ML22278A259

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Rev. 21 to Updated Final Safety Analysis Report, Chapter 9, Appendix 9A, Fire Protection Evaluation Report
ML22278A259
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 09/19/2022
From:
Constellation Energy Generation
To:
Office of Nuclear Reactor Regulation
Shared Package
ML22278A223 List: ... further results
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Download: ML22278A259 (9)
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LGS UFSAR APPENDIX 9A - FIRE PROTECTION EVALUATION REPORT TABLE OF CONTENTS 9A.1 INTRODUCTION 9A.2 FIRE PROTECTION SYSTEM DESCRIPTION 9A.2.1 Fire Protection Water Supply Systems 9A.2.1.1 Water Source 9A.2.1.2 Pumps 9A.2.1.3 Yard Piping 9A.2.2 Wet Pipe Sprinkler Systems 9A.2.3 Preaction Sprinkler Systems 9A.2.4 Deluge Systems 9A.2.5 Water Deluge Application for Charcoal Filters 9A.2.6 Wet Standpipes and Hose Stations 9A.2.7 Foam Extinguishing System 9A.2.8 Deleted 9A.2.9 Halon Extinguishing Systems 9A.2.10 Water Curtain Systems 9A.2.11 Portable Fire Extinguishers 9A.2.12 Fire and Smoke Detection System 9A.3 COMPARISON BETWEEN LGS FIRE PROTECTION PROGRAM AND NRC GUIDELINE DOCUMENTS 9A.3.1 NRC Branch Technical Position CMEB 9.5-1 9A.3.1.1 Detailed Comparison to Branch Technical Position CMEB 9.5-1 9A.3.1.2 Explanatory Notes for Comparison to Branch Technical Position CMEB 9.5-1 9A.3.2 10CFR50, Appendix R 9A.3.2.1 Detailed Comparison to 10CFR50, Appendix R 9A.3.2.2 Explanatory Notes for Appendix R Comparison APPENDIX 9A 9A.i REV. 20, SEPTEMBER 2020

LGS UFSAR 9A.4 EVALUATION OF POTENTIAL FIRE HAZARDS 9A.4.1 Scope of Evaluation 9A.4.2 Procedure 9A.5 ANALYSIS OF CAPABILITY TO ACHIEVE SAFE SHUTDOWN 9A.5.1 Methodology 9A.5.2 Description of Reactor Shutdown Methods 9A.5.2.1 Reactor Shutdown With Balance of Plant Cooling Systems Available 9A.5.2.2 Reactor Shutdown Without Balance of Plant Cooling Systems Available 9A.5.3 Safe Shutdown Analysis - Control Structure 9A.5.3.1 Fire Area 1: Recombiner Compartments, Condensate Backwash Compartments, and Control Structure Water Chiller Areas (el 180'-0" and 200'-0")

9A.5.3.2 Fire Area 2: 13 kV Switchgear Area (el 217'-0")

9A.5.3.3 Fire Area 3: Unit 1 Class 1E Battery Room (el 217'-0")

9A.5.3.4 Fire Area 4: Unit 1 Class 1E Battery Room (el 217'-0")

9A.5.3.5 Fire Area 5: Unit 2 Class 1E Battery Room (el 217'-0")

9A.5.3.6 Fire Area 6: Unit 2 Class 1E Battery Room (el 217'-0")

9A.5.3.7 Fire Area 7: Corridor (el 239'-0")

9A.5.3.8 Fire Area 8: Unit 1 Class 1E Battery Room (el 239'-0")

9A.5.3.9 Fire Area 9: Unit 1 Class 1E Battery Room (el 239'-0")

9A.5.3.10 Fire Area 10: Unit 2 Class 1E Battery Room (el 239'-0")

9A.5.3.11 Fire Area 11: Unit 2 Class 1E Battery Room (el 239'-0")

9A.5.3.12 Fire Area 12: Unit 1 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.13 Fire Area 13: Unit 1 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.14 Fire Area 14: Unit 1 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.15 Fire Area 15: Unit 1 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.16 Fire Area 16: Unit 2 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.17 Fire Area 17: Unit 2 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.18 Fire Area 18: Unit 2 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.19 Fire Area 19: Unit 2 4 kV Switchgear Compartment (el 239'-0")

9A.5.3.20 Fire Area 20: Unit 1 Static Inverter Compartment (el 254'-0")

