ML061070154
| 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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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.
February 2006 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 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