ML23047A329
| ML23047A329 | |
| Person / Time | |
|---|---|
| Site: | 05200017 |
| Issue date: | 02/15/2023 |
| From: | James Holloway Virginia Electric & Power Co (VEPCO) |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| NA3-23-001 | |
| Download: ML23047A329 (1) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 February 15, 2023 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA UNIT 3 Serial No.:
NA3-23-001 NRA/SS RO Docket No.: 52-017 License No.:NPF-103 REPORT OF 10 CFR 50.46 EMERGENCY CORE COOLING SYSTEM (ECCS) MODEL CHANGES General Ele_ctric Hitachi Nuclear Energy (GEH) reported no changes to the ECCS model for the Certified Economic Simplified Boiling Water Reactor (ESBWR) Design in letter M220129 from Michelle P. Catts (GEH) to U. S. Nuclear Regulatory Commission, "ESBWR Design Certification Annual 10 CFR 50.46 Report for 2022," dated October 4, 2022.
The ECCS evaluation model change conclusion provided by GEH is applicable to the North Anna Unit 3 (NA3) Combined Operating License. Therefore, in accordance with 10 CFR 50.46 (a)(3)(ii), this report is being submitted on the NA3 docket. provides the Report of Changes in the GEH ECCS Evaluation Model. provides the 2022 Annual Reporting of 10 CFR 50.46 Margin Utilization for North Anna Unit 3.
If you have any questions regarding this submittal, please contact Mr. Shayan Sinha at (804) 273-4687.
Very truly yours, James E. Holloway Vice President - Nuclear Engineering and Fleet Support Commitments made in this letter: None Attachments:
- 2. 2022 Annual Reporting of 10 CFR 50.46 Margin Utilization - North Anna Unit 3 cc: (electronic distribution, except where noted)
U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Avenue, NE Suite 1200 Atlanta, GA 30303-1257 J. J. Shea, Jr., NRC D. Paylor, VDEQ M. Nichol, NEI M. K. Brandon, DTE R. Westmoreland, DTE Serial No. NA3-23-001 Docket No.52-017 Page 2 of 2
Serial No. NA3-23-001 Docket No.52-017 2022 ANNUAL REPORT OF EMERGENCY CORE COOLING SYSTEM (ECCS)
MODEL CHANGES PURSUANT TO THE REQUIREMENTS OF 10 CFR 50.46 REPORT OF CHANGES IN GEH ECCS EVALUATION MODEL VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA UNIT 3
Serial No. NA3-23-001 Docket No.52-017, Page 1 of 1 REPORT OF CHANGES IN GEH ECCS EVALUATION MODEL North Anna Unit 3 General Electric Hitachi Nuclear Energy (GEH) identified no changes or errors applicable to the ECCS Loss of Coolant Accident (LOCA) TRACG Evaluation Model for North Anna Unit 3 during 2022.
Serial No. NA3-23-001 Docket No.52-017 2022 ANNUAL REPORT OF EMERGENCY CORE COOLING SYSTEM (ECCS)
MODEL CHANGES PURSUANT TO THE REQUIREMENTS OF 10 CFR 50.46 2022 ANNUAL REPORTING OF 10 CFR 50.46 MARGIN UTILIZATION VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA UNIT 3
Serial No. NA3-23-001 Docket No.52-017, Page 1 of 1 Report of Changes in GEH ECCS Evaluation Model Plant Name Utility Name North Anna Unit 3 (Docket 52-017)
Virginia Electric and Power Company Reporting Year: 2022*
Evaluation Model: TRACG Vendor: GE Hitachi LBPCT Net PCT Effect Absolute PCT Effect Analysis of Record Licensing Basis PCT (LBPCT), with prior updates 600°F I.
Prior 10 CFR 50.46 Changes or Error Corrections 2019 TRACG Channel Inlet Subcooling Calculation PCT =
+ 0°F
+ 0°F 2019 TRACG Radiation Heat Transfer Calculation PCT =
+ 0°F
+ 0°F 2017 Fuel Rod Plenum Temperature Update PCT =
+ 0°F
+ 0°F 2021 Non-condensable Gas Error in Zero Cell Side Branch PCT =
+ 0°F
+ 0°F II.
10 CFR 50.46 Changes or Error Corrections for 2022 None PCT =
+ 0°F
+ 0°F Sum of 10 CFR 50.46 Changes PCT =
+ 0°F
+ 0°F Projected LBPCT based on these changes 600°F
- The reporting period is 08/30/2021 through 09/30/2022.