ML17055B045

Forwards Rev 1 to High Energy Line Break Evaluation Rept (Effect on Nonsafety-Related Control Components). Rev Addresses Findings of Planned Walkdown & Closes SER Confirmatory Issue 27.Affidavit Also Encl

ML17055B045
Person / Time
Site:	Nine Mile Point
Issue date:	01/02/1986
From:	Mangan C NIAGARA MOHAWK POWER CORP.
To:	Adensam E Office of Nuclear Reactor Regulation
Shared Package
ML17055B046	List: ML17055B045 ML18038A113
References
(NMP2L-0574), (NMP2L-574), NUDOCS 8601140096
Download: ML17055B045 (6)

Text

REGULATORY ORNa",T ION DISTRIBUTION SY N < I R DS )

ACCESSION NBR: 8601 1 40096 DOC. DATE: 86/01/02 NQTAR IZED: YES DOCKET 0 FAC I).: 50-410 Nine Nile Point Nuclear Statidni Unit 2I Niagara Noha 05000410 AUTH. NANE AUTHOR AFF ILIATIQN NANG4NII C. V. Niagara I"lohal2Jk Power Corp.

REC IP. MANE I I EM1'FF I LIATION REC P ADENSANI E. G. BWR Pr o ject Directorate 3 s<e

SUBJECT:

ForuJards Rev f to "High Energy Line Break Evaluation Rept (Effect on Nonsafetg-Related Control Conponents)." Rev addresses findings of. planned walkdown 5 closes SER confirmatory Issue 27. Affidavit also encl.

DIsTRIBUTIDr1 cDDE: 130010 cDPIEE REGEIvED: LTR g Er<GL w EIIE: 4 + ~OO TITLF: File Location Distribution: Docket 50 NOTES:

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V MIIAISAIR U MOoHANK 474-1511 NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARO WEST, SYRACUSE, N.Y. 13202/TELEPHONE (315)

January 2, 1986 (NMP2L 0574)

Ms. Elinor G. Adensam, Director BWR Project Directorate No. 3 U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Washington, DC 20555

Dear Ns. Adensam:

Re: Nine Nile Point Unit 2 Docket No. 50-410 Enclosed are ten copies of the NMP2 High Energy Line Break Evaluation Report (Effect on Nonsafety-Related Control Components), Revision 1, dated December ll, 19S5. This revision supercedes Revision 0, dated October 30, 1985, submitted to Dr. Walter Butler, Chief, Licensing Branch No. 2, on November 19, 19S5.

In my letter of November 19, 1985 accompanying the report, it was stated that a high energy line break in the turbine building had been identified that could result in a feedwater temperature reduction transient more severe than that analyzed in Chapter 15 of the Final Safety Analysis Report. The evaluation of that event has been completed and, as reported on page 3-11 of Revision 1, it shows that the event is bounded by Section 15.1.1 of the FSAR.

The planned walkdown mentioned in my earlier letter has been completed and the resultant findings have been addressed in this revision.

We believe this closes Safety 'Evaluation Report Confirmatory Issue No. 27.

Very truly yours, gbOii4009b abOi0410 O>O pDR ADOCK C. V. Mangan Senior Vice President RAC/rla 1161G Encl osure gaol xc: R. A. Gramm, NRC Resident Inspector Project File (2)

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of )

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Niagara Mohawk Power Corporation ) Docket No. 50-410

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(Nine Mile Point Unit 2)

AFF IDAYIT C. V. Mangan , being duly sworn, states that he is Yice President o N>agara o aw ower orpor ation; that he is authorized on the part of said Corporation to sign and file with the Nuclear Regulatory Commission the documents attached hereto; and that. all such documents are true'nd correct to the best of his knowledge, information and belief.

Subscribed and sworn to befor e me, a Notary Public in and for the State of New York and County of , this 2+ day of ~ 1986.

Notary ub sc >n and or County, New York My Commission expires:

CHRISTINE AUSTIN of New York Notary Public in the State ualihed rn Onondaga Co. No. 47B768g

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