ML20133H851
| ML20133H851 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 07/19/1985 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-51), (NMP2L-0450), (NMP2L-450), NUDOCS 8508090539 | |
| Download: ML20133H851 (2) | |
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NUMOHAWK Y NIAGARA NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST. SYRACUSE, N Y.13202/ TELEPHONE (315) 4741511 July 19, 1985 (NMP2L 0450) i l
Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Reactor Projects 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 use of nonblunt-nosed stencils on ASME III materials.
This problem was reported via tel-con to R.
A.
Gramm, NRC Resident Inspector, on November 16, 1984. A interim report was submitted on December 17, 1984.
Very truly yours, C
Vice President
[
Nuclear Engineering and Licensing CVM/GG/cla (1087H) xc: Director of Inspection and Enfort:ement U.S. Nuclear Regulatory Commission Washington, DC 20555 R. A. Gramm, NRC Senior Resident Inspector Project File (2) 8508090539 850719 PDR ADOCK 05000410 r
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NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT - UNIT 2 DOCKET NO. 50-410 Final Report for a Problem Concerning Use of Nonblunt-nosed Stencils on ASME III Materials (55(e)-84-51 )
Description of the Problem Initially Niagara Mohawk determined that the use of non-approved tools for the application of permanent marking to ASME material had occurred.
As a result of inspections perfomed on ASME Class 1 piping and the break exclusion area (which includes some Class 2 piping), it was detemined that confomance with code requirements for marking has been achieved with one exception.
This exception consisted of certain characters stenciled into a Class 2 fitting located in the break exclusion area of the reactor core isolation cooling system.
Analysis of Safety Implications No calculation was perfomed to establish whether the presence of such markings in their specific location on this particular fitting would have violated design integrity; however, it is conservatively assumed that there would be a potential effect on the safety of operations of the plant had the condition remained uncorrected.
l Corrective Action The nonconforming stenciled characters will be removed by grinding.
After reinspection to assure minimum wall thickness and integrity, the stencil will be re-applied in accordance with Nonconfomance and Disposition Report
- 11667. The corrective action will be completed by August 1,1985.
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