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| {{#Wiki_filter:}} | | {{#Wiki_filter:V.C. Summer Nuclear Station Bradham Blvd & Hwy 215, Jenkinsville, SC 29065 |
| | ~ Dominion Mailing Address: ~ Energy P.O. Box 88, Jenkinsville, SC 29065 Domin ionEnergy.com June 22, 2023 Document Control Desk Serial No. 23-168 U. S. Nuclear Regulatory Commission VCS LIC/JB Rev 0 Washington , DC 20555-0001 Docket No. 50-395 License No. NPF-12 DOMINION ENERGY SOUTH CAROLINA (DESC) |
| | VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT 1 SPECIAL REPORT 2023-002 INOPERABLE LOOSE-PART MONITORING SYSTEM CHANNEL Dominion Energy South Carolina, Inc. (DESC) hereby submits Special Report 2023-002, pursuant to the requirements of Technical Specification (TS) 3.3.3.10 Action a and TS 6.9.2. Th is special report is required by VCSNS TS because Loose-Part Monitoring System (LPMS) Channel 1 has been inoperable for greater than 30 days. |
| | TS 3.3.3.10 requires the LPMS be operable in Modes 1 and 2 (and does not fall under the provisions of 3.0.4) . LPMS Channel 1, monitoring the reactor vessel upper head, was inoperable when VCSNS entered Mode 2 on May 18, 2023. LPMS Channel 1 was declared inoperable due to indication of sensor failure in background trend data. |
| | Reactor Vessel Upper Head LPMS Channel 10 continues to monitor the reactor vessel upper head for loose parts. Channel 1 has been disabled in LPMS. Loss of dual channel coincidence reduces one aspect of the false alarm filtering functionality. The failed transducer for Channel 1 (IAT00751) is planned for repair or replacement during Refuel 28 in Fall 2024. |
| | Should you have any questions, please call Michael S. Moore at (803) 345-4752. |
| | Sincerely, o L. Justice Site Vice President V.C. Summer Nuclear Station Commitments contained in this letter: None cc: G. J. Lindamood - Santee Cooper G. Miller - NRC Project Manager L. Dudes - NRC Region II NRC Resident Inspector}} |
Latest revision as of 11:07, 17 July 2023
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Category:Letter
MONTHYEARIR 05000395/20244042024-09-26026 September 2024 Cyber Security Inspection Report 05000395-2024404 - Public IR 05000395/20244022024-09-10010 September 2024 Security Baseline Inspection Report 05000395/2024402 IR 05000395/20240052024-08-22022 August 2024 Updated Inspection Plan for Virgil C. Summer Nuclear Station - Report 05000395/2024005 ML24190A4012024-08-19019 August 2024 Request for Withholding Information from Public Disclosure Regarding the Subsequent License Renewal Application - Dominion Energy Letter Dated May 30, 2024 IR 05000395/20240022024-08-12012 August 2024 Integrated Inspection Report 05000395/2024002 ML24180A0062024-08-0505 August 2024 Issuance of Amendment No. 227 to Modify Technical Specification 3.8.3.1 to Increase Completion Time for 120-Volt A.C. Vital Busses ML24218A3002024-08-0101 August 2024 Environmental Review Response to NRC Requests for Additional Information and Response to NRC Requests for Confirmation of Information Set 1 ML24158A3882024-07-31031 July 2024 Issuance of Amendment No. 226 to Change Emergency Plan Staff Augmentation Times and Relocate Emergency Operations Facility ML24162A3292024-07-0505 July 2024 Letter to E Carr - V.C. Summer Unit 1 - Summary of the May 2024 Audit Regarding the Environmental Review of the Subsequent License Renewal Application IR 05000395/20240112024-06-26026 June 2024 – Comprehensive Engineering Team Inspection Report 05000395/2024011 ML24178A2422024-06-25025 June 2024 2023 Annual Report of Emergency Core Cooling System (ECCS) Model, Changes Pursuant to the Requirements of 10 CFR 50.46 ML24178A1192024-06-25025 June 2024 Update to License Amendment Request- Inverter Allowed Outage Time (AOT) Extension ML24177A1382024-06-25025 June 2024 Aging Management Audit Report- VC Summer, Unit 1 - Subsequent License Renewal Application ML24177A2792024-06-20020 June 2024 Preparation and Scheduling of Operator Licensing Examinations ML24171A0152024-06-17017 June 2024 Update to Subsequent License Renewal Application (SLRA) Response to NRC Request for Additional Information Set 2 Safety Review ML24157A3352024-06-0606 June 2024 – Notification of an NRC Cybersecurity Baseline Inspection (NRC Inspection Report 05000395-2024404 and Request for Information ML24155A2042024-05-31031 May 2024 Proposed Alternative Request RR-24-123, Containment Unbonded Post-Tensioning System Inservice Inspection Requirements ML24155A1462024-05-30030 May 2024 Update to Subsequent License Renewal Application (SLRA) -Response to NRC Request for Additional Information Set 1 Response to NRC Request for Confirmation of Information Set 1 and Supplement 3 ML24143A1792024-05-22022 May 2024 Special Report 2024-001-01 for Virgil C. Summer Nuclear Station (Vcsns), Unit 1, Waste Gas System Inoperability ML24141A2822024-05-20020 May 2024 (Vcsns), Unit 1 - License Amendment Request - Emergency Response Organization (ERO) Augmentation Time Change, Emergency Operations Facility Relocation and Other Emergency Plan Changes IR 05000395/20240012024-05-10010 May 2024 Integrated Inspection Report 05000395/2024001 ML24129A2002024-05-0606 May 2024 Update to Subsequent License Renewal Application, Supplement 2 IR 05000395/20240402024-05-0101 May 2024 95001 Supplemental Inspection Report 