation l-
- 7700-Y' only (where the "Y" denotes source activity in millicuries) which have been approved m7 9711040019 971031 F
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2 Mr. Earl. M. Pollock
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N.aby the'U.S. Nuclear Regulatory Cc.mmission or the Illinois Department of Nuclear Safety. We
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i i understand that your application intends to refer to the 'Y' series sources. If your i
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understanding is different, please let us know.
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Iif you have any questions, please contact me at (301) 415 7904 or Mr. Steven Baggett at
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- (301)415-7273.
Sincerely,
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' John P. Jan!.ovich, Ph.D., Sr. Engineer
. Sealed Source Safety Section Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards Distribution:
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