ONS-2013-016, Response to Request for Additional Information (RAI) Regarding License Amendment Request to Update Pressure-Temperature Limit Curves License Amendment Request (LAR) No. 2012-10, Supplement 2

Response to Request for Additional Information (RAI) Regarding License Amendment Request to Update Pressure-Temperature Limit Curves License Amendment Request (LAR) No. 2012-10, Supplement 2

ML13305A120
Person / Time
Site:	Oconee
Issue date:	10/25/2013
From:	Batson S Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ONS-2013-016 LAR 2012-010, Suppl. 2
Download: ML13305A120 (3)

Text

DUKE Scott L Baton ENERGY, Vice President Oconee Nuclear Station Duke Energy ONOIVP 17800 Rochester H"y Seneca, SC 29672 ONS-2013-016 o: 864.873,3274 f, 864.873. 4208 Scott.Batson@duke-energy.com 10 CFR 50.90 October 25, 2013 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852-2746

Subject:

Duke Energy Carolinas, LLC Oconee Nuclear Station (ONS), Units 1, 2, and 3 Docket Numbers 50-269, 50-270, and 50-287 Renewed Operating License Numbers DPR-38, DPR-47, and DPR-55 Response to Request for Additional Information (RAI) regarding License Amendment Request to Update Pressure-Temperature Limit Curves License Amendment Request (LAR) No. 2012-10, Supplement 2 On February 22, 2013, Duke Energy Carolinas, LLC (Duke Energy) submitted a License Amendment Request (LAR) requesting the Nuclear Regulatory Commission (NRC) approve new pressure-temperature (P-T) limit curves applicable to 54 effective full power years (EFPY) to replace the 33 EFPY P-T limit curves in Technical Specification (TS) 3.4.3 and approve changes to the operational requirements for unit heatup and cooldown in TS Tables 3.4.3-1 and 3.4.3-2. By letter dated June 21, 2013, the NRC requested Duke Energy to provide additional information associated with the LAR. By electronic mail dated August 16, 2013, the NRC granted an extension to the due date for this response to September 10, 2013. This extension allowed Duke Energy time to investigate an AREVA NP, Inc. (AREVA) notification made on August 16, 2013, associated with a potential deficiency in the current 33 EFPY and proposed 54 EFPY P-T limit curves for ONS Unit 3 and confirm it did not impact the RAI response.

By letter dated September 10, 2013, Duke Energy responded to the June 21, 2013, RAI and advised the NRC that the potential deficiency did not impact the RAI responses but did result in the need to revise the existing 33 EFPY P-T curves and the proposed 54 EFPY P-T curves for ONS Unit 3. The 33 EFPY P-T curves have been revised and their use is being controlled administratively until such time that the 54 EFPY P-T curves are approved and implemented at ONS. The marked up and retyped TS pages with corrected 54 EFPY P-T curves for ONS Unit 3 are provided in Attachments 1 and 2, respectively. AREVA Topical Report ANP-3127, which provides the technical basis for the proposed change, has been revised to include the corrected ONS Unit 3 P-T Curves and updated assumptions, and is provided in Enclosure 1.

www.duke-energy.com Enclosure 4 to this letter contains proprietaryinformation.

Withhold From Public Disclosure Under 10 CFR 2.390.

Upon removal of Enclosure 4 this letteris uncontrolled. {

Nuclear Regulatory Commission October 25, 2013 Page 2 During a Duke Energy/NRC Conference call on September 19, 2013, NRC Staff requested Duke Energy submit the plant specific Appendix G analysis mentioned in the response to the third bullet of RAI 1. Enclosures 3 and 4, which are non-proprietary and proprietary respectively, provide the requested information. Enclosure 4 contains information that has been classified as proprietary by AREVA. The affidavit in Enclosure 2 provides the AREVA basis on which the proprietary information may be withheld from public disclosure by the NRC pursuant to 10 CFR 2.390. There are no Regulatory Commitments associated with this submittal.

If there are any additional questions, please contact Boyd Shingleton, ONS Regulatory Affairs, at (864) 873-4716.

I declare under penalty of perjury that the foregoing is true and correct. Executed on October 25, 2013.

Sincerely, Scott L. Batson Vice President Oconee Nuclear Station Enclosures

1. AREVA Topical Report ANP-3127, Revision 2, "Oconee Nuclear Station Units 1, 2 & 3 Pressure-Temperature Limits at 54 EFPY," September 2013.

2. Affidavit for Enclosure 4.

3. AREVA Document No. 32-9212003-000, "LST considering RCS Piping and RVCH Limit for B&W Plant Designs," September 2013 - Non-Proprietary Version.

4. AREVA Document No. 32-9208072-001, "LST considering RCS Piping and RVCH Limit for B&W Plant Designs," September 2013 - Proprietary Version.

Attachments:

1. Marked up TS Pages

2. Retyped TS Pages Enclosure 4 to this letter containsproprietaryinformation.

Withhold From Public Disclosure Under 10 CFR 2.390.

Upon removal of Enclosure 4 this letter is uncontrolled.

Nuclear Regulatory Commission October 25, 2013 Page 3 cc w/

Enclosures:

Mr. Victor McCree, Regional Administrator U. S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, GA 30303-1257 Mr. Richard Guzman, Senior Project Manager (by electronic mail only)

Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop O-8G9A Rockville, MD 20852 Mr. Eddy Crowe Senior Resident Inspector Oconee Nuclear Site Ms. Susan E. Jenkins, Manager Radioactive & Infectious Waste Management Division of Waste Management South Carolina Department of Health and Environmental Control 2600 Bull St.

Columbia, SC 29201 Enclosure 4 to this letter contains proprietaryinformation.

Withhold From Public Disclosure Under 10 CFR 2.390.

Upon removal of Enclosure 4 this letter is uncontrolled.