ML20107J759
| ML20107J759 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 01/28/1985 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-37), (NMP2L-0331), (NMP2L-331), NUDOCS 8502270683 | |
| Download: ML20107J759 (2) | |
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M Y NIAGARA R UMOHAWK NBAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE, N.Y.13202/ TELEPHONE (315) 474-1511 January 28, 1985 (NMP2L 0331)
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 the post-weld heat treatment qualification of angle valves in the feedwater system.
This problem was reported via tel-con to S. Collins of your staff on September 7,1984.
An interim report was submitted via our letter dated October 9,1984 Very truly yours, C. V. Mangan Vice President Nuclear Engineering and Licensing i~
CVM/GG:csb (0691H) l xc: Director of Inspection and Enforcement l
l U. S. Nuclear Regulatory Commission l
Washington, DC 20555-R. A. Gramm, NRC Resident Inspector Project File (2) r 8502270683 850128~
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d NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT - UNIT 2 DOCKET NO 50-410 Final Report for a Problem Concerning Post Weld Heat Treatment Qualification of Feedwater System Angle Valves (55(e)-84-37)
Description of the Problem The problem pertains to the ~ Post Weld Heat Treatment qualification of angle valves, Mark Nos. 2FWS*HCV54A and.B. in the feedwater system.
These are ASME Class 1 valves.
The certified material test reports provided by the valve manufacturer,- Atwood and Morrill Co.,.Inc., did not document the temperature of the simulated post weld heat treatment of the test coupons -for the valve bodies.
In addition, the weld material post weld heat treatment qualification was performed for a shorter duration than the production post weld heat treatment of the valve.
Analysis of Safety Implications Quaker Alloy Casting Co. has provided additional certification that has been reviewed and approved by Atwood & Morrill and the ANI for use in the
' - documentation packages of valves, Mark Nos. 2FWS*HCV54A and B.
Since. the materials were certifiable, the valves are acceptable and could not have adversely affected the safety of operation of the plant.
Therefore, the criteria for reportability have not been met.