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Category:Letter
MONTHYEARIR 05000280/20244012024-02-0606 February 2024 Security Baseline Inspection Report 05000280/2024401, 05000281/2024401 and 07200002/2024401 ML24032A1112024-02-0101 February 2024 Owner'S Activity Report for North Anna, Unit 2, Refueling Outage N2R29 - First Period of the Fifth ISI Interval ML24030A7522024-01-30030 January 2024 Technical Specification Bases Pages IR 05000336/20234022024-01-30030 January 2024 Security Baseline Inspection Report 05000336/2023402 and 05000423/2023402 (Cover Letter Only) ML23312A1922024-01-18018 January 2024 Issuance of Amendment Nos. 316 & 316 Regarding a Risk Informed Approach for Tornado Classification of the Fuel Handling Trolley Support Structure IR 05000280/20230102024-01-18018 January 2024 Age Related Degradation Inspection Report 05000280-2023010 and 05000281-2023010 ML24032A4662024-01-16016 January 2024 Response to Comments on Draft Vpdes Permit No. VA0052451 ML23341A0172024-01-12012 January 2024 Issuance of Amendment No. 288 Revision to Applicability Term for Reactor Coolant System Heatup and Cooldown Pressure-Temperature Limitations Figures IR 05000336/20234402024-01-11011 January 2024 Special Inspection Report 05000336/2023440 and 05000423/2023440 (Cover Letter Only) ML24017A0802024-01-11011 January 2024 Notification of Licensed Operator Initial Examination 05000338/2024301 and 05000339/2024301 ML24003A8502024-01-0909 January 2024 Letter to Wenonah Haire, Thpo, Catawba Indian Nation, Notice of Availability of the Draft Site-Specific EIS for North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8492024-01-0909 January 2024 Letter to W. Frank Adams, Chief, Upper Mattaponi Tribe Re Re Notice of Availability of the Draft Site-Specific Environmental Impact Statement for North Anna Power Station Subsequent License Renewal ML23332A7272024-01-0909 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8352024-01-0909 January 2024 Letter to Acee Watt, Thpo, United Keetoowah Band of Cherokee Indians in Oklahoma Re Notice of Availability of the Draft Site-Specific Environmental Impact Statement for North Anna Power Station Subsequent License Renewal ML24003A8362024-01-0909 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8372024-01-0909 January 2024 Letter to Elizabeth Toombs, Thpo, Cherokee Nation, Notice of Availability of the Draft Site-Specific EIS for North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8382024-01-0909 January 2024 Letter to G. Anne Richardson, Chief, Rappahannock Tribe, Inc., Notice of Availability of Draft Site-Specific Environmental Impact Statement for North Anna Power Station Units 1 and 2, Subsequent License Renewal ML24003A8392024-01-0909 January 2024 Letter to Gerald Stewart, Chief, Chickahominy Indian Tribe, Eastern Division Re Re Notice of Availability of the Draft Site-Specific Environmental Impact Statement for North Anna Power Station Subsequent License Renewal ML24003A8402024-01-0909 January 2024 Letter to Katelyn Lucas, Thpo, Delaware Nation, Oklahoma, Notice of Availability of Draft Site-Specific Environmental Impact Statement for North Anna Power Station Units 1 and 2, Subsequent License Renewal ML24003A8412024-01-0909 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8422024-01-0909 January 2024 Letter to Paul Barton, Thpo, Eastern Shawnee Tribe of Oklahoma, Notice of Availability of Draft Site-Specific Environmental Impact Statement for North Anna Power Station Units 1 and 2, Subsequent License Renewal ML24003A8482024-01-0909 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8432024-01-0909 January 2024 Letter to Robert Gray, Chief, Pamunkey Indian Tribe, Notice of Availability of the Draft Site-Specific EIS for North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8442024-01-0909 January 2024 Letter to Russell Townsend, Thpo, Eastern Band of Cherokee Indians ML24003A8452024-01-0909 January 2024 Letter to Stephen Adkins, Chief, Chickahominy Indian Tribe, Notice of Availability of Draft Site-Specific Environmental Impact Statement for North Anna Power Station Units 1 and 2, Subsequent