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Category:Letter
MONTHYEARML24038A0322024-02-0707 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 05000395/20240112024-01-17017 January 2024 Notification of VC Summer Station Comprehensive Engineering Team Inspection - U.S. Nuclear Regulatory Commission Inspection Report 05000395/2024011 ML23361A1042023-12-21021 December 2023 Inservice Testing Program for Pumps and Valves Fifth Interval Update and Associated Relief and Alternative Requests IR 05000395/20230912023-12-21021 December 2023 Final Significance Determination of a White Finding and Notice of Violation and Assessment Followup Letternrc Inspection Report 05000395/2023091 ML23354A1802023-12-20020 December 2023 301 Examination Report with Cover Letter ML23347A0492023-12-12012 December 2023 Technical Specification Bases Changes Updated Through November 2023 ML23334A2462023-11-30030 November 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23334A2372023-11-30030 November 2023 (Vvsns), Unit 1 - Annual Commitment Change Summary Report ML23332A1942023-11-28028 November 2023 (Vcsns), Unit 1, Correction of Typographical Error in License Amendment Request - Inverter Allowed Outage Time (AOT) Extension ML23317A2242023-11-0909 November 2023 (Vcsns), Unit 1 - License Amendment Request - Inverter Allowed Outage Time (AOT) Extension ML23289A1172023-11-0303 November 2023 Tribal Request for Scoping Comments Concerning the Environmental Review of the V.C. Summer SLRA ML23289A1152023-11-0303 November 2023 Ltr to R. Nelson - Request for Scoping Comments Concerning the Environmental Review of the V.C. Summer SLRA ML23289A1162023-11-0303 November 2023 Ltr to W. Emerson - Request for Scoping Comments Concerning the Environmental Review of the V.C. Summer SLRA IR 05000395/20234032023-11-0101 November 2023 Material Control and Accounting Program Inspection Report 05000395/2023403 Cover IR 05000395/20230032023-11-0101 November 2023 Integrated Inspection Report 05000395/2023003 ML23284A1792023-10-16016 October 2023 Subsequent License Renewal Application Online Reference Portal ML23275A0142023-10-11011 October 2023 SLRA - Acceptance and Opportunity for Hearing - Letter ML23284A1662023-10-10010 October 2023 (Vcsns), Unit 1 - Request for Regulatory Conference; (EA-23-093) IR 05000395/20230902023-10-0404 October 2023 NRC Inspection Report 05000395/2023090 and Preliminary Yellow Finding and Apparent Violation IR 05000395/20230112023-09-27027 September 2023 Focused Engineering Inspection Report 05000395/2023011 ML23250A3112023-09-20020 September 2023 Request to Revise Reactor Vessel Material Surveillance Capsule Withdrawal Schedules ML23244A2352023-09-18018 September 2023 Request to Use a Subsequent Edition of the ASME Code, Section XI ML23230A0012023-09-15015 September 2023 Request to Use a Provision of a Previous Edition of the ASME Boiler and Pressure Vessel Code, Section XI, for Non-Destructive Examinations ML23235A0432023-09-0505 September 2023 Receipt and Availability of the Subsequent License Renewal Application IR 05000395/20234012023-08-30030 August 2023 Security Baseline Inspection Report 05000395/2023401 ML23242A1192023-08-29029 August 2023 (Vcsns), Unit 1 - Inservice Inspection (ISI) Owner'S Activity Report (OAR) for Refueling Outage 27 ML23243B0362023-08-25025 August 2023 Request for FEMA Consultation on the Dominion Energy Proposal to Consolidate the Emergency Operations Facility for the Virgil C. Summer Nuclear Station Unit 1 IR 05000395/20230052023-08-23023 August 2023 Updated Inspection Plan for Virgil C. Summer Nuclear Station (Report 05000395 2023005) ML23233A1752023-08-17017 August 2023 Application for Subsequent Renewed Operating License IR 05000395/20230022023-08-14014 August 2023 Integrated Inspection Report - Integrated Inspection Report 05000395/2023002 and Apparent Violation IR 05000395/20230102023-08-12012 August 2023 Biennial Problem Identification and Resolution Inspection Report 05000395/2023010 ML23207A1102023-07-26026 July 2023 NRC Regulatory Issues Summary 2023-01 Preparation and Scheduling of Operator Licensing Examinations IR 05000395/20234412023-07-17017 July 2023 95001 Supplemental Inspection Report 05000395/2023441 and Follow Up Assessment Letter ML23190A0012023-07-0909 July 2023 Special Report 2023-003 Inoperable Radiation Monitoring Instrumentation Channel ML23187A5092023-07-0606 July 2023 Request for Federal Emergency Management Agency Consultation on the Dominion Energy Proposal to Consolidate the Emergency Operations Facility for the Virgil C. Summer Nuclear Station Unit 1 ML23178A1682023-06-26026 June 2023 2022 Annual Report of Emergency Core Cooling System (ECCS) Model Changes Pursuant to the Requirements of 10 CFR 50.46 ML23173A1052023-06-22022 June 2023 Special Report 2023-002 Inoperable Loose-Part Monitoring System Channel ML23163A2352023-06-12012 June 2023 Request to Use a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI, for the SPS Sixth Inservice Inspection (Isi) Intervals and VCSNS Fifth ISI Interval ML23159A2332023-06-0808 June 2023 License Amendment Request - Emergency Response Organization Augmentation Time Change, Emergency Operations Facility Relocation and Other Emergency Plan Changes ML23156A3092023-06-0505 June 2023 Requalification Program Inspection Virgil C. Summer Nuclear Station Unit 1 - 05000395/2023003 2024-02-07
[Table view] Category:License-Operating (New/Renewal/Amendments) DKT 50
