ML20206S686

Forwards Safety Evaluation & Technical Evaluation Rept on Util 850426 Response to Open Items Re Generic Ltr 81-14, Seismic Qualification of Auxiliary Feedwater Sys. Addl Info Requested Re Diesel Generator Room Flooding

ML20206S686
Person / Time
Site:	Point Beach
Issue date:	09/16/1986
From:	Colburn T Office of Nuclear Reactor Regulation
To:	Fay C WISCONSIN ELECTRIC POWER CO.
Shared Package
ML20206S689	List: ML20206S686 ML20206S709 ML20206S749
References
GL-81-14, TAC-43669, TAC-43670, NUDOCS 8609220332
Download: ML20206S686 (4)

Text

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SEP 101986 ,

Docket Nos. 50-266 and 50-301 Mr. C. W. Fay, Vice President Nuclear Power Department 4 Wisconsin Electric Power Company 231 W. Michigan Street, Room 308 Milwaukee, Wisconsin 53201

SUBJECT:

SEISMICQUAOFICATIONOFTHEAUXILIARYFEEDWATERSYSTEMAT POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 -

On February 10, 1981, the NRC staff issued Generic Letter 81-14. Seismic Qualification of Auxiliary Feedwater Systems, to all operating Pressurized Water Reactor licensees. You responded to Generic Letter 81-14 by letters dated July 16, 1981, May 4 and December 15, 1982, February 11- 1983, January.

31 and December 4,1984. The staff completed its initial review of your responses on January 16, 1985. In that letter the staff transmitted our initial status report and Technical Evaluation Report (TER) from our '

contractor Lawrence Livermore National Laboratory. The staff's status report noted deficiencies with regard to the information supplied relating to Auxiliary Feedwater System power supplies, water sources, structures and initiation / control systems.

On March 28, 1985, a meeting was held to discuss the open items in the staff's. status report. Your April 26, 1985 letter provided a summary of your responses to NRC staff comments relating to the open items. Your responses-adequately addressed all open items except: (1) the potential failure of the non-seismic generator room condensate storage roof (impact on the tanks andgenerators) diesel subsequentand flooding)of the diesel (2 the potential for failure of the facade structures around the Unit 1 and 2 containments.

Members of the staff and our consultant, Brookhaven National Laboratory, conducted a site and corporate office visit on November 20, 1985 to obtain additional information related to these remaining concerns. The staff's findings are contained in the enclosed Safety Evaluation (SE) and attached TER.

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o Our SE addresses all concerns and open items identified in our January 16, 1985 status report.

In response to a concern that flooding of the diesel generator room roof from the condensate storage tanks could introduce water into-the diesel generator room and subsequently onto the diesel generator control panels via the ceiling air intake, members of your staff have indicated that modifications are currently. underway to protect the control panels and address this concern.

As discussed with and agreed.to by your staff, we request that you notify us when these modifications are complete and include a confirmatory analysis showing how these modifications address the: staff's concern.

The' reporting and/or recordkeeping requirements ~ contained in this letter affect fewer than ten respondents, therefore, OMB clearance is not required under P.L.96-511.

If you have any questions, please contact me at (301) 492-9787.-

Sincerely,

/s)

Timothy G. Colburn, Project Manager

Project Directorate #1 Division of PWR Licensing-A

Enclosure:

-Safety Evaluation with attached Technical Evaluation Report cc's: See Next Page 1

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( Date: <D9/ /86' 09/l4/86 09//f/86 1.

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Mr. C. W. Fay- Point Beach Nuclear Plant Wisconsin Electric Power Company Units 1 ard 2 cc:

Mr. Bruce Churchill, Esq.

Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.

Washington, DC 20036 Mr. James J. Zach, Manager Point Beach Nuclear Plant Wisconsin Electric Power Company 6610 Nuclear Road Two Rivers, Wisconsin 54241 Mr. Gordon Blaha Town Chairman Town of Two Creeks Route 3 Two Rivers, Wisconsin 54241 Chairman Public Service Commission of Wisconsin Hills Farms State Office. Building Madison, Wisconsin 53702 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 799 Roosevelt Road Glen Ellyn, Illinois 60137 Resident Inspector's Office U.S. Nuclear Regulatory Commission 6612 Nuclear Road Two Rivers, Wisconsin 54241 e

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