License Renewal ML24003A8462024-01-0909 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML24003A8472024-01-0909 January 2024 Letter to Tom Jonathan, Chief, Tuscarora Nation, Notice of Availability of the Draft Site-Specific EIS for North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML23332A0872024-01-0404 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML23332A1852024-01-0404 January 2024 Notice of Availability of the Draft Site-Specific Environmental Impact Statement for the North Anna Power Station, Units 1 and 2, Subsequent License Renewal ML23360A6352024-01-0404 January 2024 Letter to Dominion Availability for North Anna Units 1 and 2 Draft Site Specific Environmental Impact Statement ML24004A1052024-01-0404 January 2024 Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000336/2024010 & 05000423/2024010 ML24003A9022024-01-0303 January 2024 Stations, Units 1 and 2, Emergency Plan Revision - Relocation of the Technical Support Center (TSC) - Editorial Correction IR 05000280/20233012023-12-28028 December 2023 NRC Operator License Examination Report 05000280/2023301 and 05000281/2023301 ML23332A1472023-12-21021 December 2023 Issuance of Environmental Scoping Summary Report Associated with the Staff'S Review of the North Anna Power Station, Units 1 and 2, Subsequent License Renewal Application ML23361A0942023-12-21021 December 2023 Response to Request for Additional Information Regarding Proposed License Amendment Request to Revise Technical Specifications for Reactor Core Safety Limits, Fuel Assemblies and Core Operating Limits Report . ML23283A3052023-12-20020 December 2023 Review of Appendix F to DOM-NAF2, Qualification of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion Energy VIPRE-D Computer Code (EPID L-2022-LLT-0003) (Nonproprietary) ML23361A0312023-12-20020 December 2023 Intent to Pursue Subsequent License Renewal ML23352A0202023-12-18018 December 2023 Senior Reactor and Reactor Operator Initial License Examinations ML23352A3692023-12-18018 December 2023 Associated Independent Spent Fuel Storage Installation, Revision to Emergency Plan Report of Change ML23346A0972023-12-11011 December 2023 License Amendment Request to Revise the Emergency Plan Relocation of the Technical Support Center - Response to NRC Request for Additional Information ML23346A1022023-12-11011 December 2023 2024 North Anna Power Station Brq Inspection Notification Letter 2024-02-06
[Table view] Category:Part 21 Correspondence
MONTHYEARML19008A0432019-01-0404 January 2019 Third Interim Notification Per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11KLVS146 ML18361A5802018-12-19019 December 2018 Stations, Units 1 & 2 - Part 21 Report Providing Updated Anchor Darling Double Disc Gate Valve Information and Repair Status ML15224A5432015-08-10010 August 2015 Part 21 Interim Report - Notification of Pressure Seal Valve Yoke Material Compliance ML15223B2642015-08-0606 August 2015 Part 21 Report - Notification of Deviation Regarding Hk Circuit Breaker Pivot Pin ML15105A3462015-03-23023 March 2015 NSAL-15-2 - Impact of a Break in the Reactor Coolant Pump No. 1 Seal Leak-off Line Piping on Seal Leakage During a Loss of Seal Cooling Event ML15022A6502015-01-20020 January 2015 Letter from Steven R. Eisenberg USNRC 10CFR Part 21 Notification ML13044A0752013-02-0808 February 2013 Part 21 - Completed Evaluation for Potential Error in Main Steam Line High Flow Calculational Methodology ML1000700732009-11-19019 November 2009 USNRC 10CFR Part 21 Notification - Flowserve Figure 848 Disk/Disk Nut Separation ML0501102232005-01-0707 January 2005 Non-Emergency Event Report, Overstress Condition on Single Failure Proof Crane Trolleys ML0320604292003-07-21021 July 2003 Notification of Possible Defect Associated with Thermo Westronics Model 2100C Series Recorders ML0215601132002-05-10010 May 2002 Letter from W. G. Hampton Subject: 10CFR21 Notification - Potential Defect Involving Fan Assemblies Use in Forced Air Cooled Uninterruptible Power Supply Systems 2019-01-04
[Table view] |
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Dominion Energy Services. Inc. .
