ML061070154

RAI, One-time Extension of the Integrate Leakage Rate Test

ML061070154
Person / Time
Site:	Cooper
Issue date:	04/18/2006
From:	Brian Benney Plant Licensing Branch III-2
To:	Edington R Nebraska Public Power District (NPPD)
Benney B, NRR/DLPM, 415-3764
References
TAC MC9732
Download: ML061070154 (4)

Text

April 18, 2006 Mr. Randall K. Edington Vice President-Nuclear and CNO Nebraska Public Power District P. O. Box 98 Brownville, NE 68321

SUBJECT:

COOPER NUCLEAR STATION - REQUEST FOR ADDITIONAL INFORMATION RE: ONE-TIME EXTENSION OF THE INTEGRATED LEAKAGE RATE TEST (TAC NO. MC9732)

Dear Mr. Edington:

The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided in the January 30, 2005, submittal and has determined that the additional information identified in this enclosure is required in order for the NRC staff to complete its review. The licensee requested NRC staff approval of the subject relief request by August 30, 2006. To meet that target date, the NRC staff requests that the licensee provide its response no later than May 15, 2006.

Sincerely,

/RA/

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

Enclosure:

Request for Additional Information cc w/encl: See next page

April 18, 2006 Mr. Randall K. Edington Vice President-Nuclear and CNO Nebraska Public Power District P. O. Box 98 Brownville, NE 68321

SUBJECT:

COOPER NUCLEAR STATION - REQUEST FOR ADDITIONAL INFORMATION RE: ONE-TIME EXTENSION OF THE INTEGRATED LEAKAGE RATE TEST (TAC NO. MC9732)

Dear Mr. Edington:

The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided in the January 30, 2005, submittal and has determined that the additional information identified in this enclosure is required in order for the NRC staff to complete its review. The licensee requested NRC staff approval of the subject relief request by August 30, 2006. To meet that target date, the NRC staff requests that the licensee provide its response no later than May 15, 2006.

Sincerely,

/RA/

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

Enclosure:

Request for Additional Information cc w/encl: See next page DISTRIBUTION:

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RidsNrrLALFeizollahi RidsNrrDorlDpr RidsNrrPMBBenney RidsOgcRp RidsNrrDorlLpl4 (DTerao) RidsNrrDraApla (MRubin)

RidsAcrsAcnwMailCenter ADAMS ACCESSION NO: NRR-088 OFFICE LPL4/PM LPL4/LA APLA/BC LPL4/BC NAME BBenney;mxr4 LFeizollahi MRubin DTerao DATE 4/18/06 4/18/06 4/18/06 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION INTEGRATED LEAKAGE RATE TEST INTERVAL EXTENSION FACILITY OPERATING LICENSE NO. DPR-46 NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION DOCKET NO. 50-298

1. The analysis of external events in Appendix B of the January 30, 2006, submittal presents the estimated delta large early release frequency (LERF) associated with extending the test frequency from one test in 10 years to one test in 15 years. Please provide the estimated LERF (for combined internal and external events) associated with extending the test frequency from the original three tests in 10 years to one test in 15 years (using the Nuclear Energy Institute Interim Guidance.)

2. Clarify whether the baseline LERF value of 5.60E-7/year, reported in Appendix B, is based on internal events only, or internal and external events. If the former, provide the total LERF for internal and external events, including the impacts of the requested change.

3. Reconcile the low baseline LERF value of 5.60E-7/year reported in Appendix B with the much higher early containment failure frequency of 5.49E-6/year, reported in Table 6-5 of the enclosure to the January 30, 2006, submittal. Describe the definition of LERF used in the Cooper probabilistic risk analysis, and provide an accounting of how the major sequences contributing to internal and external event core damage frequency are classified (as LERF and non-LERF) using this definition.

Cooper Nuclear Station cc:

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

Missouri Department of Natural Resources 440 Hamilton Avenue P. O. Box 176 White Plains, NY 10601-1813 Jefferson City, MO 65102-0176 February 2006