MONTHYEARML23137A1782023-05-22022 May 2023 Correction to Issuance of Amendment to Relocate Selected Surveillance Frequencies to a Risk-Informed Licensee Controlled Program ML23072A0892023-05-0101 May 2023 (Amendments 346 & 286), North Anna 1 & 2 (Amnds 294 & 277), Surry 1 & 2 (Amnds 311 & 311), and Summer 1 (Amd 225) - Issuance of Amendments to Revise TSs to Adopt TSTF-554 Revise Reactor Coolant Leakage Requirements ML23012A0152023-02-21021 February 2023 Issuance of Amendment No. 224 to Change Nozzle Blockage Testing Requirement for Reactor Building Spray System ML22341A1972022-12-15015 December 2022 Extension of Steam Generator Primary Inlet Nozzle Dissimilar Metal Weld Inspection Interval ML22244A1722022-09-22022 September 2022 Issuance of Amendment No. 223 to Relocate Main Steam Isolation Valve Isolation Times to the Updated Final Safety Analysis Report ML22242A1632022-08-31031 August 2022 Correction to Issuance of Amendment to Relocate Selected Surveillance Frequencies to a Risk-Informed Licensee Controlled Program ML22160A3652022-08-16016 August 2022 Issuance of Amendment No. 222 to Relocate Selected Surveillance Frequencies to a Risk-Informed Licensee Controlled Program ML22041A0102022-03-0101 March 2022 V.C. Summer 1, Issuance of Amendment Nos. 283 (Millstone), 291 and 274 (North Anna), and 221 (Summer) to Revise TSs to Adopt TSTF-569 Revision of Response Time Testing Definition ML21319A2622021-12-28028 December 2021 Issuance of Amendment No. 220 to Relocate Unit Staff Qualifications from Technical Specification to Quality Assurance Program Description ML21112A1082021-06-30030 June 2021 Issuance of Amendment No. 219 to Modify Technical Specification 6.9.1.11, Core Operating Limits Report ML19276D3772019-12-11011 December 2019 Issuance of Amendment Revise Company Name to Dominion Energy South Carolina, Inc. ML19080A1032019-04-30030 April 2019 Issuance of Amendment No. 215 Technical Specification 3.8.2, D.C. Sources - Operating ML19074A2222019-04-10010 April 2019 Issuance of Amendment No. 214 Removes the Expired One-Time Extension to Surveillance Requirement 4.3.3.6 and Removes the Index from Technical Specifications ML19023A4202019-03-0707 March 2019 Issuance of Amendment Reactor Coolant System Operational Leakage Technical Specification Surveillance Requirement 4.4.6.2.2 ML19056A4062018-11-30030 November 2018 Virgil C. Summer Nuclear Station NPDES Permit No. SC0030856 Renewal Application, Thermal Mixing Zone Evaluation 2018 Water Quality Monitoring Report ML18253A1152018-10-0505 October 2018 Issuance of Amendment No. 212 Technical Specification Change Request for the Revision of the Surveillance Frequency of the Turbine Trip Functional Unit ML18260A0272018-09-25025 September 2018 Issuance of Exigent Amendment One Time Extension to the Surveillance Frequency 4.3.3.6 of the Core Exit Temperature Instrumentation ML18141A6682018-06-28028 June 2018 Issuance of Amendment No. 210, Revise Technical Specification 6.8.4.g for Integrated Leak Rate Test Peak Calculated Containment Internal Pressure Change ML18157A2122018-06-0707 June 2018 Correction to Amendment No. 199 to Correct an Administrative Error ML18108A1632018-04-20020 April 2018 Correction to Amendments Nos. 79 and 202, to Correct Typographical Errors ML18033A8442018-02-27027 February 2018 Correction to Amendment No. 170 to Correct a Typographical Error ML17206A4122017-10-0404 October 2017 Issuance of Amendment TSTF-411, Revision 1, Surveillance Test Interval Extensions for Components of the Reactor Protection System (WCAP-15376-P-A). ML17011A0502017-03-0909 March 2017 Issuance of Amendment to Revise Completion Date of Implementation Milestone 8 of the Cyber Security Plan ML16348A2002017-01-18018 January 2017 Issuance of Amendment to Revise Technical Specification 3.5.4 Limiting Condition for Operation Refueling Water Storage Tank ML16264A4112016-10-26026 October 2016 Issuance of Amendment to Revise Technical Specification 3/4.7.1.2, Emergency Feedwater System ML15231A6052016-05-16016 May 2016 Issuance of Amendment to Change Licensing Basis to Incorporate a Supplemental Analysis to the Steam Generator Tube Rupture Accident ML16104A2952016-05-0606 May 2016 Issuance of Amendment to Adopt TSTF-523, Revision 2 RC-16-0043, License Amendment Request Technical Specification 3/4.7.1.2, Emergency Feedwater System.2016-04-0707 April 2016 License Amendment Request Technical Specification 3/4.7.1.2, Emergency Feedwater System. ML16063A0902016-03-0909 March 2016 Issuance of Exigent Amendment Regarding Technical Specification 3.7.1.2 RC-16-0035, (VCSNS) Unit 1 - Exigent License Amendment Request - LAR (16-00848) Technical Specification Change Request for the Emergency Feedwater System Limiting Condition for Operation 3.7.1.2 Action B2016-03-0101 March 2016 (VCSNS) Unit 1 - Exigent License Amendment Request - LAR (16-00848) Technical Specification Change Request for the Emergency Feedwater System Limiting Condition for Operation 3.7.1.2 Action B ML15208A0292015-10-15015 October 2015 Issuance of Amendment ML15170A0872015-08-18018 August 2015 Issuance of Amendment to Revise the Radiation Emergency Plan ML15063A3552015-04-13013 April 2015 Issuance of Amendment to Revise Emergency Action Levels to a Scheme Based on NEI 99-01, Revision 6 ML14287A2892015-02-11011 February 2015 Issuance of Amendment Regarding Transition to a Risk-Informed, Performance-Based Fire Protection Program in Accordance with 10 CFR 50.48(c) ML14122A3092014-05-29029 May 2014 Issuance of Amendment 198 Regarding the Cyber Security Plan Implementation Schedule Milestone 8 ML14030A3742014-03-11011 March 2014 Issuance of Amendment for Technical Specification Change Related to Control Room Emergency Filtration System ML14010A1822014-02-28028 February 2014 Issuance of Amendment to Revise Technical Specifications to Adopt TSTF-510 ML13354B6432014-02-0606 February 2014 Issuance of Amendment for the Technical Specification Change Related to Snubber Surveillance Requirements ML13326A2042014-02-0505 February 2014 Issuance of Amendment Extending Integrated Leak Rate Test Interval ML12292A0562012-12-21021 December 2012 Issuance of Amendment Regarding Deviation of Scope of the Cyber Security Plan Implementation and Facility Operating Condition 2.E ML12270A3012012-10-12012 October 2012 Issuance of Amendment ML12184A1352012-07-0909 July 2012 Issuance of Amendment ML12146A0172012-05-30030 May 2012 Issuance of Amendment on Beacon Core Monitoring and Operations Support System ML12121A0342012-05-0101 May 2012 Issuance of Amendment Extending Integrated Leak Rate Test ML11346A0062012-03-20020 March 2012 Issuance of Amendment Regarding Quality Assurance Program ML12047A1922012-03-0606 March 2012 Issuance of Amendment No. 187 Regarding Surveillance Frequency of Solids State Protection Westinghouse Type AR Relays 18 Months ML11326A2502012-02-22022 February 2012 Issuance of Amendment Regarding Reactor Coolant System Leakage Detection Systems ML11201A3122011-08-24024 August 2011 Issuance of Amendment 184 Regarding Cyber Security Plan ML1021600202010-10-0404 October 2010 Issuance of Amendment Regarding Alternative Source Term Implementation ML1001103772010-03-22022 March 2010 Issuance of Amendment Regarding: Use of Optimized Zirlo Fuel Rod Cladding 2023-05-22
