ML20137B507
| ML20137B507 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 12/20/1985 |
| From: | Lempges T NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)85-25), (NMP2L-0567), (NMP2L-567), NUDOCS 8601150459 | |
| Download: ML20137B507 (2) | |
Text
L N3Nainit NIAGARA WJHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST. SYRACUSE. N.Y.13202/ TELEPHONE (315) 474-1511 December 20, 1985 (NMP2L 0567)
Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is a final report in accordance with 10CFR50.55(e) for the problem concerning Velan valve 2 MSS *M0Vll2 body material qualification. This problem was reported via telecon to J. Linville of your staff on July 30, 1985, and an interim report was submitted on August 29, 1985.
Very truly yours,
[
T. E. Lempges Vice President Nuclear Generation TEL/GG:ja Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Comission Washington, DC 20555 R. A. Gramm, Resident Inspector Project File (2) 8601150459 851220 T
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t NIAGARA M0 HANK POWER CORPORATION NINE MILE POINT UNIT 2 DOCKET NO. 50-410 Final Report for a Problem Concerning Velan Valve 2 MSS *MOVll2 Body Material Qualification (55(e)85-25)
Description of the Problem During a review of documentation, it was observed that the certified material test report provided by the valve manufacturer did not document the test coupon heat treatment duration and temperature as required by ASME Section III, NB-2211.
Problem Solution A separate test forging has been located that has the same heat and lot number as the valve body. Heat treatment and tensile testing of test coupons have been performed and evaluated, and the results were satisfactory.
Analysis of Safety Implication The certified material test report for-the valve body forging was resubmitted indicating the post-weld heat treatment was perforned in accordance with ASME III, NB-2211 and providing the results of the tensile tests.
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