IR 05000523/2006028

Notice of Deviation from Insp on 850523-0628

ML20133G845
Person / Time
Site:	Beaver Valley, Skagit
Issue date:	07/18/1985
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
Shared Package
ML20133G825	List: IR 05000412/1985013 IR 05000523/2006028 ML20133G821 ML20133G834
References
50-412-85-13, NUDOCS 8508090092
Download: ML20133G845 (1)

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APPENDIX B NOTICE OF DEVIATION Duquesne Light Company Docket No. 50-412 Beaver Valley Power Station, Unit 2 License No. CPPR-105 As a result of the inspection conducted on May 23 - June 28, 1985, and in accor-dance with the NRC Enforcement Policy (10 CFR 2, Appendix C), published in the Federal Register on March 8, 1984 (49 FR 8583), the following deviation was iden-tified:

In the Final Safety Analysis Report, the licensee committed to implement Regulatory Guide 1.29 (RG 1.29), " Seismic Design Classification." RG 1.29 requires those structures whose failure could reduce the functioning of Seis-mic Category I systems to an unacceptable safety level to be designed and constructed such that the Safe Shutdown Earthquake (SSE) would not cause such failur Contrary to the above, as of May 29, 1985, the structural members and supports within the stair enclosure at the 781' to 805' elevations adjacent to the Main Steam and Cable Vault area were not designed such that the SSE would not cause failur Their failure could reduce the functioning of the Seismic Category I Service Water System (SWS) to an unacceptable safety level in that SWS lines 2-SWS-004-762-3, 2-SWS-004-773-3, 2-SWS-004-768-3, and 2-SWS-004-763-3, as shown on isometric drawings 101937, 101939, 101942, and 101944, are run through this are This is a deviation from commitment No further response to this deviation is required since calculations were performed prior to the end of this inspection that demonstrated that the existing stairs at this location could withstand a seismic event without affecting the SWS pipin Licensee walkdowns of other stair enclosures identified no other similar problem _

0FFICI AL RECORD CCFY 8508090092 B50718 PDR ADOCK 05000412 G PDR