-5000 Dominion Boulevard, Glen Allen, VA 23060 ~ Domil"IIOn Domini~nEnergy.com * ** ~ Energy December 19, 2018 10 CFR Part 21 United States Nuclear Regulatory Commission Serial No.: 18-238 Attention: Document Control Desk NRA/GDM: R9 Washington, D.C. 20555_-0001 Docket Nos.: 50-336 50-338/339 50-280/281 License Nos:: DPR-65 NPF-4/7 DPR-32/37 VIRGINIA ELECTRIC. AND POWER COMPANY (DOMNION ENERGY VIRGINIA}
DOMINION ENERGY NUCLEAR CONNECTICUT, INC. .
MILLSTONE POWER STATION UNIT 2 .
NORTH ANNA AND SURRY POWER STATIONS UNITS 1 AND 2 UPDATED ANCHOR DARLING DOUBLE DISC GATE VALVE INFORMATION AND REPAIR STATUS
References:
- 1) Letter from Virginia Electric and Power Company and Dominion Nuclear Connecticut, _Inc., to the US NRC dated December 18, 2017 (Serial No. 17-343A), for Millstone Power Station Units 2 and 3, North Anna and Surry Power Stations Units 1 and 2, "Anchor Darling Double Disc Gate Valve lnforniation and Status" [ADAMS Accession
ML17362A043] .
- 2) Letter from Virginia Electric and Power Company and Dominion Nuclear Connecticut, Inc., to the US NRC dated August 31, 2017 (Serial No.17-343), for Millstone Power Station Units 2 and 3, North Anna and Surry Power Stations Units 1 and 2, "Commitments for Resolution of Anchor Darling Double Disc Gate Valve Part 21 Issues"
[ADAMS Accession No. ML17250A157]
- 3) BWROG Topical Report TP-16-1-112, Revision 4, "Recommendations to Resolve Flowserve 10 CFR Part 21 Notification Affecting Anchor Darling Double Disc Gate Valve Wedge Pin Failure" [ADAMS Accession No. ML17243A137]
- 4) Part 21 Notification from Flowserve Corporation, "Part 21 - Wedge Pin Failure in Anchor Darling Motor Operated Double Disc Gate Valves with Threaded Stem to Upper Wedge Connections," dated March 1, 2013, as modified July 11, 2017 [ADAMS Accession No. ML17194A825]
Serial No.18-238 Docket Nos. 50-336/338/339/280/281 Updated ADDDGV Information and Status Page 2 of 4 In Reference 1, Virginia Electric and Power Company (Dominion Energy Virginia) and Dominion Energy Nuclear Connecticut, Inc. (DE.NC), provided a listing of the Anchor Darling double disc gate valve (ADDDGV) population with active safety functions for Millstone Power Station (MPS) Unit 2 and North Anna and Surry Power Stations (NAPS and SPS, respectively) Units 1 and 2 that are subject to the Flowserve Part 21 (Reference 4). Subsequent to the submittal of Reference 1, an additional ADDDGV on each SPS unit was identified as having an active safety function. Specifically, the SPS Units 1 and 2 Charging Pump Discharge Recirculation Isolation Valves, Mark Nos.
1-CH-MOV-1373 and 2-CH-MOV-2373, respectively, were originally classified as passive valves; however, upon further review the valves were subsequently reclassified as having active safety functions. Consequently, the SPS valve information provided in Reference 1 for the ADDDGVs with active safety functions is hereby amended to include the same information for motor-operated valves (MOVs) 1-CH-MOV-1373 and 2-CH-MOV-2373. The additional information is provided in the attachment.
Reference 1 also included relevant information for each valve listed pursuant to the recommendations provided in Reference 3, as well as the valves' repair status. As noted in Reference 1, repair schedules for the listed valves were not included since our review did not identify any susceptible valves, as defined in Reference 3. Nevertheless, since the Flowserve Part 21 was issued, Dominion Energy Virginia and DENC have repaired several valves subject to the Part 21 at NAPS and SPS, and MPS, respectively, to return them to full qualification. Specifically, three of the twelve NAPS Units 1 and 2 MOVs, nine of the twenty-eight SPS Units 1 and 2 MOVs, and four of the six MPS Unit 2 MOVs have been repaired by installing new high strength lnconel pins, and new stems having integral collars that were torqued into the upper wedges of the repaired MOVs. MOVs categorized as "high risk" were prioritized for repair during the recently completed fall 2018 refueling outages at MPS Unit 2 and SPS Unit 2.
