ML20066J146

Interim Deficiency Rept Re Error in Ghosh Computer Program Stiffness Calculation for Triangular Solid Finite Elements. Initially Reported on 821008.Error Corrected.Next Rept Will Be Submitted by 830215

ML20066J146
Person / Time
Site:	Nine Mile Point
Issue date:	11/05/1982
From:	Mangan C NIAGARA MOHAWK POWER CORP.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8211230450
Download: ML20066J146 (2)

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Y NIAGARA NuMOHAWK NIAGARA MOHAWK POWER COMPORATION/300 ERIE BoVLEVARo WEST, SYRACUSE. N.Y.13202/ TELEPHONE (315) 4741511 November 5,1982 Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region 1 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 an interim 30 day report in accordance with 10CFR50.55(e) for the potentially reportable deficiency concerning an error in the GHOSH computer program. This condition was reported via telecon with Mr. H. Kister of your staff on October 8,1982, as a potentially reportable deficiency.

Very truly yours, NIAGARA M0 HAWK POWER CORPORATION MM 6tA C. V. Mangan, ice President Nuclear Engineering & Licensing

/djm Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. R. D. Schulz, Resident Inspector 8211230450 821105 gDR ADOCK 05000 g

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NIAGARA M0 HAWK POWER CORPORATION Nine Mile Point Unit 2 Docket No. 50-410 Interim Report for a'Potentially Reportable Deficiency Under

10CFR50.55(e) Regarding GHOSH Program i

j Description of the Deficiency An error was found in the GHOSH computer program that was originally purchased through the U.S. Government listing service (National Technical Information Service). The error discovered was in the calculation of stiffness for triangular solid finite elements. This program has been used for the hydrodynamic analysis of the primary and secondary containments. The error was found in the original purchased program and is not a result of any modification to the program.

The error in the program has since been correctea. ine linpact of the problem

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on the work performed earlier is still being evaluated. A final report will be submitted by February 15, 1983.

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