ML17291A325

Annual Submittal of Technical Specification Bases Changes Pursuant to Technical Specifications 5.5.13.d

ML17291A325
Person / Time
Site:	North Anna
Issue date:	10/12/2017
From:	Standley B Dominion Energy Virginia, Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML17291A325 (4)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 October 12, 2017 U.S. Nuclear Regulatory Commission Serial No.17-395 Attention: Document Control Desk NAPS/RAP RO Washington, D.C. 20555 Docket Nos. 50-338 50-339 License Nos. NPF-4 NPF-7 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1AND2 ANNUAL SUBMITTAL OF TECHNICAL SPECIFICATION BASES CHANGES PURSUANT TO TECHNICAL SPECIFICATION 5.5.13.d Pursuant to Technical Specification 5.5.13.d, "Technical Specifications (TS) Bases Control Program," Dominion Energy Virginia hereby submits the changes to the Bases of the Technical Specifications implemented during the period of October 1, 2016 through September ~O, 2017. A summary of these changes is provided in Attachment

1. Enclosed is an electroni_c copy (CD) of the entire TS Bases through Revision 61 for your information.

Bases changes to the Technical Specifications that were submitted to the NRC for information along with the associated License Amendment Request transmittals, submitted pursuant to 10CFR50.90, were also reviewed and approved by the Facility Safety Review Committee. These changes have been implemented with the respective License Amendments. A summary of these changes is provided in Attachment 1.

If you have any questions regarding this submittal, please contact Mr. Donald R. Taylor at (540) 894-2100.

Sincerely, dCS~

B. E. Standley Director, Nuclear Safety and Licensing

Attachment

1. Summary of TS Bases Changes Associated with License Amendments Enclosure - CD of Current TS Bases (Revision 61)

Commitments made in this letter: None cc: U.S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Avenue, NE, Suite 1200 Atlanta, Georgia 30303-1257 Mr. J. E. Reasor, Jr. (without Enclosure)

Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd.

Suite 300 Glen Allen, Virginia 23060 State Health Commissioner (without Enclosure)

Virginia Department of Health James Madison Building - ]1h Floor 109 Governor Street Room 730 Richmond, Virginia 23219 Mr. J. R. Hall NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 08 B-1A Rockville, Maryland 20852-2738 Ms. K. R. Cotton Gross NRC Project Manager U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 08 G-9A Rockville, Maryland 20852-2738 NRC Senior Resident Inspector (without Enclosure)

North Anna Power Station

ATTACHMENT 1

SUMMARY

OF TS BASES CHANGES ASSOCIATED WITH LICENSE AMENDMENTS VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1 AND 2

SUMMARY

OF TS BASES CHANGES ASSOCIATED WITH LICENSE AMENDMENTS Heat Flux Hot Channel Factor (FQ{Z))

Technical Specification 3.2.1, Heat Flux Hot Channel Factor (Fa(Z)), was modified to enhance the Required Actions to be taken in the event that transient Fa(Z) surveillance limits are not met to address concerns identified in Westinghouse communications NSAL-09-5 Rev. 1 and NSAL-15-1. The changes define separate terms, action steps and surveillance requirements for steady-state and transient Fa(Z), denoted as FaE(Z) and FaT(Z), respectively. The use of separate surveillance requirements (SR) in this manner is consistent with Westinghouse Standard Technical Specifications, NUREG-1431, Rev. 4. The revised surveillance requirements provide guidance for application and determining the magnitude of a penalty factor for the measured Fa(Z). The factor will be applied if the trend in measured values indicates decreasing margin to the applicable limit since performing the previous surveillance or if the trend in predicted values indicates decreasing margin to the applicable lin:iit prior to the next required surveillance. The changes specify that this factor will be defined in the Core Operating Limits Report (COLR), which allows specific numerical values of the factor to be evaluated for each reload core. The Bases for TS 3.2.1 were modified to address the above changes.

The Bases changes noted above were submitted to the NRC by Dominion submittal dated December 10, 2015 and incorporated into the Bases for North Anna Units 1 and 2 on August 31, 2017 upon NRC approval and implementation of the associated Technical Specification changes (Amendment 278 for Unit 1 and Amendment 261 for Unit 2 issued on October 17, 2016).