ML15028A176

Correction to Relief Requests I3R-08, Reactor Pressure Vessel (RPV) Interior Attachments and I3R-09, RPV Pressure-Retaining Welds, Exam Interval Extensions, Third 10-year Inservice Inspection Interval (TAC MF3321 & MF3322)

ML15028A176
Person / Time
Site:	Wolf Creek
Issue date:	02/09/2015
From:	Lyon C Plant Licensing Branch IV
To:	Heflin A Wolf Creek
Lyon C
References
TAC MF3321, TAC MF3322
Download: ML15028A176 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 9, 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- CORRECTION TO REQUEST FOR RELIEF NOS. 13R-08 AND 13R-09 FOR THE THIRD 10-YEAR INSERVICE INSPECTION PROGRAM INTERVAL (TAC NOS. MF3321 AND MF3322)

Dear Mr. Heflin:

By letter dated January 8, 2014, as supplemented by letter dated August 28, 2014, Wolf Creek Nuclear Operating Corporation (WCNOC, the licensee) proposed alternatives to the third 10-year in service inspection (lSI) interval requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, lSI Program, for the Wolf Creek Generating Station (WCGS).

Pursuant to Title 10 of the Code of Federal Regulations (1 0 CFR) paragraph 50.55a(a)(3)(ii),

relief request 13R-08 proposed an extension of the interval by approximately 3 months beyond the Code-allowed end-of-interval extension for the performance of ASME Code-required Category B-N-2 and B-N-3 examinations of the reactor pressure vessel (RPV) interior attachments and core support structure. Pursuant to 10 CFR 50.55a(a)(3)(i), relief request 13R-09 proposed an extension of the interval from 10 to 20 years for the performance of ASME Code-required Category B-A (volumetric examinations of the RPV welds) and Category B-D (the nozzle inside radius and nozzle weld).

By letter dated December 10, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14321A864), the U.S. Nuclear Regulatory Commission (NRC) staff authorized the use of relief request 13R-08 at WCGS until 3 months beyond the end of the current third lSI interval, which will be the conclusion of refueling outage RF21, currently scheduled for the fall of 2016. The NRC staff also authorized the use of relief request 13R-09 for Category B-A (volumetric examinations of the RPV welds) and Category B-D (the nozzle inside radius and nozzle weld) at WCGS until the end of the extended third lSI interval in 2025.

By Federal Register notice 79 FR 65776, dated November 5, 2014, which became effective on December 5, 2014, the paragraph headings in 10 CFR 50.55a were revised. Accordingly, citations in the NRC letter dated December 10, 2014, of 10 CFR 50.55a(a)(3)(i) and (a)(3)(ii) should have cited 10 CFR 50.55a(z)(1) and (z)(2), respectively. I apologize for any confusion that may have resulted from the revision.

A. Heflin If you have any questions, please contact me at 301-415-2296 or via e-mail at fred.lyon@nrc.gov.

Sincerely, Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-482 cc: Distribution via Listserv

ML15028A176 *via email OFFICE NRR/DORLILPL4-1/PM NRR/DORLILPL4-1/LA NRR/DORL/LPL4-1/BC(A) NRR/DORL/LPL4-1 PM NAME Flyon JBurkhardt* EOesterle Flyon DATE 2/6/15 2/5115 2/9/15 2/9/15