ML13296A789

Request for Additional Information

ML13296A789
Person / Time
Site:	Vogtle
Issue date:	10/29/2013
From:	Martin R Plant Licensing Branch II
To:	Pierce C Southern Nuclear Operating Co
Martin, Robert NRR/DORL 415-1493
References
TAC MF2596, TAC MF2597
Download: ML13296A789 (2)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 October 29, 2013 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.

Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF2596 and MF2597)

Dear Mr. Pierce:

By letter dated August 29, 2012 (Agencywide Documents Access and Management System Accession No. ML12243A248), Southern Nuclear Operating Company, Inc. requested The U.S.

Nuclear Regulatory Commission (NRC) approval of proposed inservice inspection (lSI) alternatives VEGP-ISI-AL T-05, Version 1 and VEGP-ISI-ALT-06, Version 1. These alternatives propose one time extensions of examination of category 8-A reactor vessel welds and selected examination category 8-D reactor vessel nozzle welds and reactor vessel inside radius sections from a ten-year examination period to a twenty-year examination period.

The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter.

Sincerely,

.. ii' L Ct\.,..

Robert E. Martin,' Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425 cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION (RAil BY THE OFFICE OF NUCLEAR REACTOR REGULATION REQUESTS FOR ALTERNATIVES VEGP-ISI-ALT-05 AND VEGP-ISI-ALT-06 FOR THIRD 10-YEAR INSERVICE INSPECTION PROGRAM INTERVAL SOUTHERN NUCLEAR OPERATING COMPANY, INC VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 (VEGP)

Request for alternative VEGP-ISI-ALT-05 states that VEGP, Unit 1, reactor pressure vessel (RPV) examinations currently scheduled for 2015 will be deferred until 2026, plus or minus one refueling outage, and request for alternative VEGP-ISI-ALT-06 states that VEGP, Unit 2, RPV examinations currently scheduled for 2016 will also be deferred until 2026, plus or minus one refueling outage. These dates are not identical to those mentioned in the cover letter dated August 29, 2012. In the safety evaluation of the relief requests, the NRC staff plans to reference only the dates appearing in VEGP-ISI-ALT-05 and VEGP-ISI-ALT-06. Please comment if you disagree.

Regarding evaluation of indications identified in past inservice inspection (lSI) examinations, Table 2 of VEGP-ISI-ALT-05 and Table 2 of VEGP-ISI-ALT-06 state that these indications are acceptable per Table IWB-351 0-1 of Section XI of the ASME Code." Please provide these evaluations to support the conclusion.

The neutron fluence for all RPV materials and the chemistry factors for the RPV materials based on surveillance data (in Table 3 in VEGP-ISI-ALT-05 for Unit 1 and Table 3 in VEGP-ISI-ALT-06 for Unit 2) are different from their corresponding values in the license renewal application that was approved in 2009. Please provide the baSis for these changes, including a list of additional surveillance capsule reports and updated neutron fluence evaluations which contributed to the changes.

October 29,2013 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.

Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF2596 and MF2597)

Dear Mr. Pierce:

By letter dated August 29, 2012 (Agencywide Documents Access and Management System Accession No. ML12243A248), Southern Nuclear Operating Company, Inc. requested The U.S.

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 examination of c:ltegory B-A reactor vessel welds and selected examination category B-D reactor vessel nozzle welds and reactor vessel inside radius sections from a ten-year examination period to a twenty-year examination period.

The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter.

Sincerely, IRA!

Robert E. Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425 cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC LPL2-1 RlF SSheng, NRR RidsAcrsAcnw_MailCTR Resource RidsNrrDorlDpr Resource RidsNrrLASFigueroa Resource RidsNrrDorlLpl2-1 Resource RidsNrrPMVogtle Resource RidsRgn2MailCenter Resource ADAMS Accession No.: ML13296A789 *By email dated October 18, 2013 OFFICE DORULPL2-1/PM DORLlLPL2-1/LA DE/EVIB/BC DORULPL2-1/BC DORULPL2-1/PM NAME RMartin SFigueroa SRosenberg* RPascarelli RMartin DATE 10/28/13 10/28/13 10/18/13 10/28/13 10/29/13 OFFICIAL RECORD COpy