ML061300112

Meeting Summary of NPPD Meeting Tornado Concerns

ML061300112
Person / Time
Site:	Cooper
Issue date:	05/12/2006
From:	Brian Benney Plant Licensing Branch III-2
To:
Benney B, NRR/DLPM, 415-3764
Shared Package
ML06120077	List: ML061300112
References
TAC MC8236
Download: ML061300112 (5)

Text

May 12, 2006 LICENSEE:

Nebraska Public Power District (NPPD)

FACILITY:

Cooper Nuclear Station (CNS)

SUMMARY

OF MAY 5, 2006, MEETING WITH NPPD ON CNS TORNADO CONCERNS (TAC NO. MC8236)

On May 5, 2006, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of NPPD at the NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss concerns related to the design of components and systems inside the diesel generator (DG) building and their ability to withstand tornado pressurization loads. The concerns were identified and documented as an unresolved item in a Safety System Design and Performance Capability inspection conducted in May 2005. The licensee presented its venting analysis of the DG building and discussed its calculations that demonstrated the structural adequacy of the heating, ventilation, and air conditioning ducting during depressurization and repressurization phases of the tornado event.

The NRC staff determined that there was not an immediate safety concern for components inside the DG building at CNS. However, the NRC staff still intends to look at this on a generic basis. The NRC staff felt that the alternate calculation performed was reasonable and practical, but the staff had not reviewed the venting details. Region IV should close the unresolved item in the next resident integrated inspection report.

Members of the public were not in attendance. A list of meeting attendees is enclosed. A copy of the licensees slides presented at the meeting has been placed in the NRC Agencywide Documents Access and Management System Accession Number ML061290460.

Please direct any inquiries to me at 301-415-3764, or bjb@nrc.gov.

/RA/

Brian Benney, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-298

Enclosure:

List of Attendees cc w/encl: See next page

May 12, 2006 LICENSEE:

Nebraska Public Power District (NPPD)

FACILITY:

Cooper Nuclear Station (CNS)

SUMMARY

OF MAY 5, 2006, MEETING WITH NPPD ON CNS TORNADO CONCERNS (TAC NO. MC8236)

On May 5, 2006, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of NPPD at the NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss concerns related to the design of components and systems inside the diesel generator (DG) building and their ability to withstand tornado pressurization loads. The concerns were identified and documented as an unresolved item in a Safety System Design and Performance Capability inspection conducted in May 2005. The licensee presented its venting analysis of the DG building and discussed its calculations that demonstrated the structural adequacy of the heating, ventilation, and air conditioning ducting during depressurization and repressurization phases of the tornado event.

The NRC staff determined that there was not an immediate safety concern for components inside the DG building at CNS. However, the NRC staff still intends to look at this on a generic basis. The NRC staff felt that the alternate calculation performed was reasonable and practical, but the staff had not reviewed the venting details. Region IV should close the unresolved item in the next resident integrated inspection report.

Members of the public were not in attendance. A list of meeting attendees is enclosed. A copy of the licensees slides presented at the meeting has been placed in the NRC Agencywide Documents Access and Management System Accession Number ML061290460.

Please direct any inquiries to me at 301-415-3764, or bjb@nrc.gov.

/RA/

Brian Benney, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-298

Enclosure:

List of Attendees cc w/encl: See next page DISTRIBUTION:

PUBLIC RidsOgcRp JClark, RIV LPLIV Reading RidsRgn4MailCenter SSamaddar, NRR/ADES RidsNrrDorlLpl4 RJasinski, NRR GImbro, NRR/ADES RidsNrrPMBBenney RidsNrrDeEemb MHartzman, NRR/ADES RidsNrrLALFeizollahi HWalker, NRR/ADES SO'Connor, RIV EDO RidsAcrsAcnwMailCenter Package: ML06130077 Meeting Notice: ML061000041 Mtg Summary No: ML061300112 Handout No.: ML061290460 Mtg Reschedule No: ML061080032 Mtg Postponement Reason: ML061080105 OFFICE LPL4/PM LPL4/LA PD4/BC NAME BBenney;mxr4 LFeizollahi DTerao DATE 5/11/06 5/11/06 5/12/06 OFFICIAL RECORD COPY

Cooper Nuclear Station Tornado Concerns May 5, 2006 Attendees NAME ORGANIZATION G. Kline NPPD J. Lechner NPPD A. Mitchell NPPD T. Stevens NPPD J. Roberts NPPD R. Yantz NPPD D. Terao NRC B. Benney NRC J. Clark NRC S. Samaddar NRC M. Hartzman NRC K. Manoly NRC H. Walker NRC G. Imbro NRC A. Marion NEI J. McCan Entergy NEI

- Nuclear Energy Institute NPPD - Nebraska Public Power District NRC

- Nuclear Regulatory Commission Enclosure

Cooper Nuclear Station cc:

Mr. William J. Fehrman President and Chief Executive Officer Nebraska Public Power District 1414 15th Street Columbus, NE 68601 Mr. Gene Mace Nuclear Asset Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. John C. McClure Vice President and General Counsel Nebraska Public Power District P. O. Box 499 Columbus, NE 68602-0499 Mr. Paul V. Fleming Licensing Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. Michael J. Linder, Director Nebraska Department of Environmental Quality P. O. Box 98922 Lincoln, NE 68509-8922 Chairman Nemaha County Board of Commissioners Nemaha County Courthouse 1824 N Street Auburn, NE 68305 Ms. Julia Schmitt, Manager Radiation Control Program Nebraska Health & Human Services R & L Public Health Assurance 301 Centennial Mall, South P.O. Box 95007 Lincoln, NE 68509-5007 Mr. H. Floyd Gilzow Deputy Director for Policy Missouri Department of Natural Resources P. O. Box 176 Jefferson City, MO 65102-0176 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 218 Brownville, NE 68321 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 Director, Missouri State Emergency Management Agency P. O. Box 116 Jefferson City, MO 65102-0116 Chief, Radiation and Asbestos Control Section Kansas Department of Health and Environment Bureau of Air and Radiation 1000 SW Jackson Suite 310 Topeka, KS 66612-1366 Mr. Daniel K. McGhee Bureau of Radiological Health Iowa Department of Public Health Lucas State Office Building, 5th Floor 321 East 12th Street Des Moines, IA 50319 Mr. Keith G. Henke, Planner Division of Community and Public Health Office of Emergency Coordination 930 Wildwood P.O. Box 570 Jefferson City, MO 65102

Cooper Nuclear Station Jerry C. Roberts, Director of Nuclear Safety Assurance Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. John F. McCann, Director Licensing, Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601-1813 Mr. Randall K. Edington Vice President-Nuclear and CNO Nebraska Public Power District P. O. Box 98 Brownville, NE 68321