ML20100C346
| ML20100C346 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 02/28/1985 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-22), (NMP2L-0353), (NMP2L-353), NUDOCS 8503290008 | |
| Download: ML20100C346 (2) | |
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NIAGARA 000 HAWK POWER CORPORAT10N/300 ERIE BOULEVARD WEST SYRACUSE, N.Y.13202/ TELEPHONE (315) 474-1511 February 28, 1985 (NMP2L 0353)
Mr. R. W. Starostecki, Director U. S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs i
631 Park Avenue King of Prussia, PA 19406 i
i Re: Nine Mile Point - Unit 2 Docket No. 50-410 1
Dear Mr. Starostecki:
Enclosed is a final report in accordance with 10CFR50.55(e) for the problem concerning feedwater valves furnished by Velan Valve Corporation.
This problem was reported to W. Lazarus of your staff on June 13, 1984.
An interim 1
report was submitted via our letter dated July 6,1984.
4 Very truly yours, C. V..Mangan Vice President Nuclear Engineering and Licensing CVM/GG:cla (0781H) xc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission i
Washington, DC 20555 R. A. Gramm, NRC Resident Inspector Project File (2) 8503290008 850228 PDR ADOCK 05000410-S PDR f
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6, NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT UNIT 2 DOCKET N0. 50-410 Final Repert for a Problem Concerning Velan Valves - Feedwater System (55(e)-84-22)
Description of the Problem During a review of the documentation for two valves, Mark Nos. 2FWS*MOV21A and B, it was observed that the certified material test reports provided by the valve manufacturer did not document the test coupon heat treatment duration and temperature as required by ASME Section III, NB-2211. Further inquiry revealed that the heat treatment of the test coupons was in fact not performed. The material used in the manufacture of the valve bodies is documented as SA-105.
One test coupon was removed from each valve body and was tested after the required heat treatment. The test coupon from valve 2FWS*MOV218 provided satisfactory results, but the results from the other coupon showed lower elongation than is acceptable for SA-105. However, a review of material 4
properties and test results for coupon from valve 2FWS*MOV21A indicates that these conform to SA-181, Class 70, and this material is suitable for the valve. Therefore, the certified material test report for this valve has been revised to change the material from SA-105 to SA-181, Class 70.
Analysis of Safety Implications From the above, it is evident that had this condition remained uncorrected, it could not have adversely affected the safety of operations of the plant.
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