ML13248A107

Proposed License Amendment Request Regarding Temporary Service Water Jumper to the Component Cooling Heat Exchangers Correction of Identified Discrepancy

ML13248A107
Person / Time
Site:	Surry
Issue date:	09/03/2013
From:	Grecheck E S Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
13-311A
Download: ML13248A107 (3)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 September 3, 2013 10 CFR 50.90 Attention:

Document Control Desk Serial No.: 13-31 1A U.S. Nuclear Regulatory Commission SPS-LIC/CGL RO Washington, D.C. 20555-0001 Docket Nos.: 50-280/281 License Nos.: DPR-32/37 VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 PROPOSED LICENSE AMENDMENT REQUEST REGARDING TEMPORARY SERVICE WATER JUMPER TO THE COMPONENT COOLING HEAT EXCHANGERS CORRECTION OF IDENTIFIED DISCREPANCY By letter dated September 26, 2012 (Serial No.12-615), Virginia Electric and Power Company (Dominion) requested an amendment in the form of changes to the Technical Specifications (TS) to Facility Operating Licenses DPR-32 and DPR-37 for Surry Power Station Units 1 and 2, respectively.

The proposed amendments establish the requirements for the use of a temporary supply line (jumper) to provide service water (SW) to the component cooling heat exchangers (CCHXs). Use of the temporary SW jumper is required to facilitate planned maintenance activities (i.e., cleaning, inspection, repair (as needed), and recoating (as needed)) on the existing, single, concrete-encased SW supply piping to the CCHXs.In support of the proposed license amendment request (LAR), a discussion of the Probabilistic Risk Assessment (PRA) Technical Adequacy was provided in Attachment 4 of the September 26, 2012 letter. On page 2 of 18 of the attachment it states, "The [PRA] model has been updated to address all Category A, B, and D facts and observations (F&Os). There are only 3 Category C F&Os that need to be addressed:..." However, subsequent to the preparation of a PRA technical adequacy review for a separate LAR, it was recognized that a Category B F&O should have also been identified in the September 26, 2012 letter for the temporary SW jumper LAR as follows: F&O Description Significance Importance to Applications IE-5 Determine if an ISLOCA pathway B The increase in CDF and LERF caused by a leak in the RCP associated with this scenario is thermal barrier heat exchanger expected to be negligible based on and a failure to isolate the CCW the low frequency of the initiating lines that provide cooling water event and the redundancy in to the heat exchanger is isolating the leak. Therefore, this applicable to Surry model and gap has no impact on the results address it appropriately, for this application.

Aooc W "-

Serial No. 13-311A Docket Nos. 50-280/281 Correction to Temporary SW Jumper to CCHXs LAR Page 2 of 3 At the time of the preparation of the temporary SW jumper LAR, this Category B F&O had been qualitatively evaluated and determined to have a negligible impact; however, the PRA model has not been updated to address this F&O. Since it has been determined that the identified Category B F&O has negligible impact, the conclusion that the Surry PRA model is technically adequate is unchanged.

The information provided in this letter does not affect the conclusion of the significant hazards consideration or the environmental assessment discussion in the Dominion letter dated September 26, 2012 (Serial No.12-615).Dominion continues to request approval of the proposed license amendments by September 30, 2013 with a 30-day implementation period.If you have any questions, please contact Mr. Gary Miller at (804) 273-2771.Sincerely, E. S. Grecheck Vice President

-Nuclear Engineering and Development Commitments made in this letter: None ----Notary Public Commonwealth of Virginia COMMONWEALTH OF VIRGINIA 140542 M)Commission Expires May 31, 2014 COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by E. S Grecheck, who is Vice President

-Nuclear Engineering and Development, of Virginia Electric and Power Company. He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of the Company, and that the statements in the document are true to the best of his knowledge and belief.,z7 Acknowledged before me this 3!Zday of .2013.My Commission Expires:/',.

00/0....Notary PuDlic Serial No. 13-311A Docket Nos. 50-280/281 Correction to Temporary SW Jumper to CCHXs LAR Page 3 of 3 cc: Region II Administrator U. S. Nuclear Regulatory Commission Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 State Health Commissioner Virginia Department of Health James Madison Building -7 th floor 109 Governor Street, Suite 730 Richmond, Virginia 23219 Ms. K. Cotton Gross NRC Project Manager Surry U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 G-9A 11555 Rockville Pike Rockville, MD 20852-2738 Dr. V. Sreenivas NRC Project Manager North Anna U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 G-9A 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Surry Power Station