ML20054F084
| ML20054F084 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/06/1982 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20054F075 | List: |
| References | |
| 5211-82-108, NUDOCS 8206150202 | |
| Download: ML20054F084 (1) | |
Text
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I GPU Nuclear Corporation 2
8 JUN E62 cc:
R. J. Toole, Operations and Maintenance Director, TMI-1 C. W. Smyth, Supervisor, TMI-1 Licensing E. G. Wallace, Manager, PWR Licensing J. B. Liberman, Esquire G. F. Trowbridge, Esquire Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector Commonwealth of Pennsylvania Ms. Mary V. Southard, Co-Chairman, Citizens for a Safe Environment I
(Without Raport) bec:
Region I Docket Room (With concurrences)
L. Barrett, Deputy Program Director, TMI Program Office J. Goldberg, OELD: HQ Chief, Reactor Projects Branch #2 T. Moslak, TMI Resident Office l
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I GPU Nuclear NUC Mr P.(1 Box 480 Middletown, Pennsylvan.ia 17057 717-944-7621 I
Writer's Direct Dial Number.
May 6,1982 5211-82-108 Office of Inspection and Enforcement Attn:
R. C. Haynes, Regional Administrator Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Health Physics Evaluation By letter dated April 28, 1981 (L1L 129) Met-Ed/GPU provided a status of actions taken in response to Unit 1 Health Physics Appraisal item 80-22-36 involving the development of representative counting source to be used in determining efficiencies for Radiological Controls counting equipment.
This letter provides the final follow-up response to the appraisal item.
In November, 1981, a meeting was held with NBS representatives to identify the most appropriate method of certifying representative counting sources.
NLS recommended that actual air samples be collected from both units and certified with a similar source obtained from NBS, thereby providing trace-ability to NBS.
Numerous air samples were obtained and calibrated against the NBS source as recommended. Based on these data, it has been determined that an absolute efficiency of 15% should be established for the Ludlum 2000/HP-210 counting equipment. For the gas flow proportional counter, it has been determined that an efficiency of 60% should be used based on the same data. The applicable procedures have been revised to impicment these efficiencies.
The results of the tests performed have been documented and are available for review by the NRC.
Sincerely, H. D.
lukill Director, TMI-1 HDH:WEP:vj f cc:
D. Haverkamp GPU Nuclear is a part of the General Public Utihties System
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