[Table view] Category:Safety Evaluation
MONTHYEARML23250A3112023-09-20020 September 2023 Request to Revise Reactor Vessel Material Surveillance Capsule Withdrawal Schedules ML23244A2352023-09-18018 September 2023 Request to Use a Subsequent Edition of the ASME Code, Section XI ML23230A0012023-09-15015 September 2023 Request to Use a Provision of a Previous Edition of the ASME Boiler and Pressure Vessel Code, Section XI, for Non-Destructive Examinations ML23072A0892023-05-0101 May 2023 (Amendments 346 & 286), North Anna 1 & 2 (Amnds 294 & 277), Surry 1 & 2 (Amnds 311 & 311), and Summer 1 (Amd 225) - Issuance of Amendments to Revise TSs to Adopt TSTF-554 Revise Reactor Coolant Leakage Requirements ML23062A7292023-03-31031 March 2023 Deferral of Pressurizer and Steam Generator Weld Examinations ML23012A0152023-02-21021 February 2023 Issuance of Amendment No. 224 to Change Nozzle Blockage Testing Requirement for Reactor Building Spray System ML22341A1972022-12-15015 December 2022 Extension of Steam Generator Primary Inlet Nozzle Dissimilar Metal Weld Inspection Interval ML22244A1722022-09-22022 September 2022 Issuance of Amendment No. 223 to Relocate Main Steam Isolation Valve Isolation Times to the Updated Final Safety Analysis Report ML22160A3652022-08-16016 August 2022 Issuance of Amendment No. 222 to Relocate Selected Surveillance Frequencies to a Risk-Informed Licensee Controlled Program ML22041A0102022-03-0101 March 2022 V.C. Summer 1, Issuance of Amendment Nos. 283 (Millstone), 291 and 274 (North Anna), and 221 (Summer) to Revise TSs to Adopt TSTF-569 Revision of Response Time Testing Definition ML21319A2622021-12-28028 December 2021 Issuance of Amendment No. 220 to Relocate Unit Staff Qualifications from Technical Specification to Quality Assurance Program Description ML21188A3322021-08-10010 August 2021 Correction to Amendment No. 219 to Modify Technical Specification 6.9.1.11, Core Operating Limits Report ML21173A1632021-08-0606 August 2021 Authorization and Safety Evaluation for Alternative Request No. RR-4-25 ML21112A1082021-06-30030 June 2021 Issuance of Amendment No. 219 to Modify Technical Specification 6.9.1.11, Core Operating Limits Report ML21075A0452021-03-26026 March 2021 Request to Utilize Code Case N-885 ML20248H3782020-12-0202 December 2020 Alternative Requests RR 4-19 and RR-4-21 Related to the In-Service Testing Program (Epids L-2020-LLR-0077 and L-2020-LLR-0078) ML19361A0702020-01-24024 January 2020 Relief Request Regarding Use of Encoded Phased Array Ultrasonic Examination Techniques in Lieu of Radiography (RR-4-20) ML19276D3772019-12-11011 December 2019 Issuance of Amendment Revise Company Name to Dominion Energy South Carolina, Inc. ML19242E0272019-09-0606 September 2019 Relief Request (RR-4-22) for Use of ASME Code Case N-513-4 ML19140A4732019-06-0404 June 2019 Relief Request (RR-4-23) to Utilize Code Case N-513-4 ML19080A1032019-04-30030 April 2019 Issuance of Amendment No. 215 Technical Specification 3.8.2, D.C. Sources - Operating ML19074A2222019-04-10010 April 2019 Issuance of Amendment No. 214 Removes the Expired One-Time Extension to Surveillance Requirement 4.3.3.6 and Removes the Index from Technical Specifications ML19023A4202019-03-0707 March 2019 Issuance of Amendment Reactor Coolant System Operational Leakage Technical Specification Surveillance Requirement 4.4.6.2.2 ML19035A2992019-02-26026 February 2019 Relief Request (RR-4-18) for Use of NRC Generic Letter 90-05 ML19030B8272019-02-13013 February 2019 Relief Request (RR-4-17) for Use of ASME Code Case N-513-3 ML19003A1882019-01-18018 January 2019 Relief Request (RR-4-16) for Use of ASME Code Case N-513-4 and NRC Generic Letter 90-05 ML18345A0602018-12-17017 December 2018 Relief Request Regarding Use of a Performance Based Testing Frequency for Pressure Isolation Valves (RR-4-14) ML18296A1112018-11-0808 November 2018 Relief Request (RR-4-15) for Use of ASME Code Case N-513-4 ML18253A1152018-10-0505 October 2018 Issuance of Amendment No. 212 Technical Specification Change Request for the Revision of the Surveillance Frequency of the Turbine Trip Functional Unit ML18260A0272018-09-25025 September 2018 Issuance of Exigent Amendment One Time Extension to the Surveillance Frequency 4.3.3.6 of the Core Exit Temperature Instrumentation ML18255A2562018-09-24024 September 2018 Correction to the Safety Evaluation and the Orders Approving Indirect Transfer of Licenses ML18129A0762018-08-30030 August 2018 Transmittal Letter and Safety Evaluation Related to the Orders Approving Indirect Transfer of Licenses for Units 1, 2, 3 and the Independent Spent Fuel Storage Installation ML18186A5882018-07-19019 July 2018 Relief Request (RR-4-13) for Use of a Risk-Informed Process as an Alternative for the Selection of Class 1 and Class 2 Piping Welds. ML18141A6682018-06-28028 June 2018 Issuance of Amendment No. 210, Revise Technical Specification 6.8.4.g for Integrated Leak Rate Test Peak Calculated Containment Internal Pressure Change ML17206A4122017-10-0404 October 2017 Issuance of Amendment TSTF-411, Revision 1, Surveillance Test Interval Extensions for Components of the Reactor Protection System (WCAP-15376-P-A). ML17089A6172017-08-0101 August 2017 Safety Evaluation Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Pool Instrumentation Related to Orders EA-12-049 and EA-12-051 ML17011A0502017-03-0909 March 2017 Issuance of Amendment to Revise