ML14356A314

Waterford Steam Electric Station, Unit 3 - Closeout of Review of Core Operating Limits Report, Cycle 20, Revision 1 (TAC No. MF4718)

ML14356A314
Person / Time
Site:	Waterford
Issue date:	12/29/2014
From:	Orenak M D Plant Licensing Branch IV
To:	Entergy Operations
Wang A B
References
TAC MF4718
Download: ML14356A314 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Vice President, Operations Entergy Operations, Inc. Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-3093 December 29, 2014

SUBJECT:

WATERFORD STEAM ELECTRIC STATION, UNIT 3-CLOSEOUT OF REVIEW OF CORE OPERATING LIMITS REPORT, CYCLE 20 (TAC NO. MF4718)

Dear Sir or Madam:

By letter dated July 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 14241A013), Entergy Operations, Inc. (the licensee), submitted the Core Operating Limits Report (COLR) for Cycle 20, Revision 1. The COLR for Cycle 20, Revision 1, was revised to change the azimuthal power tilt limit from less than or equal 0.03 to less than or equal to 0.05. By email dated October 21, 2014 (ADAMS Accession No. ML 14295A339), the U.S. Nuclear Regulatory Commission (NRC) staff sent a request for additional information (RAI) regarding this revision to the COLR. The licensee provided a response to the RAI by letter dated December 10, 2014 (ADAMS Accession No. ML 14344A992), indicating that the effect of the change in azimuthal power tilt on the assumed power peaking and control element assembly worth was evaluated and shown to be bounded by the current inputs to accident and transient analyses.

After reviewing the RAI response, the NRC staff concludes that the cycle-specific parameter limits were developed using NRC-approved methodologies and that changes between the Cycle 20 COLR and Revision 1 of the Cycle 20 COLR are conservative in nature and pose no safety concern. This completes the NRC staff's actions on Task Assignment Control No. MF4718. If you have any questions, please contact me at 301-415-3229 or via e-mail at Michaei.Orenak@nrc.gov.

Docket No. 50-382 cc: Distribution via Listserv Michael D. Orenak, Project Manager Plant Licensing IV-2 and Decommissioning Transition Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation This completes the NRC staff's actions on Task Assignment Control No. MF4718. If you have any questions, please contact me at 301-415-3229 or via e-mail at Michael. Orenak@nrc.gov.

Docket No. 50-382 cc: Distribution via Listserv DISTRIBUTION:

PUBLIC LPL4-2 R/F RidsAcrsAcnw_MaiiCTR Resource RidsNrrDoriDpr Resource RidsNrrDorllpl4-2 Resource RidsNrrDssSrxb Resource RidsNrrPMWaterford Resource RidsNrrLAJBurkhardt Resource RidsNrrLAPBiechman Resource RidsRgn4MaiiCenter Resource JWhitman, NRR/DSS/SRXB ADAMS Accession No ML 14356A314 OFFICE NRR/DORL/LPL4-2/PM NAME MOrenak DATE 12/29/14 OFFICE NRR/DSS/SRXB*

NAME JWhitman DATE 12/19/14 Sincerely, IRA/ Michael D. Orenak, Project Manager Plant Licensing IV-2 and Decommissioning Transition Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

• concurrence via email NRR/DORL/LPL4-2/LA NRR/DORLILPL4-2/LA PBiechman JBurkhardt 12/23/14 12/24/14 NRR/DORLILPL4-2/BC NRR/DORLILPL4-2/PM DBroaddus (JKim for) MOrenak 12/29/14 12/29/14 OFFICIAL RECORD COPY