9A.5.3.21 Fire Area 21: Unit 2 Static Inverter Compartment (el 254'-0")

9A.5.3.22 Fire Area 22: Unit 1 Cable Spreading Room (el 254'-0")

9A.5.3.23 Fire Area 23: Unit 2 Cable Spreading Room (el 254'-0")

9A.5.3.24 Fire Area 24: Control Room and Peripheral Rooms (el 269'-0")

9A.5.3.25 Fire Area 25: Auxiliary Equipment Room (el 289'-0")

9A.5.3.26 Fire Area 26: Remote Shutdown Room (el 289'-0")

9A.5.3.27 Fire Area 27: Control Structure Fan Room (el 304'-0")

9A.5.3.28 Fire Area 28: SGTS Filter Compartments and Access Area (el 332'-0")

9A.5.4 Safe Shutdown Analysis - Unit 1 Reactor Enclosure 9A.5.4.1 Fire Area 29: Suppression Chamber (el 181'-11")

9A.5.4.2 Fire Area 30: Drywell (el 237'-11")

APPENDIX 9A 9A.ii REV. 20, SEPTEMBER 2020

LGS UFSAR 9A.5.4.3 Fire Area 31: Residual Heat Removal Compartment (el 177'-0")

9A.5.4.4 Fire Area 32: Residual Heat Removal Compartment (el 177'-0")

9A.5.4.5 Fire Area 33: Reactor Core Isolation Cooling Compartment (el 177'-0")

9A.5.4.6 Fire Area 34: High Pressure Coolant Injection Compartment (el 177'-0")

9A.5.4.7 Fire Area 35: Core Spray Compartment (el 177'-0")

9A.5.4.8 Fire Area 36: Core Spray Compartment (el 177'-0")

9A.5.4.9 Fire Area 37: Core Spray Compartment (el 177'-0")

9A.5.4.10 Fire Area 38: Core Spray Compartment (el 177'-0")

9A.5.4.11 Fire Area 39: Sump Room and Passageway (el 177'-0")

9A.5.4.12 Fire Area 40: Corridor (el 177'-0")

9A.5.4.13 Fire Area 41: Reactor Enclosure Cooling Water Equipment Area (el 201'-0")

9A.5.4.14 Fire Area 42: Safeguard System Access Area (el 201'-0")

9A.5.4.15 Fire Area 43: Safeguard System Isolation Valve Area (el 217'-0")

9A.5.4.16 Fire Area 44: Safeguard System Access Area (el 217'-0")

9A.5.4.17 Fire Area 45: CRD Hydraulic Equipment Area and Neutron Monitoring System Area (el 253'-0")

9A.5.4.18 Fire Area 46: Main Steam Tunnel (el 253'-0")

9A.5.4.19 Fire Area 47: RWCU Compartments, FPCC Compartment, and General Equipment Area (el 283'-0" and el 295'-3")

9A.5.4.20 Fire Area 48: RWCU Holding Pump Compartments, RERS Fan Area, and Corridors (el 313'-0")

9A.5.4.21 Fire Area 49: Reactor Enclosure Lower Fan Room (el 313'-0")

9A.5.4.22 Fire Area 50: Reactor Enclosure Upper Fan Room and Equipment Compartment Exhaust Filter Rooms (el 331'-0")

9A.5.4.23 Fire Area 51: RERS Filter Compartments (el 331'-0")

9A.5.4.24 Fire Area 75: Service Water Pipe Tunnel (el 198'-0")

9A.5.4.25 Fire Area 76: Refueling Hoist-way (el 217'-0")

9A.5.4.26 Fire Area 77: South Ventilation Exhaust Stack 9A.5.4.27 Fire Area 78: Refueling Area (el 352'-0")

9A.5.4.28 Fire Area 126: North Stack Instrument Room and Vestibule (el 411'-9")

9A.5.4.29 Fire Area 127: South Stack Instrument Room (el 411'-9")

9A.5.5 Safe Shutdown Analysis - Unit 2 Reactor Enclosure 9A.5.5.1 Fire Area 52: Suppression Chamber (el 181'-11")

9A.5.5.2 Fire Area 53: Drywell (el 237'-11")

9A.5.5.3 Fire Area 54: Residual Heat Removal Compartment (el 177'-0")

9A.5.5.4 Fire Area 55: Residual Heat Removal Compartment (el 177'-0")

9A.5.5.5 Fire Area 56: Reactor Core Isolation Cooling Compartment (el 177'-0")