Completion Date of Implementation Milestone 8 of the Cyber Security Plan ML17031A0152017-02-0909 February 2017 Relief from the Requirements of the ASME Code Regarding Service Water System Piping ML16348A2002017-01-18018 January 2017 Issuance of Amendment to Revise Technical Specification 3.5.4 Limiting Condition for Operation Refueling Water Storage Tank ML16264A4112016-10-26026 October 2016 Issuance of Amendment to Revise Technical Specification 3/4.7.1.2, Emergency Feedwater System ML16161A0452016-07-0101 July 2016 Relief from the Requirements of the ASME Code ML15231A6052016-05-16016 May 2016 Issuance of Amendment to Change Licensing Basis to Incorporate a Supplemental Analysis to the Steam Generator Tube Rupture Accident ML16104A2952016-05-0606 May 2016 Issuance of Amendment to Adopt TSTF-523, Revision 2 ML16124A8972016-05-0606 May 2016 Relief from the Requirements of the ASME Code ML16063A0902016-03-0909 March 2016 Issuance of Exigent Amendment Regarding Technical Specification 3.7.1.2 ML15208A0292015-10-15015 October 2015 Issuance of Amendment ML15222A5422015-09-0101 September 2015 Alternative Request Regarding Root Mean Square Depth Sizing Requirements ML15170A0872015-08-18018 August 2015 Issuance of Amendment to Revise the Radiation Emergency Plan ML15176A3152015-08-12012 August 2015 Alternative Request Regarding Snubbers ML15063A3552015-04-13013 April 2015 Issuance of Amendment to Revise Emergency Action Levels to a Scheme Based on NEI 99-01, Revision 6 2023-09-20
[Table view] Category:Technical Specifications
MONTHYEARML23317A2242023-11-0909 November 2023 (Vcsns), Unit 1 - License Amendment Request - Inverter Allowed Outage Time (AOT) Extension ML23072A0892023-05-0101 May 2023 (Amendments 346 & 286), North Anna 1 & 2 (Amnds 294 & 277), Surry 1 & 2 (Amnds 311 & 311), and Summer 1 (Amd 225) - Issuance of Amendments to Revise TSs to Adopt TSTF-554 Revise Reactor Coolant Leakage Requirements ML23012A0152023-02-21021 February 2023 Issuance of Amendment No. 224 to Change Nozzle Blockage Testing Requirement for Reactor Building Spray System ML22269A4342022-09-26026 September 2022 VC Summer Correction Letter to Amendment 166 - Enclosure - ML22269A4372022-09-26026 September 2022 Correction to Issuance of Amendment Related to Surveillance Requirement 4.0.5, Associated Basis, and Bases 3/4.4.2, 3/4.4.6, and 3/4.4.10 ML22115A1042022-04-22022 April 2022 License Amendment Request- Technical Specifications Nozzle Blockage Testing Requirement Change for Reactors Building Spray System ML21319A2622021-12-28028 December 2021 Issuance of Amendment No. 220 to Relocate Unit Staff Qualifications from Technical Specification to Quality Assurance Program Description ML21280A3282021-10-0707 October 2021 Application to Revise Technical Specifications to Adopt TSTF-569, Revision of Response Time Testing Definitions ML20156A3032020-06-0404 June 2020 License Amendment Request Update of Analytical Method to the Core Operating Limits Report with the Full Spectrum Loss of Coolant Accident Approach ML18253A1152018-10-0505 October 2018 Issuance of Amendment No. 212 Technical Specification Change Request for the Revision of the Surveillance Frequency of the Turbine Trip Functional Unit ML18092B5102018-03-29029 March 2018 (VCSNS) - Administrative License Amendment Request to Correct the Typographical Error in TS Table 6.2-1 Minimum Shift Crew RC-17-0175, Correction to Amendment No. 170 Request to Revise Technical Specifications to Correct Administrative Error2018-01-31031 January 2018 Correction to Amendment No. 170 Request to Revise Technical Specifications to Correct Administrative Error ML17206A4122017-10-0404 October 2017 Issuance of Amendment TSTF-411, Revision 1, Surveillance Test Interval Extensions for Components of the Reactor Protection System (WCAP-15376-P-A). ML16104A2952016-05-0606 May 2016 Issuance of Amendment to Adopt TSTF-523, Revision 2 ML16063A0902016-03-0909 March 2016 Issuance of Exigent Amendment Regarding Technical Specification 3.7.1.2 ML15208A0292015-10-15015 October 2015 Issuance of Amendment ML15170A0872015-08-18018 August 2015 Issuance of Amendment to Revise the Radiation Emergency Plan ML15063A3552015-04-13013 April 2015 Issuance of Amendment to Revise Emergency Action Levels to a Scheme Based on NEI 99-01, Revision 6 ML14287A2892015-02-11011 February 2015 Issuance of Amendment Regarding Transition to a Risk-Informed, Performance-Based Fire Protection Program in Accordance with 10 CFR 50.48(c) ML14122A3092014-05-29029 May 2014 Issuance of Amendment 198 Regarding the Cyber Security Plan Implementation Schedule Milestone 8 ML14030A3742014-03-11011 March 2014 Issuance of Amendment for Technical Specification Change Related to Control Room Emergency Filtration System ML13354B6432014-02-0606 February 2014 Issuance of Amendment for the Technical Specification Change Related to Snubber Surveillance Requirements ML13326A2042014-02-0505 February 2014 Issuance of Amendment Extending Integrated Leak Rate Test Interval RC-13-0034, License Amendment Request - LAR (11-02281) Technical Specification Change to Add an Exception to Specification 3.0.4 in Technical Specification 3/4.7.6 Control Room Emergency Filtration System (CREFS)2013-04-0303 April 2013 License Amendment Request - LAR (11-02281) Technical Specification Change to Add an Exception to Specification 3.0.4 in Technical Specification 3/4.7.6 Control Room Emergency Filtration System (CREFS) RC-13-0047, License Amendment Request - LAR 12-03567, Application to Revise Tech Specs to Adopt TSTF-510, Revision to Steam Generator Program Inspection Frequencies and Tube Sample Selection, Using Consolidated Line Item Improvement..2013-04-0202 April 2013 License Amendment Request - LAR 12-03567, Application to Revise Tech Specs to Adopt TSTF-510, Revision to Steam Generator Program Inspection Frequencies and Tube Sample Selection, Using Consolidated Line Item Improvement.. ML12146A0172012-05-30030 May 2012 Issuance of Amendment on Beacon Core Monitoring and Operations Support System RC-11-0063, License