ML070930695
| ML070930695 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 04/09/2007 |
| From: | Veronica Rodriguez NRC/NRR/ADRO/DLR/RLRB |
| To: | Garrett T Wolf Creek |
| rodriguez v m, ADRO/DLR/RLRB, 415-3703 | |
| References | |
| Download: ML070930695 (5) | |
Text
April 9, 2007 Mr. Terry J. Garrett Vice President Engineering Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839
SUBJECT:
REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE WOLF CREEK GENERATING STATION, UNIT 1, LICENSE RENEWAL APPLICATION
Dear Mr. Garrett:
By letter dated September 27, 2006, Wolf Creek Nuclear Operating Corporation submitted an application pursuant to 10 CFR Part 54, to renew the operating license for Wolf Creek Generating Station, Unit 1, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.
These requests for additional information were discussed with Lorrie Bell, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-3703 or e-mail VMR1@nrc.gov.
Sincerely,
/RA/
Verónica M. Rodríguez, Project Manager License Renewal Branch B Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-482
Enclosure:
Requests for Additional Information cc w/encl: See next page
ML070930695 Document Name: C:\\FileNet\\ML070930695.wpd OFFICE LA:DLR PM:RLRB:DLR BC:RLRB:DLR NAME SFigueroa VRodríguez RAuluck DATE 04/04/07 04/09/07 04/09/07
Enclosure WOLF CREEK GENERATING STATION (WCGS), UNIT 1 LICENSE RENEWAL APPLICATION (LRA)
REQUEST FOR ADDITIONAL INFORMATION (RAI)
AGING MANAGEMENT REVIEW Aging Management of Reactor Vessel, Internals, and Reactor Coolant System RAI 3.1.2.2.3-1 LRA Section 3.1.2.2.3-1 states that since beltline materials remain limiting, nozzles were not evaluated separately. In accordance with 10 CFR Part 50, Appendix H, Section III, if the end of life (EOL) peak neutron fluence exceeds 1017 n/cm2 (E > 1 MeV) the material must be monitored through a surveillance program. The staff requests that the applicant confirm that the increase in peak 60-year EOL fluence for the nozzles will not exceed this value. The staff requests that the applicant provide appropriate data for the inclusion of nozzle materials in the surveillance program, or explain how the nozzle materials are adequately monitored by the proposed aging management program.
TIME-LIMITED AGING ANALYSIS Neutron Fluence, Upper Shelf Energy and Adjusted Reference Temperature RAI 4.2.1-1 The staff requests that the applicant submit a table of the 60-year EOL upper shelf energy (USE) values for each beltline material. The heat numbers, material ID, copper content (weight-percent), initial USE, EOL 1/4 T fluence and the EOL 1/4 T USE should be included. In addition, the staff requests that the applicant discuss how surveillance results were evaluated in the determination of the USE values.
Pressurized Thermal Shock RAI 4.2.2-1 The staff requests that the applicant submit a table of the 60-year EOL reference temperature for pressurized thermal shock (RTPTS) values for each beltline material. The heat numbers, material ID, copper and nickel content (weight-percent), chemistry factor, initial RTNDT, margin, EOL peak fluence, fluence factor, RTPTS, and EOL RTPTS values should be included. In addition, the staff requests that the applicant discuss how surveillance capsule results were applied in the determination of the RTPTS values.
Letter to T.Garrett from V.Rodriguez, date April 9, 2007
SUBJECT:
REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE WOLF CREEK GENERATING STATION, UNIT 1, LICENSE RENEWAL APPLICATION DISTRIBUTION:
HARD COPY:
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Wolf Creek Generating Station cc:
Jay Silberg, Esq.
Pillsbury Winthrop Shaw Pittman, LLP 2300 N Street, NW Washington, DC 20037 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-7005 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 311 Burlington, KS 66839 Chief Engineer, Utilities Division Kansas Corporation Commission 1500 SW Arrowhead Road Topeka, KS 66604-4027 Office of the Governor State of Kansas Topeka, KS 66612 Attorney General 120 S.W. 10th Avenue, 2nd Floor Topeka, KS 66612-1597 County Clerk Coffey County Courthouse 110 South 6th Street Burlington, KS 66839 Thomas A. Conley, Section Chief Radiation and Asbestos Control Kansas Department of Health and Environment Bureau of Air and Radiation 1000 SW Jackson, Suite 310 Topeka, KS 66612-1366 Vice President Operations/Plant Manager Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839 Supervisor Licensing Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839 U.S. Nuclear Regulatory Commission Resident Inspectors Office/Callaway Plant 8201 NRC Road Steedman, MO 65077-1032 Kevin J. Moles, Manager Regulatory Affairs Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839 Lorrie I. Bell, Project Manager Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839 Mr. James Ross Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708