ML050960137

Summary of Meeting with Energy Northwest on the Risk-Informed Diesel Generator Allowed Completion Time Extension

ML050960137
Person / Time
Site:	Columbia
Issue date:	04/18/2005
From:	Brian Benney NRC/NRR/DLPM/LPD4
To:
Benney B, NRR/DLPM, 415-3764
Shared Package
ML050960231	List: ML050960137
References
TAC MC3203
Download: ML050960137 (4)

Text

LICENSEE: Energy Northwest FACILITY: Columbia Generating Station

SUMMARY

OF MARCH 11, 2005, MEETING WITH ENERGY NORTHWEST ON THE RISK-INFORMED DIESEL GENERATOR ALLOWED COMPLETION TIME EXTENSION (TAC NO. MC3203)

On March 11, 2005, representatives of Energy Northwest met with the Nuclear Regulatory Commission (NRC) staff to discuss the risk-informed diesel generator allowed completion time extension.

Energy Northwest outlined the new design since the last phone call and reviewed their draft responses to the NRC staff questions. The NRC staff indicated concerns with differences between Energy Northwest's submittal and that approved for River Bend Station. Energy Northwest explained that they cannot match River Bend's response exactly due to differences in the design and in their docketed station blackout response. Meeting the risk and deterministic concerns also led them to this new approach. The NRC staff questioned, from a deterministic standpoint, that the battery capacity can be extended from 4 to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> without revising the station blackout analysis which was done for only 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (condensate water inventory and heat loads in the pump rooms, switchgear and battery rooms).

Energy Northwest commented that they will revise their responses to address the staff's concerns, comments and questions. The NRC staff stated that follow up communication will be required once the design is complete, so that open issues can be resolved. Finally, Energy Northwest discussed the proposed schedule for completion of the design. Energy Northwest was appreciative of the staff's feedback. The meeting concluded with the staff expressing their appreciation for the presentation.

An attendance list is enclosed.

Brian Benney, Project Manager, Section 2 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-397

Enclosure:

Meeting Attendees cc w/encl: See next page

ML050960137 NRC-001 OFFICE PDIV-2/PM PDIV-2/LA PDIV-2/SC NAME BBenney: JF LFeizollahi RGramm DATE 4/07/05 DOCUMENT NAME: E:\Filenet\ML050960137.wpd MEETING WITH ENERGY NORTHWEST March 11, 2005 ATTENDANCE LIST ENERGY NORTHWEST D. Coleman G. Cullen M. Rice D. Rhoads A. Chaing NRC B. Benney O. Chopra B. Tjader C. Doutt T. Ford

Columbia Generating Station cc:

Mr. W. Scott Oxenford (Mail Drop PE04) Mr. Dale K. Atkinson (Mail Drop PE08)

Vice President, Technical Services Vice President, Nuclear Generation Energy Northwest Energy Northwest P. O. Box 968 P.O. Box 968 Richland, WA 99352-0968 Richland, WA 99352-0968 Mr. Albert E. Mouncer (Mail Drop PE01) Mr. William A. Horin, Esq.

Vice President, Corporate Services/ Winston & Strawn General Counsel/CFO 1400 L Street, N.W.

Energy Northwest Washington, DC 20005-3502 P.O. Box 968 Richland, WA 99352-0968 Mr. Matt Steuerwalt Executive Policy Division Chairman Office of the Governor Energy Facility Site Evaluation Council P.O. Box 43113 P.O. Box 43172 Olympia, WA 98504-3113 Olympia, WA 98504-3172 Ms. Lynn Albin Mr. Douglas W. Coleman (Mail Drop PE20) Washington State Department of Health Manager, Regulatory Programs P.O. Box 7827 Energy Northwest Olympia, WA 98504-7827 P.O. Box 968 Richland, WA 99352-0968 Technical Services Branch Chief FEMA Region X Mr. Gregory V. Cullen (Mail Drop PE20) 130 228th Street S.W.

Supervisor, Licensing Bothell, WA 98201-9796 Energy Northwest P.O. Box 968 Richland, WA 99352-0968 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Chairman Benton County Board of Commissioners P.O. Box 190 Prosser, WA 99350-0190 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 69 Richland, WA 99352-0069 March 2005