ML15286A103

Request for Additional Information

ML15286A103
Person / Time
Site:	Farley
Issue date:	10/26/2015
From:	Shawn Williams Plant Licensing Branch II
To:	Pierce C Southern Nuclear Operating Co
Williams S
References
CAC MF6475
Download: ML15286A103 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 26, 2015 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.

P.O. Box 1295, Bin 038 Birmingham, AL 35201-1295

SUBJECT:

JOSEPH M. FARLEY NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION (CAC NO. MF6475)

Dear Mr. Pierce:

By letter dated July 17, 2015, the Southern Nuclear Operating Company, Inc. (SNC, the licensee) submitted a relief request for Joseph M. Farley, Unit 1. SNC requested a one-time extension from 1O years to 20 years between examinations required by IWB 2412, Inspection Program B, which requires volumetric examination of essentially 100% of reactor vessel pressure-retaining welds in Table IWB-2500-1.

The U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is needed as discussed in the Enclosure. We request that SNC respond within 30 days of the date of this letter. Please note that the NRC staff's review is continuing and further requests for information may be developed.

Sincerely, Shawn Williams, Project Manager Plant Licensing Branch, 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-348

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv

• REQUEST FOR ADDITIONAL INFORMATION JOSEPH M. FARLEY NUCLEAR PLANT, UNIT 1 SOUTHERN NUCLEAR OPERATING COMPANY, INC.

INSERVICE INSPECTION RELIEF REQUEST, FNP-ISl-ALT-18 REACTOR VESSEL BELTUNE WELD EXAM EXTENSION DOCKET NO. 50-348 By letter dated July 17, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15198A155), the Southern Nuclear Operating Company, Inc.,

(SNC) submitted a relief request for Joseph M. Farley, Unit 1. SNC requested the U.S. Nuclear Regulatory Commission (NRC) to approve a one-time extension of the lnservice Inspection (ISi) ,

interval from 1O years to 20 years for the inspection of specific reactor pressure vessel welds in,*

. accordance with the WCAP-16168-NP-A, Revision 3 report, "Risk-Informed Extension of '

Reactor Vessel In-Service Inspection Interval," October 2007 (ADAMS Accession No. ML113060207).

The NRC staff has reviewed the request and determined that additional information is necessary to complete the review.

Background:

WCAP-16168-NP, Revision 3, requires the licensee to report the results of prior ISi of the reactor pressure vessel welds.

Issue: Enclosure 1 to the July 17, 2015, submittal includes a summary:of the number of indications from the 3rd ISi, but does not include any history of earlier inspections or the specific location of the indications with respect to the cladding base-metal interface.

Request: Provide the location and size of the indications that were found jn the reactor pressure vessel beltline area. Also, state whether this indication was observed in any of the previous inspections. State whether the size of the indication changed during the c'ourse of the three inspections, and if so, whether the size of the indication could be attributed to improved inspection procedures.

• Enclosure

ML15286A103 *By e-mail El CB/BC LPL2-1/BC LPL2-1/PM SWilliams SFigueroa JMcHale* RPascarelli SWilliams DATE 10/21/15 10/21/15 10/20/15 ' 10/23/15 10/26/15