ML13150A071

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Verbal Authorization of Relief Request I3R-11 for Reactor Vessel Closure Head Penetration Nozzel Repair Inservice Inspection Program - Third 10-Year Interval
ML13150A071
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 05/31/2013
From: Billoch-Colon A
Plant Licensing Branch II
To: Jessie Quichocho
Plant Licensing Branch II
Billoch-Colon, Araceli NRR/DORL/LPLII-2
References
TAC ME1876
Download: ML13150A071 (4)


Text

May 31, 2013 MEMORANDUM TO: Jessie F. Quichocho, Chief Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Araceli T. Billoch Colón, Project Manager /RA/

Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - VERBAL AUTHORIZATION OF RELIEF REQUEST I3R-11 FOR REACTOR VESSEL CLOSURE HEAD PENETRATION NOZZLE REPAIR INSERVICE INSPECTION PROGRAM - THIRD 10-YEAR INTERVAL (TAC NO. ME1876)

By letter dated May 22, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13143A167), Carolina Power and Light (the licensee), doing business as Duke Energy, submitted Relief Request I3R-11, Reactor Vessel Closure Head Nozzle Repair Inservice Inspection Program - Third 10-year Interval for Shearon Harris Nuclear Power Plant, Unit 1. Pursuant to Title 10 of the Code of Federal Regulations (10 CFR), Section 50.55a, the licensee requested the U.S. Nuclear Regulatory Commission (NRC) approval of an alternative for the repair examination requirements of the American Society of Mechanical Engineers (ASME) Code associated with a reactor vessel closure head nozzle penetration.

By letter dated May 29, 2013 (ADAMS Accession No. ML13150A104), the licensee submitted its response to the NRCs staff request for additional information. The licensee proposed to use the alternatives in ASME Code,Section XI, Code Case N-638-1, and Code Case N-729-1 to complete the repair procedures and nondestructive evaluation examinations.

The NRC staff reviewed the licensees submittal and determined that the proposed alternative will provide an acceptable level of quality and safety. During a conference call with the licensee on May 30, 2013, the NRC staff granted a verbal authorization on the use of Relief Request I3R-11 in accordance with 10 CFR 50.55a(a)(3)(i). The script for the verbal authorization is enclosed.

NRC

Participants:

Licensee

Participants:

J. Quichocho J. Caves J. Tsao D. Corlett J. Collins M. Denny R. Wolfgang C. Miller A. Billoch Colón Docket No. 50-400

Enclosure:

Verbal Authorization Script

ML13150A104), the licensee submitted its response to the NRCs staff request for additional information. The licensee proposed to use the alternatives in ASME Code,Section XI, Code Case N-638-1, and Code Case N-729-1 to complete the repair procedures and nondestructive evaluation examinations.

The NRC staff reviewed the licensees submittal and determined that the proposed alternative will provide an acceptable level of quality and safety. During a conference call with the licensee on May 30, 2013, the NRC staff granted a verbal authorization on the use of Relief Request I3R-11 in accordance with 10 CFR 50.55a(a)(3)(i). The script for the verbal authorization is enclosed.

NRC

Participants:

Licensee

Participants:

J. Quichocho J. Caves J. Tsao D. Corlett J. Collins M. Denny R. Wolfgang C. Miller A. Billoch Colón Docket No. 50-400

Enclosure:

Verbal Authorization Script DISTRIBUTION:

PUBLIC LPL2-2 R/F RidsNrrPMShearonHarris RidsNrrLABClayton RidsNrrDorlLpl2-2 RidsNrrDeEpnb RidsRgn2MailCenter ADAMS Accession No.: ML13150A071 OFFICE LPL2-2/PM LPL2-2/LA LPL2-2/BC LPL2-2/PM NAME ABillochColón BClayton JQuichocho (FSaba for) ABillochColón DATE 05/31/13 05/31/13 05/31/13 05/31/13 VERBAL AUTHORIZATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION FOR RELIEF REQUEST I3R-11: REACTOR VESSEL CLOSURE HEAD PENETRATION NOZZLE REPAIR INSERVICE INSPECTION PROGRAM - THIRD 10-YEAR INTERVAL SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 Script read by Robert Wolfgang, Acting Chief of the Office of Nuclear Reactor Regulations Component Performance, Nondestructive Examination, and Testing Branch on May 30, 2013, to the staff of Carolina Power & Light Company (CP&L), with CP&L staff attendance coordinated by Araceli T. Billoch Colón from the U.S. Nuclear Regulatory Commission (NRC)

By letter to the NRC dated May 22, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13143A167), as supplemented by letter dated May 29, 2013 (ADAMS Accession No. ML13150A104) CP&L (the licensee), doing business as Duke Energy, submitted Relief Request (RR) I3R-11 for the repair of the degraded reactor vessel closure head penetration nozzle No. 49 for the Shearon Harris Nuclear Power Plant, Unit 1 (Harris). In RR I3R-11, the licensee proposed to use the inside diameter temper bead welding method to repair the degraded nozzle No. 49 in accordance with American Society of Mechanical Engineers (ASME) Code Case N-638-1 and N-729-1 in lieu of the requirements of ASME, Sections III and XI, and the original Construction Code.

The NRC staff has determined that the proposed repair will restore the pressure boundary and provide reasonable assurance that the structural integrity of the repaired reactor vessel closure head penetration nozzle No. 49 will be maintained for a period of time that exceeds the inspection interval mandated by ASME Code Case N-729-1 with conditions set forth in Section 50.55a(g)(6)(ii)(D) of the Code of Federal Regulations (10 CFR).

The NRC staff finds that the proposed alternative provides an acceptable level of quality and safety. Accordingly, the NRC staff concludes that the licensee has adequately addressed all of the regulatory requirements set forth in 10 CFR 50.55a(a)(3)(i).

Script read by Jessie F. Quichocho, Chief of the Office of Nuclear Reactor Regulations Plant Licensing Branch II-2 during the same conference call to Carolina Power & Light Company As Chief of the Office of Nuclear Reactor Regulations Plant Licensing Branch II-2, I concur with the Component Performance, Nondestructive Examination, and Testing Branchs conclusions.

Effective May 30, 2013, the NRC staff authorizes the proposed alternative at Harris for the reactor vessel head penetration repair described in RR I3R-11. The inspection provision of RR I3R-11 in accordance with the requirements of ASME Code Case N-729-1 with conditions set forth in 10 CFR 50.55a(g)(6)(ii)(D) is authorized.

All other requirements of ASME Code,Section XI, and 10 CFR 50.55a(g)(6)(ii)(D) for which relief was not specifically requested and authorized by the NRC staff remain applicable, including the third party review by the Authorized Nuclear In-service Inspector.

Enclosure

This verbal authorization does not preclude the NRC staff from asking additional clarification questions regarding RR I3R-11 while preparing the subsequent written safety evaluation. The NRC staffs goal is to issue the written safety evaluation within 150 days from today in accordance with the Office of Nuclear Reactor Regulation standards.