Amendment Request - LAR 11-01774, Application to Eliminate License Condition 2.G.1 Requiring Reporting of Violations of Section 2.C of the Operating License Using the Consolidated Line Item Improvement Process (CLIIP)2011-08-23023 August 2011 License Amendment Request - LAR 11-01774, Application to Eliminate License Condition 2.G.1 Requiring Reporting of Violations of Section 2.C of the Operating License Using the Consolidated Line Item Improvement Process (CLIIP) RC-11-0104, License Amendment Request - LAR (10-03107) Proposed Change in Administrative Controls Section to Allow the Use of Westinghouse WCAP-12472-P-A, Addendum 1-A2011-08-11011 August 2011 License Amendment Request - LAR (10-03107) Proposed Change in Administrative Controls Section to Allow the Use of Westinghouse WCAP-12472-P-A, Addendum 1-A RC-11-0062, V. C. Summer, License Amendment Request - LAR 04-02961, License Amendment Request for Slave Relay Surveillance Testing2011-04-18018 April 2011 V. C. Summer, License Amendment Request - LAR 04-02961, License Amendment Request for Slave Relay Surveillance Testing RC-11-0006, License Amendment Request - LAR-10-03108, Proposed Change to Relocate Administrative Control Requirements Related to Quality Assurance and Submittal of Quality Assurance Program Description (QAPD)2011-03-18018 March 2011 License Amendment Request - LAR-10-03108, Proposed Change to Relocate Administrative Control Requirements Related to Quality Assurance and Submittal of Quality Assurance Program Description (QAPD) RC-10-0092, License Amendment Request (LAR 10-02033), Changes to Emergency Diesel Generator Surveillance Test Requirements2010-11-11011 November 2010 License Amendment Request (LAR 10-02033), Changes to Emergency Diesel Generator Surveillance Test Requirements ML1001103772010-03-22022 March 2010 Issuance of Amendment Regarding: Use of Optimized Zirlo Fuel Rod Cladding RC-08-0007, License Amendment Request - LAR 03-01931-20, Application to Revise Technical Specifications Regarding Control Room Envelope Habitability in Accordance with TSTF-448, Revision 3, Using the Consolidated Line Item Improvement Process2008-01-17017 January 2008 License Amendment Request - LAR 03-01931-20, Application to Revise Technical Specifications Regarding Control Room Envelope Habitability in Accordance with TSTF-448, Revision 3, Using the Consolidated Line Item Improvement Process ML0713705092007-05-15015 May 2007 Technical Specifications, Issuance of Amendment Regarding Steam Generator Tube Integrity RC-06-0199, License Amendment Request - LAR 05-3262, Changes to Emergency Diesel Generator Specification2006-11-21021 November 2006 License Amendment Request - LAR 05-3262, Changes to Emergency Diesel Generator Specification ML0630700682006-11-0202 November 2006 Technical Specifications Pages Re Alternate AC Power Supply ML0630000262006-10-24024 October 2006 Technical Specifications, Implementing Approved Changes in Probabilistic Risk Analysis of the RPS and ESFAS Test Times and Completion Times. ML0627002792006-09-0707 September 2006 V.C. Summer, Tech Spec Pages for Amendment 176 Regarding Best Estimate Loss-of-Coolant Accident Analyses Methodology RC-06-0084, License Amendment Request - LAR 05-3594, Steam Generator Tube Integrity2006-05-24024 May 2006 License Amendment Request - LAR 05-3594, Steam Generator Tube Integrity ML0614204982006-05-0404 May 2006 Technical Specifications, Administrative Controls ML0535300472005-12-13013 December 2005 Enclosure, Amd MC7375, Reactor Coolant System Pressure-Temperature Limits ML0522402792005-08-10010 August 2005 Operating License, License Amendment Request- LAR 04-0440, Emergency Feedwater System Pump Testing Criteria RC-05-0090, License Amendment Request Re Reactor Coolant System - Heatup/Cooldown Curves2005-06-22022 June 2005 License Amendment Request Re Reactor Coolant System - Heatup/Cooldown Curves ML0513902262005-05-0909 May 2005 Enclosure, Amd MC3308, Extending the Inspection Interval for Reactor Coolant Pump Flywheels RC-05-0041, License Amendment Request (LAR 03-1931-24) Adoption of TS Task Force (TSTF) Traveler-287, Revision 5, Ventilation System Envelope Allowed Outage Time2005-03-0909 March 2005 License Amendment Request (LAR 03-1931-24) Adoption of TS Task Force (TSTF) Traveler-287, Revision 5, Ventilation System Envelope Allowed Outage Time ML0410404932004-04-0505 April 2004 Technical Specifications, Revision to Allowed Outage Time for Engineered Safety Features Actuation System Instrumentation ML0334503692003-12-15015 December 2003 Tech Spec Pages for Amendment 165 One-Time Extension of Steam Generator Inspection Interval ML0330400312003-10-29029 October 2003 Technical Specification Pages for Virgil C. Summer Nuclear Station, Unit 1, Amendment No. 165 ML0327513912003-09-26026 September 2003 Technical Specification for Virgil C. Summer Nuclear Station, Unit 1 - Issuance of Amendment 164, Revising the Action Statement and Surveillance Requirement for the Emergency Diesel Generators RC-03-0176, Revision to License Amendment Request - LAR 02-2767 Steam Generators - One Time Exclusion on Inspection Frequency2003-08-20020 August 2003 Revision to License Amendment Request - LAR 02-2767 Steam Generators - One Time Exclusion on Inspection Frequency 2023-05-01
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 5, 2018 Mr. George A. Lippard, Ill Vice President, Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P.O. Box 88, Mail Code 800 Jenkinsville, SC 29065
SUBJECT:
VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 - ISSUANCE OF AMENDMENT RE: TECHNICAL SPECIFICATION CHANGE REQUEST FOR THE REVISION OF THE SURVEILLANCE FREQUENCY OF THE TURBINE TRIP FUNCTIONAL UNIT (EPID L-2018-LLA-0085)
Dear Mr. Lippard:
The U.S. Nuclear Regulatory Commission (the Commission) has issued the enclosed Amendment No. 212 to Renewed Facility Operating License No. NPF-12 for the Virgil C.
Summer Nuclear Station, Unit No. 1, in response to your application dated April 3, 2018, as supplemented by letter dated August 22, 2018.
