ML20211N863

Withdraws 970814 Request for Exemption from 10CFR50,App R,Section III.G.2, Fire Protection of Safe Shutdown Capabilities

ML20211N863
Person / Time
Site:	Prairie Island
Issue date:	09/07/1999
From:	Sorensen J NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9909130090
Download: ML20211N863 (2)

Text

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Northern States Power Company Prairie Island Nuclear Generating Plant 1717 Wakonade Dr. East Welch. Minnesota $5089 September 7,1999 10 CFR 50, Appendix R U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Withdrawal of Request for Exemption from 10 CFR Part 50, Appendix R, Section Ill.G.2, " Fire Protection of Safe Shutdown Capabilities" By letter dated August 14,1997 (supplemented by letter dated April 16,1998 and by Response to Request for Additional Information (RAl) dated November 2,1998),

Northern States Power Company (NSP) requested exemptions from the technical requirements of Section Ill.G.2 of Appendix R to Title 10 of the Code of Federal Reaulations, Part 50, to the extent that:

. Section Ill.G.2.c specifies the enclosure of cable and equipment and associated non-safety circuits of one redundant train in a fire barrier having a 1-hour rating, and

. Section Ill.G.2.f specifies separation of cables and equipment and associated non-safety circuits of redundant trains (in non-inerted containments) by a noncombustible radiant energy shield.

In lieu of enclosure of cables in a 1-hour barrier and in lieu of employing radiant energy shields in containment, NSP proposed to use fire-rated cables.

I By letter dated August 12,1999, the NRC again requested additional information, 0 y

Sirce developing a response to the August 12,1999, RAI would require an extended y period of time, the NRC has indicated an application to withdraw the exemption request 1 3 '" "'

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, September 7,1999 Page 2 would be acceptable, with the understanding that NSP would resubmit the exemption request upon completion of the response to the RAl.

By this letter NSP withdraws the August 14,1997, Request for Exemption from 10 CFR Part 50, Appendix R, Section Ill.G.2. NSP will review the RAI questions, but may not address them. For example, if we decide to wrap the affected cables with an approved 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> barrier instead of resubmitting the exemption request, we will not address the RAI questions, if NSP does decide to resubmit the request for exemption, the RAI questions will be addressed in the new submittal (in this case, a new exemption request i could be expected by April 29,2000.)

In this letter we have made no new Nuclear Regulatory Commission commitments.

Please contact Jeff Kivi (651-388-1121) if you have any questions related to this letter.

Joel P. Sorensen -

Site General Manager Prairie Island Nuclear Generating Plant c: Regional Administrator - Region Ill, NRC Senior Resident inspector, NRC NRR Project Manager, NRC J E Silberg l

rockbestos exemption request withdrawal. DOC

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