ML071160422
| ML071160422 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 05/10/2007 |
| From: | Donohew J NRC/NRR/ADRO/DORL/LPLIV |
| To: | Muench R Wolf Creek |
| Donohew J N, NRR/DORL/LP4, 415-1307 | |
| References | |
| GL-06-002, TAC MD1050 | |
| Download: ML071160422 (4) | |
Text
May 10, 2007 Mr. Rick A. Muench President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, KS 66839
SUBJECT:
WOLF CREEK GENERATING STATION - CLOSEOUT LETTER FOR GENERIC LETTER 2006-02, GRID RELIABILITY AND THE IMPACT ON PLANT RISK AND THE OPERABILITY OF OFFSITE POWER (TAC NO. MD1050)
Dear Mr. Muench:
On February 1, 2006, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 2006-02, Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power (Agencywide Documents Access and Management System (ADAMS) Accession No. ML060180352). The purpose of the GL is for NRC to obtain information from its licensees in the following four areas involving the grid at a nuclear power plant (NPP):
1.
Use of protocols between the NPP and the transmission system operator (TSO),
independent system operator (ISO), or reliability coordinator/authority (RC/RA) and the use of transmission load flow analysis tools (analysis tools) by TSOs to assist NPPs in monitoring grid conditions to determine the operability of offsite power systems under plant technical specifications. (The TSO, ISO, or RA/RC is responsible for preserving the reliability of the local transmission system. In this GL, the term TSO is used to denote these entities);
2.
Use of NPP/TSO protocols and analysis tools by TSOs to assist NPPs in monitoring grid conditions for consideration in maintenance risk assessments; 3.
Offsite power restoration procedures in accordance with Section 2 of NRC Regulatory Guide (RG) 1.155, Station Blackout; and 4.
Losses of offsite power caused by grid failures at a frequency equal to or greater than once in 20 site-years in accordance with RG 1.155.
Subsequent to the GL, the NRC also issued a letter dated December 5, 2006 (ADAMS Accession No. ML063380308) with a request for additional information (RAI) regarding the resolution of GL 2006-02 to 63 of 65 holders of operating licenses for nuclear power reactors, including Wolf Creek Nuclear operating Corporation (the licensee) for Wolf Creek Generating Station (WCGS). The RAI letter requested licensees respond to questions in the following six areas: (1) switchyard minimum voltage, (2) loss of real-time contingency analysis (RTCA) capability, (3) verification of RTCA predicted post-trip voltage, (4) identification of applicable single contingencies, (5) seasonal variation in grid stress (reliability and loss-of-offsite power probability, and (6) interface with transmission system operator during extended plant
R. A. Muench maintenance. Of the six questions attached to the NRCs RAI letter, the licensee was requested to address questions numbered 1, 2, 3, 5, and 6 for WCGS.
By letter dated July 27, 2006 (WM 06-0027, ADAMS Accession No. ML062090523), the licensee responded to the information requested in the GL. By the additional letter dated January 31, 2007 (ET 07-0003, ADAMS Accession No. ML070380281) the licensee responded to the subsequent RAI letter dated December 5, 2006. The licensee also provided a response to the GL in its letter dated March 31, 2006, but the licensee stated that the information provided is sensitive and meets the criteria of 10 CFR 2.390 in that the letter, including the attachments, is exempt from public disclosure in accordance with 10 CFR 2.390, and is marked accordingly. The licensees July 27, 2006, letter provided the same information with the sensitive information blanked out. Based on the information provided in these letters, the NRC staff has concluded that the licensee is complying with the NRC regulatory requirements governing electric power sources and associated personnel training, and considers the licensees response to GL 2006-02 to be complete for WCGS.
Based on this, the subject TAC MD1050 is closed. If you have any questions with respect to this letter, contact me at 301-415-1307.
Sincerely,
/RA/
Jack Donohew, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-482 cc: See next page
ML062090523), the licensee responded to the information requested in the GL. By the additional letter dated January 31, 2007 (ET 07-0003, ADAMS Accession No. ML070380281) the licensee responded to the subsequent RAI letter dated December 5, 2006. The licensee also provided a response to the GL in its letter dated March 31, 2006, but the licensee stated that the information provided is sensitive and meets the criteria of 10 CFR 2.390 in that the letter, including the attachments, is exempt from public disclosure in accordance with 10 CFR 2.390, and is marked accordingly. The licensees July 27, 2006, letter provided the same information with the sensitive information blanked out. Based on the information provided in these letters, the NRC staff has concluded that the licensee is complying with the NRC regulatory requirements governing electric power sources and associated personnel training, and considers the licensees response to GL 2006-02 to be complete for WCGS.
Based on this, the subject TAC MD1050 is closed. If you have any questions with respect to this letter, contact me at 301-415-1307.
Sincerely,
/RA/
Jack Donohew, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-482 DISTRIBUTION PUBLIC LPLIV r/f cc: See next page RidsNrrDorl RidsNrrDorlLpl4 RidsNrrPMJDonohew RidsNrrLALFeizollahi RidsOgcRp RidsAcrsAcnwMailCenter RidsRegion4MailCenter RidsNrrDprPgcb (CJackson)
JRobinson, PGCB RidsNrrDeEeeb (GWilson)
MMcConnell, EEEB ACCESSION NO.: ML071160422 OFFICE NRR/LPL4/PM NRR/LPL4/LA PGCB/BC EEEB/BC NRR/LPL4/BC NAME JDonohew LFeizollahi CJackson GWilson THiltz DATE 5/3/07 4/30/07 5/8/07 5/9/07 5/10/07
February 2006 Wolf Creek Generating Station cc:
Jay Silberg, Esq.
Pillsbury Winthrop Shaw Pittman LLP 2300 N Street, NW Washington, D.C. 20037 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 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 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 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