9A.5.5.6 Fire Area 57: High Pressure Coolant Injection Compartment (el 177'-0")

9A.5.5.7 Fire Area 58: Core Spray Compartment (el 177'-0")

9A.5.5.8 Fire Area 59: Core Spray Compartment (el 177'-0")

9A.5.5.9 Fire Area 60: Core Spray Compartment (el 177'-0")

9A.5.5.10 Fire Area 61: Core Spray Compartment (el 177'-0")

9A.5.5.11 Fire Area 62: Sump Room and Passageway (el 177'-0")

9A.5.5.12 Fire Area 63: Corridor (el 177'-0")

9A.5.5.13 Fire Area 64: Reactor Enclosure Cooling Water Equipment Area (el 201'-0")

9A.5.5.14 Fire Area 65: Safeguard System Access Area (el 201'-0")

9A.5.5.15 Fire Area 66: Safeguard System Isolation Valve Area (el 217'-0")

9A.5.5.16 Fire Area 67: Safeguard System Access Area (el 217'-0")

APPENDIX 9A 9A.iii REV. 20, SEPTEMBER 2020

LGS UFSAR 9A.5.5.17 Fire Area 68: CRD Hydraulic Equipment Area and Neutron Monitoring System Area (el 253'-0")

9A.5.5.18 Fire Area 69: Main Steam Tunnel (el 253'-0")

9A.5.5.19 Fire Area 70: RWCU Compartments, FPCC Compartment, and General Equipment Area (el 283'-0" and el 295'-3")

9A.5.5.20 Fire Area 71: RWCU Holding Pump Compartments, RERS Fan Area, and Corridors (el 313'-0")

9A.5.5.21 Fire Area 72: Reactor Enclosure Lower Fan Room (el 313'-0")

9A.5.5.22 Fire Area 73: Reactor Enclosure Upper Fan Room and Equipment Compartment Exhaust Filter Rooms (el 331'-0")

9A.5.5.23 Fire Area 74: RERS Filter Compartments (el 331'-0")

9A.5.6 Safe Shutdown Analysis - Diesel Generator Enclosures 9A.5.6.1 Fire Area 79: Diesel Generator Cell 1A (el 217'-0")

9A.5.6.2 Fire Area 80: Diesel Generator Cell 1C (el 217'-0")

9A.5.6.3 Fire Area 81: Diesel Generator Cell 1B (el 217'-0")

9A.5.6.4 Fire Area 82: Diesel Generator Cell 1D (el 217'-0")

9A.5.6.5 Fire Area 83: Diesel Generator Cell 2A (el 217'-0")

9A.5.6.6 Fire Area 84: Diesel Generator Cell 2C (el 217'-0")

9A.5.6.7 Fire Area 85: Diesel Generator Cell 2B (el 217'-0")

9A.5.6.8 Fire Area 86: Diesel Generator Cell 2D (el 217'-0")

9A.5.6.9 Fire Area 124: Diesel Generator Access Corridor for Unit 1 (el 217'-0")

9A.5.6.10 Fire Area 125: Diesel Generator Access Corridor for Unit 2 (el 217'-0")

9A.5.7 Safe Shutdown Analysis - Spray Pond Pump Structure 9A.5.7.1 Fire Area 122: Spray Pond Pump Structure, Western Half 9A.5.7.2 Fire Area 123: Spray Pond Pump Structure, Eastern Half 9A.5.8 Safe Shutdown Analysis - Turbine Enclosure 9A.5.8.1 Fire Area 87: Condensate Pump-Room (el 189'-0")

9A.5.8.2 Fire Area 88: Main Condenser Area and Feedwater Heater Rooms (el 200'-0" and el 239'-0")

9A.5.8.3 Fire Area 89: Reactor Feedwater Pump Lube Oil Areas, Control Rod Drive Water Pump Area, and Condensate Filter/Demineralizer Compartments (el 200'-0")

9A.5.8.4 Fire Area 90: Air Ejector and Steam Packing Exhauster Compartment (el 217'-0")

9A.5.8.5 Fire Area 91: Air Ejector and Steam Packing Exhauster Compartment (el 217'-0")

9A.5.8.6 Fire Area 92: Mechanical Vacuum Pump-Room (el 217'-0")

9A.5.8.7 Fire Area 93: Air Compressor Area, EHC Power Unit Area, and Turbine Lube Oil Storage Tank Area (el 217'-0")

