ML18219D948
| ML18219D948 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 05/17/1977 |
| From: | Tillinghast J Indiana Michigan Power Co, (Formerly Indiana & Michigan Power Co) |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18219D948 (6) | |
Text
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".IRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL U.S. NUCLEAR GULATORYCOMMISSION FR t
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ILE 880 Mr Edson G. 'Case
'Indiana G Mich Power Co.
'ew'.York, N. Y.
'10004 John Tilligghast OATE OF OOCUMENT 05-17-77 OATE RECEIVED 05-20-77
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. I/,ei6<CQ PESCRIPTION Notorized 05-17-77...Ref Karl Kniel's 04-11-77 ltr...Advising requested'nfo.
concern instruIIIent trip setpoint values is TIot availabl
. and considerable time and effort pill be requi to 'provide this info', and. reques't withdrawal'or request of this subject info for either Unit i o
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INDIANA Ia MICHIGAN POWER COMPANY P. O. BOX 18 BOWLING GREEN STATION NEW YORK, N. Y. 10004 May 17, 1977 Donald C. Cook Nuclear Plant Unit Nos.
1 & 2 Docket Nos.
50-315 and 50-316 DPR No.
58 CPPR No.
61 Mr. Edson G. Case, Acting Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
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Dear Mr. Case:
We have reviewed Mr. Karl Kniel's letter of April ll, 1977 requesting further information regarding instrument trip setpoint values.
Our discussions with Westinghouse Electric Corporation regarding this request have revealed that the information is not currently available, and considerable time and effort will be required to provide this information.
The reason which you cite in your letter for xequesting this information is the large number of Licensee Event Reports (LER's) related to instrument setpoint drift beyond the limits permitted by facility technical specifications.
Our experience at Donald C.
Cook Nuclear Plant, Unit. No.
1 has been that we have had very few such LER's.
In fact, we have only had 7 in the over two and one half years since the operating license was received in October 1974.
Further, it is our judgment that the information you are requesting would not be cost effective in terms of the potential benefits either for improved operation or reduction in LER's at the Cook Nuclear Plant.
The extensive cost and effort involved in obtaining the information cannot be justified in terms of the mar-ginal benefits in improving the already adequate licensing margins 77l410006 I
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..Mx;..Edson G. Case May 17, 1977 required to safeguard the health and safety of the public.
As a result<,",ofour review,,',unless there are other considerations having significant safety advantages, we ask that you withdraw the request for the subject information for either unit of the Donald C. Cook Nuclear plant.
Very truly yours, n
a t Vice Presiden JT:mam Sworn and subscribed to before me on this I"I day of May 1977 in New York County, New York Notary P ic GRhGORY Ll. GURICAif Notary Public. State of fiew Yoitr fio. 31-4643431 Qualified In Ifow York County Commission Expires ftarch 30, 19Xf~
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