CNS-15-022, Request to Use a Portion of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section Xl, for Inservice Inspection Activities

Request to Use a Portion of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section Xl, for Inservice Inspection Activities

ML15077A061
Person / Time
Site:	Catawba
Issue date:	03/16/2015
From:	Henderson K Duke Energy Carolinas, Duke Energy Corp
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNS-15-022
Download: ML15077A061 (3)

Text

j/n I-Kelvin Henderson DUKE. Vice President ENERGY, Catawba Nuclear Station Duke Energy CNO1VP 1 4800 Concord Road York, SC 29745 o: 803.701.4251 CNS-15-022 f: 803.701.3221 March 16, 2015 10 CFR 50.55a U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001

Subject:

Duke Energy Carolinas, LLC (Duke Energy)

Catawba Units 1 and 2 Docket Numbers 50-413 and 50-414 Request to Use a Portion of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section Xl, for Inservice Inspection Activities Pursuant to 10 CFR 50.55a(g)(4)(iv) and in accordance with the guidance provided in NRC Regulatory Issue Summary (RIS) 2004-12, dated July 28, 2004, Duke Energy hereby requests NRC approval to use the ASME Boiler and Pressure Vessel Code,Section XI, 2007 Edition with the 2008 Addenda in lieu of the 1998 Edition with the 2000 Addenda requirements for inservice inspection of Class 1 pressure retaining welds in valve bodies.

This request is being made for the third ten-year inservice inspection intervals for both Units 1 and 2. The applicable ASME Section XI Code of Record for these inspection intervals is the 1998 Edition with the 2000 Addenda.

" The Unit 1 third inservice inspection interval began on June 29, 2005 and is currently scheduled to end on June 29, 2016.

• The Unit 2 third inservice inspection interval began on October 15, 2005 and is currently scheduled to end on February 19, 2017.

Per this letter, Duke Energy is requesting to use the ASME Boiler and Pressure Vessel Code,Section XI, 2007 Edition with the 2008 Addenda in lieu of the requirement to examine Class 1 pressure retaining welds in valve bodies in accordance with the ASME Code, Section Xl, 1998 Edition with the 2000 Addenda, Table IWB-2500-1, Examination .Category B-M-1. This request is being made because using the 2007 Edition with the 2008 Addenda of Section XI will eliminate the need to perform the Category B-M-1 examinations, thereby eliminating the radiological dose that would otherwise be incurred by performing these examinations.

As noted in RIS 2004-12, licensees seeking to use later editions and addenda of the ASME Code,Section XI, pursuant to 10 CFR 50.55a(f)(4)(iv) or 10 CFR 50.55a(g)(4)(iv), are not required to request an alternative pursuant to 10 CFR 50.55a(a)(3) (now 10 CFR 50.55a(z)), or to request relief pursuant to 10 CFR 50.55a(f)(5)(iv) or 10 CFR 50.55a(g)(5)(iv). RIS 2004-12 also notes that the regulations do not specify when a licensee must submit a letter requesting www.duke-energy.com

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U.S. Nuclear Regulatory Commission Page 2 March 16, 2015 approval to use later editions and addenda of the Code, only that the letter must be submitted before using the proposed later Code edition and addenda. Therefore, Duke Energy plans to use the proposed later Code edition and addenda for the specific application noted upon submittal of this letter.

There are no related requirements associated with the proposed later Code edition and addenda for consideration associated with this request.

There are no NRC commitments contained in this letter. If you have any questions concerning this request, please contact L.J. Rudy at (803) 701-3084.

Very truly yours, Kelvin Henderson Vice President, Catawba Nuclear Station LJR/s

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U.S. Nuclear Regulatory Commission Page 3 March 16, 2015 xc:

V.M. McCree Regional Administrator U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, GA 30303-1257 G.A. Hutto, III NRC Senior Resident Inspector Catawba Nuclear Station G.E. Miller (addressee only)

NRC Project Manager (Catawba)

U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 8 G9A 11555 Rockville Pike Rockville, MD 20852-2738