This amendment changes Technical Specification Table 4.3-1, "Reactor Trip System Instrumentation Surveillance Requirements" Functional Units 17.A, Turbine Trip - Low Fluid Oil Pressure, and 17.B, Turbine Trip - Turbine Stop Valve Closure. Specifically, the Trip Actuating Device Operational Test column of Table 4.3-1 is revised to delete performing the 17.A and 17.B surveillance requirements prior to reactor startup (S/U) and replacing these surveillance requirements with a reference to Table Notation (8), that states 17.A and 17.B surveillance requirements will be conducted "Prior to entering MODE 1 whenever the unit has been in MODE 3."
G. Lippard A copy of the related Safety Evaluation is also enclosed. Notice of Issuance will be included in the Commission's biweekly Federal Register notice.
Sincerely, 1 ,- ,
Shawn A. Williams, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-395
Enclosures:
- 1. Amendment No. 212 to NPF-12
- 2. Safety Evaluation cc: Listserv
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, 0.C. 20555-0001 SOUTH CAROLINA ELECTRIC & GAS COMPANY SOUTH CAROLINA PUBLIC SERVICE AUTHORITY DOCKET NO. 50-395 VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 AMENDMENT TO RENEWED FACILITY OPERATING LICENSE Amendment No. 212 Renewed License No. NPF-12
- 1. The U.S. Nuclear Regulatory Commission (the Commission) has found that:
A. The application for amendment to the Virgil C. Summer Nuclear Station, Unit No. 1 (the facility), Renewed Facility Operating License No. NPF-12 filed by the South Carolina Electric & Gas Company (the licensee), dated April 3, 2018, as supplemented by letter dated August 22, 2018, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulations set forth in 10 CFR Chapter I; B. The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C. There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations as set forth in 10 CFR Chapter I; D. The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E. The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.
Enclosure 1
- 2. Accordingly, the license is hereby amended by page changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Renewed Facility Operating License No. NPF-12 is hereby amended to read as follows:
(2) Technical Specifications and Environmental Protection Plan The Technical Specifications contained in Appendix A, as revised through Amendment No. 212, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. South Carolina Electric & Gas Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.
- 3. This amendment is effective as of its date of issuance and shall be implemented within 7 days of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION
~"Z-~
Michael T. Markley, Chief Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
Attachment:
Changes to Renewed Facility Operating License and Technical Specifications Date of Issuance: October 5 , 2 O 18
VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 ATTACHMENT TO LICENSE AMENDMENT NO. 212 RENEWED FACILITY OPERATING LICENSE NO. NPF-12 DOCKET NO. 50-395 Replace the following pages of the Renewed Facility Operating License and Appendix A, Technical Specifications (TSs), with the attached revised pages. The revised pages are identified by amendment number and contain marginal lines indicating the areas of change.
Remove License License Page 3 Page 3 TS 3/4 3-12 3/4 3-12 3/4 3-14 3/4 3-14
(3) SCE&G, pursuant to the Act and 10 CFR Part 70, to receive, possess and use at any time special nuclear material as reactor fuel, in accordance with the limitations for storage and amounts required for reactor operation, as described in the Final Safety Analysis Report, as amended through Amendment No. 33; (4) SCE&G, pursuant to the Act and 10 CFR Parts 30, 40 and 70, to receive, possess and use at any time any byproduct, source and special nuclear material as sealed neutron sources for reactor startup, sealed neutron sources for reactor instrumentation and radiation monitoring equipment calibration, and as fission detectors in amounts as required; (5) SCE&G, pursuant to the Act and 10 CFR Parts 30, 40 and 70, to receive, possess and use in amounts as required any byproduct, source or special nuclear material without restriction to chemical or physical form, for sample analysis or instrument calibration or associated with radioactive apparatus or components; and (6) SCE&G, pursuant to the Act and 10 CFR Parts 30, 40 and 70, to possess, but not separate, such byproduct and special nuclear materials as may be produced by the operation of the facility.
C. This renewed license shall be deemed to contain, and is subject to, the conditions specified in the Commission's regulations set forth in 10 CFR Chapter I and is subject to all applicable provisions of the Act and to the rules, regulations, and orders of the Commission now or hereafter in effect; and is subject to the additional conditions specified or incorporated below:
(1) Maximum Power Level SCE&G is authorized to operate the facility at reactor core power levels not in excess of 2900 megawatts thermal in accordance with the conditions specified herein and in Attachment 1 to this renewed license.
The preoperational tests, startup tests and other items identified in Attachment 1 to this renewed license shall be completed as specified.
Attachment 1 is hereby incorporated into this license.
(2) Technical Specifications and Environmental Protection Plan The Technical Specifications contained in Appendix A, as revised through Amendment No. 212, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. South Carolina Electric & Gas Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.
Renewed Facility Operating License No. NPF-12 Amendment No. 212
(/) TABLE 4.3-1 (Continued}
C
~
~ REACTOR TRIP SYSTEM INSTRUMENTATION SURVEILLANCE REQUIREMENTS m
- a I TRIP C ANALOG ACTUATING MODES FOR z CHANNEL DEVICE ACTUATION
-I WHICH
_,. CHANNEL CHANNEL OPERATIONAL OPERATIONAL LOGIC SURVEILLANCE FUNCTIONAL UNIT CHECK CALIBRATION TEST TEST TEST IS REQUIRED
- 13. Steam Generator Water Level-- s R SA N.A. N.A. 1,2 Low-Low
- 14. Steam Generator Water Level - s R SA N.A. N.A. 1, 2 Low Coincident with Steam/
Feedwater Flow Mismatch
- 15. Undervoltage - Reactor Coolant N.A. R N.A. SA N.A. 1 c,.)
.i:,..
c,.)
I 16.
Pumps Underfrequency - Reactor N.A. R N.A. SA N.A. 1 Coolant Pumps
"' 17. Turbine Trip A. Low Fluid Oil Pressure N.A. R N.A. (1, 8, 10) N.A. 1 B. Turbine Stop Valve N.A. R N.A. (1, 8, 10) N.A. 1 Closure
)> 19. Reactor Trip System Interlocks 3
CD A. Intermediate Range N.A. R(4) R N.A. N.A. 2##-
- a. Neutron Flux, P-6 3
-z CD
- , B. Low Power Reactor N.A. R(4) R N.A. N.A. 1 Trips Block, P-7 0
C Power Range Neutron N.A. R(4) R N.A. N.A. 1 Flux, P-8
-~
j
TABLE 4.3-1 (Continued)
TABLE NOTATION
- ft# Below P-6 (Intermediate Range Neutron Flux Interlock) setpoint.
