ML070930695

RAI, Requests for Additional Information for the Review of the Wolf Creek Generating Station, Unit 1, License Renewal Application

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, 2007Mr. Terry J. GarrettVice President Engineering Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839

SUBJECT:

REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THEWOLF CREEK GENERATING STATION, UNIT 1, LICENSE RENEWAL APPLICATION

Dear Mr. Garrett:

By letter dated September 27, 2006, Wolf Creek Nuclear Operating Corporation submitted anapplication 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 mutuallyagreeable 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 ManagerLicense Renewal Branch B Division of License Renewal Office of Nuclear Reactor RegulationDocket No. 50-482

Enclosure:

Requests for Additional Informationcc w/encl: See next page

ML070930695 Document Name: C:\FileNet\ML070930695.wpdOFFICELA:DLRPM:RLRB:DLRBC:RLRB:DLRNAMESFigueroaVRodríguezRAuluck DATE04/04/07 04/09/07 04/09/07 EnclosureWOLF CREEK GENERATING STATION (WCGS), UNIT 1LICENSE RENEWAL APPLICATION (LRA)REQUEST FOR ADDITIONAL INFORMATION (RAI)AGING MANAGEMENT REVIEWAging Management of Reactor Vessel, Internals, and Reactor Coolant System RAI 3.1.2.2.3-1LRA Section 3.1.2.2.3-1 states that since beltline materials remain limiting, nozzles were notevaluated separately. In accordance with 10 CFR Part 50, Appendix H, Section III, if the end oflife (EOL) peak neutron fluence exceeds 10 17 n/cm 2 (E > 1 MeV) the material must bemonitored 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 ANALYSISNeutron 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 ShockRAI 4.2.2-1The staff requests that the applicant submit a table of the 60-year EOL reference temperaturefor pressurized thermal shock (RTPTS) values for each beltline material. The heat numbers,material ID, copper and nickel content (weight-percent), chemistry factor, initial RT NDT, margin,EOL peak fluence, fluence factor, RTPTS, and EOL RTPTS values should be included. Inaddition, 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 THEWOLF CREEK GENERATING STATION, UNIT 1, LICENSE RENEWAL APPLICATIONDISTRIBUTION

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VRodriguez

CJacobs JDonohew GPick, RIV SCochrum, RIV Wolf Creek Generating Station cc:Jay Silberg, Esq.Pillsbury Winthrop Shaw Pittman, LLP 2300 N Street, NW Washington, DC 20037Regional Administrator, Region IVU.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-7005Senior Resident InspectorU.S. Nuclear Regulatory Commission P.O. Box 311 Burlington, KS 66839Chief Engineer, Utilities DivisionKansas Corporation Commission 1500 SW Arrowhead Road Topeka, KS 66604-4027Office of the GovernorState of Kansas Topeka, KS 66612Attorney General120 S.W. 10 th Avenue, 2 nd FloorTopeka, KS 66612-1597County ClerkCoffey County Courthouse 110 South 6 th StreetBurlington, KS 66839Thomas A. Conley, Section ChiefRadiation and Asbestos Control Kansas Department of Health and Environment Bureau of Air and Radiation 1000 SW Jackson, Suite 310 Topeka, KS 66612-1366Vice President Operations/Plant ManagerWolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839Supervisor LicensingWolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839U.S. Nuclear Regulatory CommissionResident Inspectors Office/Callaway Plant

8201 NRC Road Steedman, MO 65077-1032Kevin J. Moles, ManagerRegulatory Affairs Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839Lorrie I. Bell, Project ManagerWolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839Mr. James RossNuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708