ML16042A471

Virgil C. Summer Nuclear Station, Unit 1 - Request for Additional Information (CAC No. MF7085)

ML16042A471
Person / Time
Site:	Summer
Issue date:	02/18/2016
From:	Williams S A Plant Licensing Branch II
To:	Lippard G A South Carolina Electric & Gas Co
Williams S A, NRR/DORL/LPLII-1
References
CAC MF7085
Download: ML16042A471 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 18, 2016 Mr. George A. Lippard, Ill Vice President, Nuclear Operations South Carolina Electric

& Gas Company Virgil C. Summer Nuclear Station Post Office Box 88, Mail Code 800 Jenkinsville, SC 29065

SUBJECT:

VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 -REQUEST FOR ADDITIONAL INFORMATION (CAC NO. MF7085)

Dear Mr. Lippard:

By letter dated January 20, 2015, the South Carolina Electric

& Gas Company (SCE&G, the licensee) submitted a relief request for Virgil C. Summer, Unit 1, for the third ten-year inservice inspection interval.

The licensee requested relief from the examination requirements of Section XI of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) applicable to ASME Code Class 1 piping welds and ASME Code Class 2 vessel welds. The scope of this letter is for the two ASME Code Class 2 vessel welds, CGE-2-1110-1 B/1 and CGE-2-1110-1 B/2, in the residual heat removal heat exchanger shell. The NRC staff has determined that additional information is needed to continue the review as discussed in the Enclosure.

We request that SCE&G respond to these RAls 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.

Docket No. 50-395

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv Sincerely, Shawn Williams, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUEST NUMBER RR-111-12 VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 SOUTH CAROLINA ELECTRIC

& GAS COMPANY DOCKET NUMBER 50-395 By letter dated November 10, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 15316A556),

South Carolina Electric

& Gas Company, the licensee, submitted relief request number RR-111-12 to the U.S. Nuclear Regulatory Commission (NRC) for the third ten-year inservice inspection interval of Virgil C. Summer Nuclear Station, Unit 1. In relief request RR-111-12, the licensee requested relief from the examination requirements of Section XI of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) applicable to ASME Code Class 1 piping welds and ASME Code Class 2 vessel welds. The scope of this letter is for the two ASME Code Class 2 vessel welds, CGE-2-1110-1 B/1 and CGE-2-1110-1 B/2, in the residual heat removal heat exchanger shell identified in the licensee's submittal.

These two welds are ASME Code,Section XI, Examination Category C-A welds, Item Nos. C1 .20. The licensee has determined that conformance with the examination requirementsSection XI of the ASME Code for these welds is impractical.

Title 1 O of the Code of Federal Regulations (1 O CFR), Part 50, Paragraph 50.55a(g)(5)(iii) requires the licensee to submit information to the NRC to support the determination of impracticality.

The NRC staff has determined that the following request for additional information (RAI) is required to complete its review. RAI No. 1 Please discuss the ASME Code Section XI, Appendix I requirement from which procedure SCANA-UT-98-13 is based. If supplements apply, please discuss which supplements were used. RAI No. 2 Please discuss any plant-specific operating experience regarding potential degradation in welds CGE-2-1110-1 B/1 and CGE-2-1110-1 B/2, such as stress corrosion

cracking, fatigue cracking, and general corrosion.

Enclosure February 18, 2016 Mr. George A Lippard, Ill Vice President, Nuclear Operations South Carolina Electric

& Gas Company Virgil C. Summer Nuclear Station Post Office Box 88, Mail Code 800 Jenkinsville, SC 29065

SUBJECT:

VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 -REQUEST FOR ADDITIONAL INFORMATION (CAC NO. MF7085)

Dear Mr. Lippard:

By letter dated January 20, 2015, the South Carolina Electric

& Gas Company (SCE&G, the licensee) submitted a relief request for Virgil C. Summer, Unit 1, for the third ten-year inservice inspection interval.

The licensee requested relief from the examination requirements of Section XI of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) applicable to ASME Code Class 1 piping welds and ASME Code Class 2 vessel welds. The scope of this letter is for the two ASME Code Class 2 vessel welds, CGE-2-1110-1 B/1 and CGE-2-1110-1 B/2, in the residual heat removal heat exchanger shell. The NRC staff has determined that additional information is needed to continue the review as discussed in the Enclosure.

We request that SCE&G respond to these RAls 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.

Docket No. 50-395

Enclosure:

Sincerely, IRA/ Shawn Williams, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC RidsNrrDorlDpr Resource RidsNrrLASFigueroa Resource

DDijamco, NRR LPL2-1 R/F RidsNrrDorllpl2-1 Resource RidsNrrDRA Resource ADAMS A ccess1on N o.: ML 16042A471

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