- - - Below P-10 (Low Setpoint Power Range Neutron Flux Interlock) setpoint.
(1) If not performed in previous 31 days.
(2) Comparison of calorimetric to excore power indication above 15% of RATED THERMAL POWER. Adjust excore channel gains consistent with calorimetric power if absolute difference is greater than 2 percent. The provisions of Specification 4.0.4 are not applicable for entry into MODE 2 or 1.
(3) Single point comparison of incore to excore AXIAL FLUX DIFFERENCE above 15% of RATED THERMAL POWER. Recalibrate if the absolute difference is greater than or equal to 3 percent. The provisions of Specification 4.0.4 are not applicable for entry into MODE 2 or 1.
(4) Neutron detectors may be excluded from CHANNEL CALIBRATION.
(5) Detector plateau curves shall be obtained evaluated and compared to manufacturer's data. For the Power Range Neutron Flux Channels the provisions of Specification 4.0.4 are not applicable for entry into MODE 2 or 1.
(6) lncore - Excore Calibration, above 75% of RATED THERMAL POWER. The provisions of Specification 4.0.4 are not applicable for entry into MODE 2 or 1.
(7) Each train shall be tested at least every 124 days on a STAGGERED TEST BASIS.
(8) Prior to entering MODE 1 whenever the unit has been in MODE 3.
(9) Surveillance in MODES 3*, 4* and 5* shall also include verification that permissives P-6 and P-10 are in their required state for existing plant conditions by observation of the permissive annunciator window.
(10) - Setpoint verification is not required.
( 11) - The TRIP ACTUATING DEVICE OPERATIONAL TEST shall independently verify the OPERABILITY of the undervoltage and shunt trip circuits for the Manual Reactor Trip Function. The test shall also verify the OPERABILITY of the Bypass Breaker trip circuit( s ).
(12) - The TRIP ACTUATING DEVICE OPERATIONAL TEST shall independently verify the OPERABILITY of the undervoltage and shunt trip attachments of the Reactor Trip Breakers.
(13) - Local manual shunt trip prior to placing breaker in service.
(14) - Automatic undervoltage trip.
(15) - Each train shall be tested at least every 184 days on a Staggered Test Basis.
(16) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after reducing power below P-10 and 184 days thereafter.
(17) 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after reducing power below P-6 and 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after entering MODE 3 from MODE 2 and 184 days thereafter.
(18) If not performed in previous 184 days.
SUMMER - UNIT 1 3/4 3-14 Amendment No. 73, 78, 101,~ 212
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 212 TO RENEWED FACILITY OPERATING LICENSE NO. NPF-12 SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 DOCKET NO. 50-395
1.0 INTRODUCTION
By letter dated April 3, 2018 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML18094A189), as supplemented by letter dated August 22, 2018 (ADAMS Accession No. ML18234A511 ), South Carolina Electric & Gas Company (SCE&G, the licensee) submitted a license amendment request to modify the Virgil C. Summer Nuclear Station (VCSNS), Unit No. 1, Technical Specifications (TSs).
This amendment changes Technical Specification Table 4.3-1, "Reactor Trip System Instrumentation Surveillance Requirements" Functional Units 17.A, Turbine Trip - Low Fluid Oil Pressure, and 17.B, Turbine Trip - Turbine Stop Valve Closure. Specifically, the Trip Actuating Device Operational Test (TADOT) column of Table 4.3-1 is revised to delete performing the 17.A and 17.B surveillance requirements prior to reactor startup (S/U) and replacing these surveillance requirements with a reference to Table Notation (8), that states 17.A and 17.B surveillance requirements will be conducted "Prior to entering MODE 1 [Power Operation]
whenever the unit has been in MODE 3 [Hot Standby]."
The supplemental letter dated August 22, 2018, provided additional information that clarified the application, did not expand the scope of the application as originally noticed, and did not change the U.S. Nuclear Regulatory Commission (NRC, or the Commission) staff's original proposed no significant hazards consideration determination as published in the Federal Register on May 22, 2018 (83 FR 23736).
2.0 REGULATORY EVALUATION
2.1 System Description The licensee describes the reactor trip on turbine trip as an anticipatory trip input signal to the reactor protection system. This trip function anticipates the loss of heat removal capabilities of the secondary system following a turbine trip and acts to minimize the pressure/temperature transient on the Reactor Coolant System (RCS). The reactor trip on a turbine trip is actuated by Enclosure 2
a 2 out of 3 logic from the emergency trip fluid pressure signals or by all closed signals from the turbine steam stop valves. A turbine trip initiates a reactor trip when above the P-9 interlock, which is defined as a power level less than or equal to 50% of rated thermal reactor power. The turbine provides anticipatory trips to the reactor protection system from contacts that change position when the turbine stop valves close or when the turbine emergency trip fluid pressure goes below its setpoint. The anticipatory trips meet IEEE 279-1971, "Criteria for Protection Systems for Nuclear Power Generating Stations" including separation redundancy, single failure, and sustainability.
The current reactor trip system instrumentation surveillance requirements 17.A and 17.B, require the surveillance requirement to be performed prior to MODE 2 (reactor startup). When performed prior to reactor startup, the only heat input to the system is that from decay heat and the reactor coolant pumps. The licensee states that when the main turbine is reset prior to performing this surveillance requirement, the main stop valves open causing a sudden demand on the main steam supply. Given the limited amount of heat available prior to reactor startup, this sudden demand will drop the main steam pressure with a corresponding drop in the RCS pressure. The licensee stated that the drop in RCS pressure and main steam pressure may result in a safety injection signal that will occur if the pressurizer pressure drops to 1,850 psig or the steam line pressure drops to 675 psig.
2.2 Description of Changes The proposed change revises Functional Units 17.A and 17.B of TS Table 4.3-1, "Reactor Trip System Instrumentation Surveillance Requirements." The surveillance frequency of prior to each reactor startup (S/U)" in the TADOT column of this table will be deleted and replaced with a reference to revised Table Notation (8) which would state: "Prior to entering MODE 1 whenever the unit has been in MODE 3." The proposed surveillance frequency does not alter current Table Notations 1 and 10 that state "If not performed in previous 31 days" and "Setpoint verification is not required," respectively.
2.3 Regulatory Review In Title 10 of the Code of Federal Regulations (10 CFR) Section 50.36, "Technical Specifications," the NRC established its regulatory requirements related to the content of TSs.
Pursuant to 10 CFR 50.36(c), TSs are required to include items in the following five specific categories related to plant operation: (1) safety limits, limiting safety system settings, and limiting control settings; (2) LCOs; (3) surveillance requirements (SRs); (4) design features; and (5) administrative controls.