05000395/2024040 and Follow-Up Assessment Letter ML24120A2072024-04-29029 April 2024 Submittal of Annual Radiological Environmental Operating Report ML24121A1002024-04-29029 April 2024 Response to Request for Additional Information Regarding Alternative Request RR-5-V2 ML24116A2052024-04-23023 April 2024 Annual Radioactive Effluent Release Report ML24109A1792024-04-19019 April 2024 Aging Management Audit Plan Regarding the Subsequent License Renewal Application Review ML24108A0392024-04-18018 April 2024 Letter to E Carr-V.C. Summer Unit 1- Regulatory Audit Regarding the Environmental Review of the Subsequent License Renewal Application ML24108A0672024-04-17017 April 2024 Submittal of Summary for Condition of the Service Water Intake Structure Provided in Accordance with License Condition 2.C.5.d ML24108A1432024-04-17017 April 2024 (Vcsns), Unit 1, Automatic Actuation of B Emergency Diesel Generator ML24100A7312024-04-0909 April 2024 Personnel Exposure and Monitoring Annual Report ML24095A2072024-04-0101 April 2024 Update to Subsequent License Renewal Application (SLRA) Supplement 1 ML24087A2262024-03-26026 March 2024 License Amendment Request - Inverter Allowed Outage Time Extension Response to Request for Additional Information ML24088A2062024-03-26026 March 2024 Annual Operating Report ML24087A2182024-03-26026 March 2024 (Vcsns), Unit 1 - License Amendment Request - Emergency Response Organization (ERO) Augmentation Time Change, Emergency Operations Facility Relocation and Other Emergency Plan Changes - Response to Request. ML24067A0232024-03-0707 March 2024 (Vcsns), Unit 1 - Readiness for 95001 Supplemental Inspection; EA-23-093 IR 05000395/20230062024-02-28028 February 2024 Annual Assessment Letter for Virgil C. Summer Nuclear Station - Report 05000395/2023006 IR 05000395/20244032024-02-27027 February 2024 Security Baseline Inspection Report 05000395/2024403 ML24057A1132024-02-22022 February 2024 Special Report 2024-001 Waste Gas System Inoperability ML24051A0112024-02-20020 February 2024 Fws to NRC, List of Threatened and Endangered Species That May Occur in Proposed Project Location or May Be Affected by Proposed Project for V.C. Summer SLR ML24057A0612024-02-19019 February 2024 and Virgil C. Summer Power Nuclear Stations - Nuclear Property Insurance Coverage ML24032A3062024-02-15015 February 2024 Exemption from Select Requirements of 10 CFR Part 73 - Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting ML24040A1802024-02-12012 February 2024 Notification of NRC Supplemental Inspection (95001) and Request for Information IR 05000395/20244012024-02-0808 February 2024 Security Baseline Inspection Report 05000395/2024401 ML24038A0322024-02-0707 February 2024 (Vcsns), Unit 1, 10 CFR 21 Report - Emergency Diesel Generator Flash Contactor Relay IR 05000395/20230042024-01-31031 January 2024 Integrated Inspection Report 05000395/2023004 ML24022A1582024-01-22022 January 2024 (Vcsns), Unit 1 - Reply to a Notice of Violation: EA-23-093 ML24022A1202024-01-22022 January 2024 Notification of Target Set Inspection and Request for Information (NRC Inspection Report 05000395/2024403) ML24018A0112024-01-18018 January 2024 CFR 21 Report Emergency Diesel Generator Fuel Oil Piping IR 05000395/20230912023-12-21021 December 2023 Final Significance Determination of a White Finding and Notice of Violation and Assessment Followup Letter–Nrc Inspection Report 05000395/2023091 2024-09-26
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Text
V.C. Summer Nuclear Station Bradham Blvd & Hwy 215, Jenkinsville, SC 29065
~ Dominion Mailing Address: ~ Energy P.O. Box 88, Jenkinsville, SC 29065 Domin ionEnergy.com June 22, 2023 Document Control Desk Serial No.23-168 U. S. Nuclear Regulatory Commission VCS LIC/JB Rev 0 Washington , DC 20555-0001 Docket No. 50-395 License No. NPF-12 DOMINION ENERGY SOUTH CAROLINA (DESC)
VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT 1 SPECIAL REPORT 2023-002 INOPERABLE LOOSE-PART MONITORING SYSTEM CHANNEL Dominion Energy South Carolina, Inc. (DESC) hereby submits Special Report 2023-002, pursuant to the requirements of Technical Specification (TS) 3.3.3.10 Action a and TS 6.9.2. Th is special report is required by VCSNS TS because Loose-Part Monitoring System (LPMS) Channel 1 has been inoperable for greater than 30 days.
TS 3.3.3.10 requires the LPMS be operable in Modes 1 and 2 (and does not fall under the provisions of 3.0.4) . LPMS Channel 1, monitoring the reactor vessel upper head, was inoperable when VCSNS entered Mode 2 on May 18, 2023. LPMS Channel 1 was declared inoperable due to indication of sensor failure in background trend data.
Reactor Vessel Upper Head LPMS Channel 10 continues to monitor the reactor vessel upper head for loose parts. Channel 1 has been disabled in LPMS. Loss of dual channel coincidence reduces one aspect of the false alarm filtering functionality. The failed transducer for Channel 1 (IAT00751) is planned for repair or replacement during Refuel 28 in Fall 2024.
Should you have any questions, please call Michael S. Moore at (803) 345-4752.
Sincerely, o L. Justice Site Vice President V.C. Summer Nuclear Station Commitments contained in this letter: None cc: G. J. Lindamood - Santee Cooper G. Miller - NRC Project Manager L. Dudes - NRC Region II NRC Resident Inspector