ML20079M856

Final Deficiency Rept Re Control Bldg Control & Computer Room Drywall Partition Walls Not Designed for Seismic Loads.Initially Reported on 831208.Drywall Partitions Redesigned to Withstand Seismic Loads

ML20079M856
Person / Time
Site:	Nine Mile Point
Issue date:	01/09/1984
From:	Manno S NIAGARA MOHAWK POWER CORP.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
7921, NUDOCS 8401270449
Download: ML20079M856 (2)

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M Y NIAGARA R UMOHAWK NIAGARA 100 HAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE. N.Y,13202/ TELEPHONE (315) 4741511

., SAMUEL. F. MANNO VICE PRESIDENT NUCLEAR CONSTRUCTION danuary 9, 1934 (7921)

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 drywall partition walls forming the control room and computer room inside the control building.

This problem was reported via telecon to Mr. R. Gallo of your staff on December 8, 1983.

Very truly yours, s f f%w

.F Manno SFM/TL:ja Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. R. Gram, Resident Inspector 8401270449 840109 DR ADOCK 05000

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DOCKET N0. 50-410 4

Final Report'for a Problem Concerning the Partition Walls Forming the Control Room' and Computer Room Description of the Problem The drywall partition walls forming the control room and computer room inside the control building were not designed for seismic loads.

There are some safety-related components located in the vicinity of these walls.

Analysis of Safety Implications Since the drywall partitions were not designed for seismic loads, their

integrity could not be assured during a seismic event.

The effect of the failure of these partitions on the safety-related components in their vicinity would depend on the extent and nature of such a failure.

A detailed analysis of safety implications has not been performed.

However, to eliminate the possibility of failure of the partitions, the corrective action outlined below has been-taken.

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Corrective Action The drywall' partitions have been redesigned to withstand seismic loads.

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