NL-14-0050, Clarification to Proposed Inservice Inspection Alternatives, VEGP-ISI-ALT-05, Version 1 and VEGP-ISI-ALT-06, Version 1

Clarification to Proposed Inservice Inspection Alternatives, VEGP-ISI-ALT-05, Version 1 and VEGP-ISI-ALT-06, Version 1

ML14031A429
Person / Time
Site:	Vogtle
Issue date:	01/31/2014
From:	Pierce C Southern Co, Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-14-0050
Download: ML14031A429 (2)

Text

Charles R. Pierce Southern Nuclear Regulatory Affairs Director Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295 Birmingham, Alabama 35201 Tel 205.992.7872 Fax 205.992.7601 SOUTHERN<<\

COMPANY January 31, 2014 Docket Nos.: 50-424 NL-14-0050 50-425 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Vogtle Electric Generating Plant- Units 1 & 2 Clarification to Proposed lnservice Inspection Alternatives VEGP-ISI-ALT-05 Version 1 and VEGP-ISI-ALT-06 Version 1 Ladies and Gentlemen:

By letter dated August 29, 2012, and as supplemented by letter dated November 25, 2013, Southern Nuclear Operating Company (SNC) requested Nuclear Regulatory Commission (NRC) approval of proposed inservice inspection (lSI) Alternatives VEGP-ISI-ALT-05, Version 1 and VEGP-ISI-ALT-06, Version 1. These alternatives propose one-time extensions of reactor vessel examinations from a ten-year examination period to a twenty-year examination period for their respective unit.

Specifically, these alternatives request one-time extensions to selected ASME Examination Category B-A reactor vessel welds and selected ASME Examination Category B-D reactor vessel nozzle welds and reactor vessel inside radius sections.

Based on discussion with the NRC, further clarification is needed regarding the Interval Date for the Alternatives. SNC requested approval for exam exemption during the 3rd lSI Interval, which is from May 31, 2007 through May 30, 2017. Rather than requesting an exam extension, SNC should have requested an extension of the 3rd lSI Interval, in which the exams would be performed during an extended 3rd lSI Interval.

This is approach is in line with the wording in WCAP-16168-NP-A. The approval of VEGP-ISI-ALT-05, Version 1 and VEGP-ISI-ALT-06, Version 1 will allow examinations identified in VEGP-ISI-ALT-05, Version 1 and VEGP-ISI-ALT-06, Version 1 that are currently scheduled for the 3rd lSI interval to be delayed until the end of the extended 3rd lSI interval.

U. S. Nuclear Regulatory Commission NL-14-0050 Page 2 In addition, SNC had listed the Duration of Proposed Alternative on the August 29, 2012 letter as the 3rd and 4th intervals, since the inspections would be delayed until the 4th lSI interval. However, the requested Duration of Proposed Alternative should only state the 3rd interval. The Alternatives will not affect the proposed examination dates of the 4th interval that were indicated in the letter dated August 29, 2012, as supplemented by the letter dated November 25, 2013.

This letter contains no NRC commitments. If you have any questions, please contact Ken McElroy at (205) 992-7369.

Respectfully submitted, C. R. Pierce Regulatory Affairs Director CRP/RMJ cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bost, Executive Vice President & Chief Nuclear Officer Mr. T. E. Tynan, Vice President- Vogtle Mr. B. L. lvey, Vice President- Regulatory Affairs Mr. B. J. Adams, Vice President- Fleet Operations RType: CVC7000 U.S. Nuclear Regulatory Commission Mr. V. M. McCree, Regional Administrator Mr. R. E. Martin, NRR Senior Project Manager- Vogtle Mr. L. M. Cain, Senior Resident Inspector- Vogtle