For the valves listed in Reference 1, as well as the two additional SPS
- valves noted above, that have not been repaired, Dominion Energy Virginia and DENC completed performance monitoring as prescribed in Reference 3 including stem rotation checks,
. diagnostic testing, stroke time reviews, wedge pin analyses, etc., with satisfactory results, thus providing reasonable assurance the valves are fully capable of performing their design functions. Additionally, for the valves that have been repaired and internally inspected, the following observations were noted:
- Existing wedge pins were intact with no evidence of damage caused by overloading,
- Threads of the stem-to-wedge connection threaded joint were in good condition with no evidence of excessive wear,
- Stem to wedge connections were found to be dry (unlubricated).
Serial No.18-238 Docket Nos. 50-336/338/339/280/281 Updated ADDDGV Information and Status Page 3 of 4 The condition of the wedge pins and the absence of lubrication on the threaded joints continue to validate stem-to-wedge thread coefficient of friction assumptions made in the susceptibility analysis.
In summary, the valve repairs, inspections, stem rotation checks, and diagnostic test results indicate the ADDDGVs subject to the Part 21 are capable of performing their required safety functions. Dominion Energy Virginia and DENG continue to follow and participate in industry efforts to determine whether any additional actions are required to provide further assurance that plant ADDDGVs subject to the Part 21 will continue to perform their required safety functions.
Should you have any questions or require additional information, please contact Mr. Gary D. Miller at (804) 273-2771.
Respectfully, Mark D. Sartain Vice President - Nuclear Engineering and Fleet Support Virginia Electric and Power Company Dominion Energy Nuclear Connecticut, Inc.
Summary of Regulatory Commitments: None
Attachment:
Anchor Darling Double Disc Gate Valve Information for 01-CH-MOV-1373 and 02-CH-MOV-2373
Serial No.18-238 Docket Nos. 50-336/338/339/280/281 Updated ADDDGV Information and Status Page 4 of 4 cc: U.S. Nuclear Regulatory Commission - Region I 2100 Renaissance Blvd, Suite 100 King of Prussia, Pennsylvania 19406 - 2713 U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 NRC Senior Resident Inspector Millstone Power Station NRC Senior Resident Inspector North Anna Power Station NRC Senior Resident Inspector Surry Power Station Mr. R. Guzman NRC Senior Project Manager - Millstone U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 C2 11555 Rockville Pike Rockville, Maryland 20852-2738 Mr. J. R. Hall NRC Senior Project Manager - North Anna U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 B 1A 11555 Rockville Pike Rockville, Maryland 20852-2738 Ms. A. Schiller NRC Project Manager - Surry U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 07 E5 11555 Rockville Pike Rockville, Maryland 20852-2738 Mr. Marcus Harris Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd., Suite 300 Glen Allen, Virginia 23060
Serial No.18-238 Docket Nos. 50-280/281 Attachment ANCHOR DARLING DOUBLE DISC GATE VALVE INFORMATION FOR 01-CH-MOV-1373 AND 02-CH-MOV-2373 Virginia Electric and Power Company (Dominion Energy Virginia)
Surry Power Station Units 1 and 2
Serial No.18-238 Docket Nos. 50-280/281 Attachment Page 1 of 1 Charging Pump 01-CH-MOV- Yes Yes, >0.10 Yes,::;_5 deg. Yes Not repaired SPS I Charging Discharge Recirculation 3 Both No Low Not Susceptible 1373 Line Isolation Charging Pump 02-CH-MOV- Yes Yes, >0.10 Yes,:,;5 deg. Yes Not repaired SPS 2 Charging Discharge Recirculation 3 Both No Low Not Susceptible 2373 Line Isolation (A) Applied Wedge Pin Torque must bound anticipated design basis operating torque requirements and current maximum total torque.