Appendix A to 10 CFR Part 50, "General Design Criteria," provides the design requirements for protection systems associated with reactor operation in General Design Criteria (GDC) 20 through 29. Section II.K.3.12 of Enclosure 3 of NUREG-0737, "Clarification of TMI Action Plan Requirements," (ADAMS Accession No. ML051400209) requires Westinghouse plants to include an anticipatory reactor trip upon turbine trip function in the reactor trip system.
The NRC published a set of Standard Technical Specifications (STS) in NUREG-1431, Revision 4 "Standard Technical Specifications, Westinghouse Plants" (ADAMS Accession No. ML 121 OOA222). The STS provide model format and content for TSs that satisfy the regulations contained in 10 CFR 50.36. The STS are not requirements, but licensees adopting portions of the STS to existing TSs should adopt all related requirements, as applicable, to achieve a high degree of standardization and consistency. Technical Specification Task Force (TSTF)
Standard Technical Specification Change Traveler TSTF-311, "Revision of Surveillance Frequency for TADOT on Turbine Trip Functional Unit," (ADAMS Accession No. ML040620175) proposed changes to revise the Frequency and associated Bases for performing a TADOT on Functional Unit 16, Turbine Trip. This corresponds to Functional Unit 17, Turbine Trip, in the VCSNS TSs.
The TS changes contained in the licensee's amendment request were evaluated by comparing them to the applicable GDC and requirements listed in NUREG-0737. The amendment was also compared to the STS in NUREG-1431 and TSTF-311 for consistency.
3.0 TECHNICAL EVALUATION
The NRC staff has reviewed the proposed change to Functional Units 17.A and 17.B of TS Table 4.3-1, "Reactor Trip System Instrumentation Surveillance Requirements." The proposed change from "Prior to each reactor startup" to "Prior to entering MODE 1 whenever the unit has been in MODE 3," would allow the surveillance requirement to be performed in MODE 2, whereas it currently is required to be performed prior to entering MODE 2.
The licensee states that "This change is desired because of the significant risk of causing a Safety Injection (SI) during the performance of this surveillance test prior to reactor startup. The steam demand required for this surveillance causes a cooldown of the Reactor Coolant System (RCS), and with very low decay heat, produces a large cooldown and depressurization. This configuration increases the potential of causing a SI due to the rapid cooldown and depressurization of the Main Steam and RCS."
NRC Staff Evaluation
The turbine trips are not credited as the primary actuation of a reactor trip for any VCSNS postulated event. They are provided to enhance the overall reliability of the reactor protection system. The NRC staff finds that the proposed change is more conservative than the latest version of the standard TSs (NUREG-1431, Revision 4) and NRC approved TSTF-311, in that these documents allow the surveillance in MODE 1 prior to exceeding the P-9 interlock. The NRC staff finds that the proposed change will not adversely affect the ability of the reactor trip system to generate the required trip signal for turbine trip events.
The Turbine Trip functions are not required to provide a reactor trip until the reactor is in MODE 1 and power is above the P-9 logic setpoint (which is defined as s 50% rated thermal power). The NRC staff finds that the proposed revision to change the turbine trip function surveillance frequency to before the reactor is in MODE 1 achieves the appropriate requirement to have an operable trip function when the system is capable of initiating the required reactor trip signal.
Given the risk of generating an SI during performance of the surveillance with very low decay heat, the NRC staff asked the licensee to confirm that performing this surveillance in MODE 2 does not increase the risk of generating an SI signal. In addition, the NRC staff asked the licensee to confirm that performing this surveillance at low power (i.e., in MODE 2 where power could be up to 5% rated thermal power) does not have any unintended consequences. In its letter dated August 22, 2018, the licensee responded that performance of this surveillance while the plant is in MODE 2 would not increase the risk of generating an SI signal or result in any unintended consequences. In its letter dated August 22, 2018, the licensee stated that allowing the test to be performed with reactor power sufficient (up to 5%) will prevent an SI due to the
rapid cooldown and depressurization of the main steam line and RCS. While at low power (i.e.,
in MODE 2), the steam header pressure would be maintained during the surveillance by additional steam flow from the steam generators. Because the reactor would be critical above the point of adding heat, the additional steam flow would cause a small power increase instead of RCS cooldown. The NRC staff finds that there is no additional risk in performing the surveillance prior to entering MODE 1 and is, therefore, acceptable ..
The proposed surveillance frequency is consistent with the function applicability requirements and the VCSNS design and analysis for the turbine trip safety function. There is no proposed change to any design, therefore, the GDCs continue to be met with the proposed TS changes.
The requirements of NUREG-0737 also continue to be met. While the format of the VCSNS TSs does not match that of the STS, NRC staff finds that the proposed changes bring the content of VCSNS TS into closer alignment with the content of the STS.
NRC Staff Conclusion The regulations at 10 CFR 50.36 require that TSs include items in specified categories, including Limiting Conditions for Operation and Surveillance Requirements (SRs). The proposed changes modify the SRs applicable to the turbine trip functional unit. The TSs continue to specify the appropriate SRs for tests and inspections to ensure the necessary quality of affected structures, systems and components is maintained. The NRC staff finds that the proposed SRs meet the requirements of 10 CFR 50.36(c)(2) and 50.36(c)(3), respectively.
4.0 STATE CONSULTATION
In accordance with the Commission's regulations, the State of South Carolina official was notified of the proposed issuance of the amendment on September 18, 2018. On September 24, 2018, the State official confirmed that the State of South Carolina had no comments.
5.0 ENVIRONMENTAL CONSIDERATION
The amendment changes a requirement with respect to the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 and changes surveillance requirements. The NRC staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure. The Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding as published in the Federal Register on May 22, 2018 (83 FR 23736).
Accordingly, the amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendment.
6.0 CONCLUSION
The Commission has concluded, based on the considerations discussed above, that: (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) there is reasonable assurance that such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.
Principal Contributor: Robert Beaton, NRR Date: October 5, 2018
ML18253A115 *by memo OFFICE DORL/LPL2-1/PM DORL/LPL2-1 /LA DSS/SRXB/BC DSS/STSB/BC NAME SWilliams KGoldstein JWhitman* VCusumano*
DATE 9/18/18 09/14/18 9/6/18 9/6/18 OFFICE DE/El CB/BC OGC/NLO DORL/LPL2-1 /BC DORL/LPL2-1/PM NAME MWaters AGhosh MMarkley SWilliams DATE 9/25/18 9/27/18 10/3/18 10/5/18