ML15082A005

Request for Additional Information, Round 2, Request to Revise Technical Specifications to Adopt TSTF-523, Revision 2, Generic Letter 2008-01, Managing Gas Accumulation, Using the Consolidated Line Item Improvement Process

ML15082A005
Person / Time
Site:	Wolf Creek
Issue date:	03/27/2015
From:	Lyon C F Plant Licensing Branch IV
To:	Heflin A C Wolf Creek
Lyon C F
References
TAC MF5280, TSTF-523, Rev 2
Download: ML15082A005 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 27, 2015 Mr. Adam C. Heflin President, Chief Executive Officer, and Chief Nuclear Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, KS 66839

SUBJECT:

WOLF CREEK GENERATING STATION-REQUEST FOR ADDITIONAL INFORMATION RE: LICENSE AMENDMENT REQUEST TO ADOPT TSTF-523, REVISION 2, "GENERIC LETTER 2008-01, MANAGING GAS ACCUMULATION" (TAC NO. MF5280)

Dear Mr. Heflin:

By letter dated November 20, 2014, as supplemented March 18, 2015, Wolf Creek Nuclear Operating Corporation (the licensee) submitted to the U.S. Nuclear Regulatory Commission (NRC) a license amendment request to revise the Wolf Creek Generating Station (WCGS) Technical Specification (TS) requirements to address NRC Generic Letter 2008-01, "Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems," as described in Technical Specification Task Force (TSTF) Traveler TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation." The NRC staff has reviewed the information provided in your application and determined that additional information is required in order to complete its formal review. The enclosed questions were provided to Mr. S. Wideman of your staff on March 23, 2015. Please provide a response to the enclosed questions within 45 days of the date of this letter. If you have any questions, please contact me at 301-415-2296 or via e-mail at fred.lyon@nrc.gov.

Docket No. 50-482 Enclosure Request for Additional Information cc w/encl: Distribution via Listserv Sincerely, Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO ADOPT TSTF-523, REVISION 2 WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION DOCKET NO. 50-482 By letter dated November 20, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 14330A247), as supplemented by letter dated March 18, 2015 (ADAMS Accession No. ML 15084A104), Wolf Creek Nuclear Operating Corporation (the licensee) submitted to the U.S. Nuclear Regulatory Commission (NRC) a license amendment request to revise the Wolf Creek Generating Station (WCGS) Technical Specification (TS) requirements to address NRC Generic Letter 2008-01, "Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems," as described in Technical Specification Task Force (TSTF) Traveler TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation." With respect to the void volume table provided in the March 18, 2015, letter, the NRC staff requests the following additional information in order to complete its review of the request. Reactor Systems Branch Questions:

1. Please provide the surveillance frequency applied at the time each void was identified.

2. Please provide the initial surveillance date following attaining Mode 1 for each of Cycles 17 through 20. 3. If a void is not identified, please clarify if this means the surveillance determined that there was no void. 4. For each identified void, please explain what initiated conducting the surveillance.

5. Please provide the MODE 1 entry and exits (entry into MODE 2) associated with each Cycle for Cycles 17 through 20. Enclosure March 27, 2015 Mr. Adam C. Heflin President, Chief Executive Officer, and Chief Nuclear Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, KS 66839

SUBJECT:

WOLF CREEK GENERATING STATION -REQUEST FOR ADDITIONAL INFORMATION RE: LICENSE AMENDMENT REQUEST TO ADOPT TSTF-523, REVISION 2, "GENERIC LETTER 2008-01, MANAGING GAS ACCUMULATION" (TAC NO. MF5280)

Dear Mr. Heflin:

By letter dated November 20, 2014, as supplemented March 18, 2015, Wolf Creek Nuclear Operating Corporation (the licensee) submitted to the U.S. Nuclear Regulatory Commission (NRC) a license amendment request to revise the Wolf Creek Generating Station (WCGS) Technical Specification (TS) requirements to address NRC Generic Letter 2008-01, "Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems," as described in Technical Specification Task Force (TSTF) Traveler TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation." The NRC staff has reviewed the information provided in your application and determined that additional information is required in order to complete its formal review. The enclosed questions were provided to Mr. S. Wideman of your staff on March 23, 2015. Please provide a response to the enclosed questions within 45 days of the date of this letter. If you have any questions, please contact me at 301-415-2296 or via e-mail at fred.lyon@nrc.gov.

Docket No. 50-482 Enclosure Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:

Sincerely, IRA! Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation PUBLIC LPL4-1 r/f RidsAcrsAcnw_MailCTR Resource RidsNrrDorlLpl4-1 Resource RidsNrrDssSrxb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMWolfCreek Resource RidsRg n4Mai1Center Resource WLyon, NRR/DSS/SRXB JWhitman, NRR/DSS/SRXB MChernoff, NRR/DSS/STSB ADAMS Accession No.: ML 15082A005

• email dated OFFICE NRR/DORULPL4-1/PM NRR/DORULPL4-1

/LA NRR/DSS/SRXB/BC NRR/DORULPL4-1

/BC NRR/DORL/LPL4-1/PM NAME FL yon JBurkhardt CJackson*

MMarkley FL yon DATE 3/27/15 3/24/15 3/21/15 3/27/15 3/27/15 OFFICIAL RECORD COPY