9A.5.8.8 Fire Area 94: Reactor Feedwater Pump-Turbine Compartments and Reactor Feedwater Pump Access Area and 5-Line Outage Support Facility (el 217'-0")

9A.5.8.9 Fire Area 95: MCC Room, TECW Equipment Area, and Turbine Lube Oil Reservoir and Centrifuge Area (el 239'-0")

9A.5.8.10 Fire Area 96: Battery Room (el 239'-0")

9A.5.8.11 Fire Area 97: Equipment Hatch Corridor (el 239'-0")

9A.5.8.12 Fire Area 98: Reactor Recirculation Pump MG Set Area and Feedwater Heater Rooms (el 269'-0")

9A.5.8.13 Fire Area 99: Turbine Enclosure HVAC Area and Equipment Compartment Exhaust Filter Area (el 302'-0")

9A.5.8.14 Fire Area 100: Condensate Pump-Room (el 189'-0")

APPENDIX 9A 9A.iv REV. 20, SEPTEMBER 2020

LGS UFSAR 9A.5.8.15 Fire Area 101: Main Condenser Area and Feedwater Heater Rooms (el 200'-0" and el 239'-0")

9A.5.8.16 Fire Area 102: Reactor Feedwater Pump Lube Oil Areas, Control Rod Drive Water Pump Area, and Condensate Filter/Demineralizer Compartments (el 200'-0")

9A.5.8.17 Fire Area 103: Air Ejector and Steam Packing Exhauster Compartment (el 217'-

0")

9A.5.8.18 Fire Area 104: Air Ejector and Steam Packing Exhauster Compartment (el 217'-

0")

9A.5.8.19 Fire Area 105: Mechanical Vacuum Pump-Room (el 217'-0")

9A.5.8.20 Fire Area 106: Air Compressor Area, EHC Power Unit Area, and Turbine Lube Oil Storage Tank Area (el 217'-0")

9A.5.8.21 Fire Area 107: Reactor Feedwater Pump-Turbine Compartments and Reactor Feedwater Pump Access Area (el 217'-0")

9A.5.8.22 Fire Area 108: MCC Room, TECW Equipment Area, and Turbine Lube Oil Reservoir and Centrifuge Area (el 239'-0")

9A.5.8.23 Fire Area 109: Battery Room (el 239'-0")

9A.5.8.24 Fire Area 110: Equipment Hatch Corridor (el 239'-0")

9A.5.8.25 Fire Area 111: Reactor Recirculation Pump MG Set Area and Feedwater Heater Rooms (el 269'-0")

9A.5.8.26 Fire Area 112: Turbine Enclosure HVAC Area and Equipment Compartment Exhaust Filter Area (el 302'-0")

9A.5.8.27 Fire Area 113: Railroad Access Area and Generator Equipment Area (el 217'-0" and el 239'-0")

9A.5.8.28 Fire Area 114: Turbine Operating Floor (el 269'-0")

9A.5.9 Safe Shutdown Analysis - Radwaste Enclosure 9A.5.9.1 Fire Area 115: Radwaste Pipe Tunnel (el 183'-0", el 187'-0", el 191'-0", and el 200'-0")

9A.5.9.2 Fire Area 116: Miscellaneous Radwaste Equipment Areas (el 162'-0")

9A.5.9.3 Fire Area 117: Offgas Pipe Tunnel (el 186'-0" and el 187'-6")

9A.5.9.4 Fire Area 118: Miscellaneous Radwaste Equipment Areas (el 191'-0")

9A.5.9.5 Fire Area 119: Offgas Equipment Areas (el 195'-0")

9A.5.9.6 Fire Area 120: Radwaste Control Room, Laundry, Decontamination and Change Areas, Waste Drum Storage Room, and Cask Loading Area (el 217'-0"),

Renovated Area of Radwaste

Enclosure:

Data Acquisition Room, Storage Room, Sample Receipt and Storage Room, Source Storage/Standard's Preparation Room, Technician's Area (el 217'-0) Chemistry Laboratory: Hot Lab, Frisk Area (corridor - RCA), Office Area, Air Lock, Corridor (Non RCA), Conference/Lunch, Cold Lab, Toilets, Locker Vestibule; Count Room, Instrument Lab (el 217;-0");

Penthouse (el. 234'6")

9A.5.9.7 Fire Area 121: Centrifuge Rooms, Solid Radwaste Equipment Rooms, Ventilation Filter Compartments, and Supply and Exhaust Fan Areas (el 237'-0" and el 257'-

