ML12097A060
| ML12097A060 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/03/2012 |
| From: | Gillespie T Duke Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LAR-10-03 | |
| Download: ML12097A060 (2) | |
Text
Duke T. PRESTON GILLESPIE, JR.
Vice President OEnergy Oconee Nuclear Station Duke Energy ON01 VP / 7800 Rochester Hwy.
10 CFR 50.90 Seneca, SC 29672 April 3, 2012 864-873-4478 864-873-4208 fax T. Gillespie@duke-energy. com U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555-0001
Subject:
Duke Energy Carolinas, LLC Oconee Nuclear Station (ONS), Units 1, 2, and 3 Docket Numbers 50-269, 50-270, and 50-287 Withdrawal of License Amendment Request 2010-03 Associated with the Request to Approve Operation of Reverse Osmosis System during Unit Operation at Oconee On November 15, 2010, Duke Energy Carolinas, LLC (Duke Energy) submitted a License Amendment Request (LAR) to request approval to operate a Reverse Osmosis (RO) System to remove silica from the Borated Water Storage Tanks (BWSTs) and Spent Fuel Pools (SFPs) during Unit Operation at ONS. Duke Energy supplemented the LAR by letters dated February 18, May 12, August 2, October 10, and December 15, 2011. Based on discussions between Duke Energy and the NRC on February 29, 2012, Duke Energy agreed to withdraw and re-submit to facilitate the NRC review and approval of this proposed licensing change.
As such, Duke Energy hereby withdraws LAR 2010-03. Duke Energy plans to submit a new RO System LAR with proposed Technical Specifications. Based on our discussions on February 29, 2012, it is understood that the new LAR will receive an expedited review and approval.
Using the RO System to remove silica from the BWSTs and SFPs will ultimately allow operation at a higher Reactor Coolant System (RCS) pH which will lower the generation and activation of corrosion products in the RCS. The ability to increase the RCS lithium concentration to lower the generation and activation of corrosion products is increasingly important with the transition from the current 18-month fuel cycle to a 24-month fuel cycle. Lower RCS silica levels will also allow continuous zinc addition, which has a long term benefit of lowering dose rates and decreasing corrosion product release rates.
Inquiries on this submittal should be directed to Boyd Shingleton, ONS Regulatory Compliance Group, at (864) 873-4716.
I declare under penalty of perjury that the foregoing is true and correct. Executed on April 3, 2012.
Sincerely, T. Preston Gillespie, Jr., Vice President Oconee Nuclear Station www.duke-energy.comr
Nuclear Regulatory Commission April 3, 2012 Page 2 cc:
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. John Stang, Project Manager Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8 G9A Washington, D. C. 20555 Mr. Andy Sabisch 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