ML18040A255

Forwards Approved Rept, Analysis of Nine Mile Point Unit 1 Shroud Weld V9 & Weld V10 Cracking, for Review,In Response to GL 94-03 & 970408 Ltr Submitting Insp Results

ML18040A255
Person / Time
Site:	Nine Mile Point
Issue date:	04/11/1997
From:	Mccormick M NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17059B506	List: ML17059B505 ML17059B507 ML18040A255
References
GL-94-03, GL-94-3, NMP1L-1203, NUDOCS 9704250251
Download: ML18040A255 (7)

Text

CATEGORY 1 REGULAT( INFORMATION DISTRIBUTIONSTEM (RIDS)

ACCESSiON NBR:9704250251 DOC.DATE: 97/04/ll NOTARIZED: NO DOCKET FACIL:$0-220 Nine Mile Point Nuclear Station, Unit .1, Niagara Powe 05000220 AUTH. NAME AUTHOR AFFILIATION MCCORMICK,M.J. Niagara Mohawk Power Corp; F~r RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk) A

SUBJECT:

Forwards approved rept, "Analysis of Nine Mile Point Unit 1 Shroud Weld Cracking," for review.

DISTRIBUTION CODE: A018D COPIES RECEIVED:LTR J ENCL i SIZE: 2 + IM TITLE: GL 94-03 Intergranular Stress Corrosion Cracking of Core Shrouds in B NOTES:

RECIPIENT COPIES RECIPIENT COPIES E ID CODE/NAME LTTR ENCL ID .CODE/NAME LTTR ENCL HOOD,D 1 1 INTERNAL: CENTER 01 1 1 NRR/DE/EMCB 1 1 P

N 1 1 NRR/DRPM/PECB 1 1 NRR/DSSA/SRXB 1 1 RES/DET/EMMEB 1 1 EXTERNAL: NRC PDR 1 1 D

E N

NOTE TO ALL MRIDS" RECZPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 8 ENCL 8

P N k R

t I

NIAGARA MOHAWK G E N E RAT I 0 N NINE MILE POINT NUCLEAR STATION/LAKEROAD, P O. BOX 63, LYCOMING. NEW YORK 13093/TELEPHONE (315) 349 2660 FAX (315) 349-2605 BUSINESS GROUP MARTINJ. McCORMICK JR. P.E.

Vice President Nuciear Engineering April 11, 1997 NMP1L 1203 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE: Nine Mile Point Unit 1 Docket No. 50-220

Subject:

Generic Letter 94-03 "Intergranular Stress Corrosion Cracking (IGSCC) in Boiling Water Reactors" Gentlemen:

By letter (NMP1L 1200) dated April 8, 1997, Niagara Mohawk Power Corporation (NMPC) submitted to the NRC Staff the inspection results for the Nine Mile Point Unit 1 (NMP1) core shroud and a description of the proposed modification to the tie rod repairs previously installed. Enclosure 3 of that submittal made reference to a technical report that evaluates stress profiles for NMP1 core shroud vertical welds V9 and V10, which was prepared for NMPC by MPM Technologies. At the time of the submittal, the report was still preliminary and had not yet been approved. Contained herein is the approved report titled "Analysis of Nine Mile Point Unit 1 Shroud Weld Cracking," for your review.

Very truly yours, Martin . McCormick Jr.

Vice President - Nuclear Engineering MJM/KLL/lmc Enclosure xc: Mr. H. J. Miller, NRC Regional Administrator, Region I QQlF I Mr. S. S. Bajwa, Acting Director, Project Directorate I-l, NRR Mr. B. S. Norris, Senior Resident Inspector Mr. D. S. Hood, Senior Project Manager, NRR IIII3ll3lllllllllll)ll'HllllflllIIIIIIIlllll Records Management 970425025i 9704ii Poa *DoCX 0500022O '..

PDR

UNITED STATES NUCLEAR REGULATORY COMMISSION In the Matter of Niagara Mohawk Power Corporation Docket No. 50-220 Nine Mile Point Unit 1 Martin J. McCormick Jr., being duly sworn, states that he is Vice President - Nuclear Engineering of Niagara Mohawk Power Corporation; that he is authorized on the part of said Corporation to sign and file with the Nuclear Regulatory Commission the document attached hereto; and that the document is true and correct to the best of his knowledge, information and belief.

Martin J. McCormick Jr.

Vice President '- Nuclear Engineering Subscribed and sworn before me, in and for the State of New York and the County of e this ~~>~ day of April, 97.

NOTARY PUBLIC

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. Report No. MPM-497439 Final Report entitled Analysis of Nine Mile Point Unit 1 Shroud Weld V9 and Weld Vlo Cracking Prepared for:

tlag Mh kP ~C 300 Erie Boulevard West Syracuse, New York 13202 by:

Dr: M: P.'Manahan, Sr.

and Dr. R. B. Stonesifer under contract to:

MPM Technologies, Inc.

P.O. Box 840, 915 Pike Street Lemont, PA 16851-0840 April, 1997 CCopyright l 997 MPM Technologies, inc.

All Rights Reserved

..9704250251