0")

9A.6 SPECIAL TOPICS 9A.6.1 Analysis of Associated Circuits 9A.6.1.1 Associated Circuits Involving Common Power Sources 9A.6.1.2 Associated Circuits Involving Spurious Operation 9A.6.1.3 Associated Circuits Involving Common Enclosures and Raceways APPENDIX 9A 9A.v REV. 20, SEPTEMBER 2020

LGS UFSAR 9A.6.1.4 Summary 9A.6.2 Analysis of High/Low Pressure Interfaces 9A.6.3 Fire Barrier Penetration Assemblies for 4 kV Bus Ducts 9A.6.4 Analysis of Effects of Multiple High Impedance Faults on the Safe Shutdown Capability of the Plant 9A.6.4.1 Methodology and Assumptions 9A.6.4.2 Results 9A.6.5 Minimum Effective Design Density (MEDD) 9A.6.5.1 Cable Tray Fires 9A.6.5.2 Oil Spill Fires 9A.6.5.3 Conclusion 9A.7 REFERENCES APPENDIX 9A 9A.vi REV. 20, SEPTEMBER 2020

LGS UFSAR APPENDIX 9A - FIRE PROTECTION EVALUATION REPORT LIST OF TABLES TABLE TITLE 9A-1 Fire Protection Evaluation 9A-2 Heat of Combustion Valves 9A-3 Insulation and Jacketing Materials Used for Electrical Cabling 9A-4 Major Components Analyzed for Fire Safe Shutdown 9A-5 Deleted 9A-6 Deleted 9A-7 Deleted 9A-8 Deleted 9A-9 Deleted 9A-10 Deleted 9A-11 Deleted 9A-12 RCPB Valves Susceptible to Fire Induced Spurious Operation 9A-13 Location of Critical High/Low Pressure Interface Valves by Fire Area 9A-14 Operations that may be Required to be Performed Outside the Control Room 9A-15 Deleted 9A-16 Deleted 9A-17 Deleted 9A-18 Deleted 9A-19 Deleted 9A-20 Deleted 9A-21 Deleted 9A-22 Deleted APPENDIX 9A 9A.vii REV. 20, SEPTEMBER 2020

LGS UFSAR LIST OF TABLES (Cont'd)

TABLE TITLE 9A-23 Deleted 9A-24 Deleted 9A-25 Deleted 9A-26 Deleted 9A-27 Deleted APPENDIX 9A 9A.viii REV. 20, SEPTEMBER 2020

LGS UFSAR APPENDIX 9A - FIRE PROTECTION EVALUATION REPORT LIST OF FIGURES FIGURE TITLE 9A-1 Piping and Instrument Diagram Legend 9A-2 P&ID Fire Protection 9A-3 Deleted 9A-4 General Floor Plan, el 162'-0", el 177'-0", el 180'-0" 9A-5 General Floor Plan, el 191'-0", el 195'-0", el 200'-0", el 201'-0" 9A-6 General Floor Plan, el 217'-0" 9A-7 General Floor Plan, el 237'-0", el 239'-0", el 253'-0", el 254'-0" 9A-8 General Floor Plan, el 257'-0", el 269'-0", el 283'-0", el 289'0", el 300'-3" 9A-9 General Floor Plan, el 302'-0", el 304'-0", el 313'-0", el 331'-0" 9A-10 General Floor Plan, el 332'-0", el 350'-0", el 352'-0" 9A-11 Spray Pond Pump Structure, el 237'-0" 9A-12 Spray Pond Pump Structure, el 251'-0", el 268'-0" 9A-13 Safeguard Aux. System Phase O.C. Protection and Coordination 9A-14 Safeguard Ac Switchgear Ground Overcurrent Relay Coordination 9A-15 Diesel Generator Protection Relays 9A-16 208/120 V Safeguard Ac Circuit Breaker Coordination 9A-17 125/250 Vdc System - Batteries Protective Device Coordination (Division I) 9A-18 125/250 Vdc System - Batteries Protective Device Coordination (Division II) 9A-19 125 Vdc System - Batteries Protective Device Coordination (Division III) 9A-20 125 Vdc System - Batteries Protective Device Coordination (Division IV) 9A-21 Auxiliary Equipment Room Arrangement APPENDIX 9A 9A.ix REV. 20, SEPTEMBER 2020

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