ML19209B533

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Notifies That Response to Requirements of IE Bulletin 79-07 Is Satisfactory for Resumption of Power Operation.Completion of Computer Code Verification Required.Safety Evaluation Encl
ML19209B533
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 06/19/1979
From: Ippolito T
Office of Nuclear Reactor Regulation
To: Dise D
Office of Nuclear Reactor Regulation
Shared Package
ML18136A035 List:
References
NUDOCS 7910100076
Download: ML19209B533 (2)


Text

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ket No. 50-220 Mr. Donald P. Dise Vice President - Engineering Niagara Mohawk Power Corporation 300 Erie Boulevard West Syracuse, New York 13202

Dear Mr. Dise:

The Commission has evaluated your response to Inspection and Enforcement Bulletin 79-07 as it af#ects the Nine Mile Point Unit 1 Nuclear Power Plant. Bulletin 79-07 requested the identification of system designs for which an incorrect pioing design code was utilized. By letters dated April 25, 1979 and June 12, 1979 you provided the documentation which identified the extent of the problem as well as the details of the reanalysis effort. We have concluded that the requirements of Bulletin 79-07 have been adequately satisfied to allow resumption of power operation. This is blsed on the fact that the reanalysis was conducted using computer programs exploying accept-able seismic response combination techniques, and that the results of the reanalysis have been within the allowable limits. Please note that a final . finding of compliance with the provisions of Bulletin 79-07 will require canpletion of computer code verification. By letter dated June 13,1979 you committed to providing the nr.cessary information for this effort. A copy of our evaluation addressing this matter is enclosed. Sincer,el, ' ; J n-e as A. Ip lito, Chief 7 Op ratino R actors Branch #3 ~ Division c Operating Reactors E.ncl :s tre: E. al uati on ./e.c :s;re:

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2-Mr. Donald P. Dise cc: Eugene B. Thomas, Jr., Esquire LeSoeuf, Lamb, Ldiby & MacRae 1757 N Street, N. W. Washington, D. C. 20036 Anthony Z, Roisman Natural Resources Defense Council 917 15th Street, N. W. Washington, D. C. 20005 Oswego County.0ffice Building 46 E. Bridge Street Oswego., New York 13126 3 4 y

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