ML16214A262

Supplemental Information Regarding Compliance with EA-12-051 Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation

ML16214A262
Person / Time
Site:	Surry
Issue date:	07/26/2016
From:	Mark D. Sartain Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
14-392C, EA-12-051
Download: ML16214A262 (3)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 July 26, 2016 U.S. Nuclear Regulatory Commission Serial No.: 14-392C Attention: Document Control Desk NRA/DEA: R2 Washington, DC 20555-0001 Docket Nos.: 50-280/281 License Nos.: DPR-32/37 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)

SURRY POWER STATION UNITS 1 AND 2 SUPPLEMENTAL INFORMATION REGARDING COMPLIANCE WITH EA-12-051 ORDER MODIFYING LICENSES WITH REGARD TO RELIABLE SPENT FUEL POOL INSTRUMENTATION On March 28, 2012, the NRC issued EA-12-051, "Order Modifying Licenses with regard to Reliable Spent Fuel Pool Instrumentation," which required the installation of reliable indication for the water level in associated spent fuel storage pools.

Level 1 is one of the three critical levels that must be monitored in a spent fuel pool (SFP); At Level 1, the SFP level instrumentation measures the water level required to support operation of the normal fuel pool cooling system. Calculation MISC-11798, "Dominion Fleet Spent Fuel Pool Levels to Provide Adequate NPSH to the Cooling Pumps with a Saturated Pool," Rev. 0, defined Surry Level 1 as 42 feet 2 inches and verified that adequate water level was available to support net positive suction head (NPSH) to the SFP cooling pumps. Calculation MISC-11798 was subsequently revised (Revision 1) to reflect the presence of an inlet weir/waterbox and Level 1 was redefined as 44 feet 11 inches; also sufficient to support NPSH to the SFP cooling pumps. The results of calculation MISC-11798, Rev. 1 were used to determine the setpoints in O-FSG-11, Alternate SFP Makeup and Cooling.

On July 20, 2015, Dominion notified the staff that Surry Power Station was in compliance with Order EA-12-051 and indicated Level 1 as 42 feet 2 inches (S/N 14;.3928). The purpose of this supplemental information letter is to inform the Commission that the value for Surry Level 1 reported in our compliance letter SIN 14-3928 and other previous submittals incorrectly referenced the initially identified value rather than the final, updated value that was used in O-FSG-11. Thus, this letter corrects the docket by providing the Commission with the current, approved value for Surry Level 1. Surry Level 1 is the indicated level on either the primary or back-up instrumentation of greater than the elevation of 44 feet 11 inches plus the accuracy of the SFP level instrument channel. This level is 45 feet 2 inches (44 feet 11 inches plus 3 inches) and is based on the suction weir/overflow box and an instrument accuracy of 3 inches.

On June 30, 2016, the Surry NRC Project Manager was notified of the discrepancy between the Level 1 value reported in the compliance letter for Order EA-12-051 and other previous submittals and the current approved Level 1 value. The Surry Project Manager, Orders Management Branch, was also notified of the subject discrepancy on July 6, 2016.

Serial No. 14-392C Docket Nos. 50-280/281 Supplemental Info - Compliance with EA-12-051

.,. Page 2 of 3 Should you have any questions or require additional information, please contact Diane Aitken at (804) 273-2694.

Respectfully, Mark Sartain Vice President- Nuclear Engineering Commitment contained in this letter: None COMMONWEALTH OF VIRGINIA COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Mr. Mark D. Sartain, who is Vice President - Nuclear Engineering, 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 that company, and that the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this ~ zray of , 2016.

Serial No. 14-392C Docket Nos. 50-280/281 Supplemental Info - Compliance with EA-12-051

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cc: Director of Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 13H 16M 11555 Rockville Pike Rockville, MD 20852-2738 U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Avenue, NE Suite 1200 Atlanta, GA 30303-1257 Ms. Karen 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 Mrs. Lisa M. Regner U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 011 F1 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Blake A. Purnell U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 012 D20 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Steven R. Jones U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 010 A1 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Milton Valentin NRC Project Manager U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 13H16M 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Surry Power Station