ML22111A220

2 to Updated Safety Analysis Report, Appendix E, Fire Protection Evaluation Report

ML22111A220
Person / Time
Site:	Clinton
Issue date:	03/31/2022
From:	Constellation Energy Generation
To:	Office of Nuclear Reactor Regulation
Shared Package
ML22111A226	List: ML22111A190 ML22111A191 ML22111A192 ML22111A193 ML22111A194 ML22111A195 ML22111A196 ML22111A197 ML22111A198 ML22111A199 ML22111A200 ML22111A202 ML22111A203 ML22111A205 ML22111A206 ML22111A207 ML22111A208 ML22111A209 ML22111A210 ML22111A211 ML22111A212 ML22111A214 ML22111A215 ML22111A216 ML22111A217 ML22111A218 ML22111A220 ML22111A222 ML22111A224 RS-22-048, 2 to Updated Safety Analysis Report, B 2.0 Safety Limits (Sls)
References
RS-22-048
Download: ML22111A220 (218)

Text

CPS/USAR FIRE PROTECTION EVALUATION REPORT CLINTON POWER STATION UNIT 1 TABLE OF CONTENTS PAGE 1.0 CLINTON POWER STATION FIRE PROTECTION EVALUATION E1.1-1 1.1 Introduction E1.1-1 1.2 Fire Protection Chronology E1.1-1 1.3 Results of NRC Review E1.1-2 1.4 Evaluation E1.1-2 1.4.1 Introduction E1.1-2 1.4.2 Reevaluation E1.1-2 1.5 Assumptions/Definitions E1.1-2 1.5.1 Assumptions E1.1-2 1.5.2 Definitions E1.1-2 1.6 Fire Hazards Analysis Methodology E1.1-3 2.0 FIRE PROTECTION EVALUATION REPORT (FPER)

PROCEDURES E2.1-1 2.1 Procedures for continuing Update of FPER E2.1-1 3.0 FIRE HAZARDS ANALYSIS E3.1-1 3.1 General E3.1-1 3.1.1 Introduction E3.1-1 3.1.2 General Plant Description E3.1-1 3.1.2.1 Introduction E3.1-1 3.1.2.2 Building Design E3.1-1 3.1.2.2.1 Concrete E3.1-1 3.1.2.2.2 Concrete Block E3.1-2 3.1.2.2.3 Precast Concrete Channel Roof Slabs E3.1-2 3.1.2.2.4 Siding E3.1-2 3.1.2.2.5 Roofing E3.1-3 3.1.2.2.6 Structural Steel Fireproofing E3.1-3 3.1.2.2.7 Suspended Ceilings E3.1-3 3.1.2.2.8 Floor Covering E3.1-4 3.1.2.2.9 Fire Doors E3.1-4 3.1.2.2.10 Fire Seals E3.1-4 3.1.2.2.11 Plumbing E3.1-5 3.1.2.2.12 Ventilation Fire Dampers E3.1-5 3.1.2.3 Electrical Cable Trays, Conduits, Panels, and Fire Stops E3.1-5 3.1.2.4 Ventilation Systems E3.1-6 3.1.2.5 Fire Detection System E3.1-7 APPENDIX E E-i REV. 11, JANUARY 2005

CPS/USAR 3.1.2.6 Fire Protection Water Supply System E3.1-7 3.1.2.7 Water Sprinkler and Hose Standpipe Systems E3.1-7 3.1.2.8 Halon Suppression Systems E3.1-8 3.1.2.9 Carbon Dioxide Suppression System E3.1-8 3.1.2.10 Portable Extinguishers E3.1-8 3.1.2.11 Turbine Building Class 1E Cables E3.1-8 AUXILIARY BUILDING FIRE AREA/ZONE INDEX E3.2-i 3.2 AUXILIARY BUILDING E3.2-1 3.2.1 Auxiliary Building - Fire Area A-1 E3.2-1 3.2.1.1 Zone A-1a E3.2-1 3.2.1.2 Zone A-1b E3.2-2 3.2.1.3 Zone A-1c E3.2-3 3.2.1.4 Zone A-1d E3.2-3 3.2.1.5 Zone A-1e E3.2-4 3.2.2 Auxiliary Building - Fire Area A-2 E3.2-5 3.2.2.1 Zone A-2a E3.2-5 3.2.2.2 Zone A-2b E3.2-6 3.2.2.3 Zone A-2c E3.2-7 3.2.2.4 Zone A-2d E3.2-8 3.2.2.5 Zone A-2e E3.2-9 3.2.2.6 Zone A-2f E3.2-10 3.2.2.7 Zone A-2g E3.2-11 3.2.2.8 Zone A-2h E3.2-12 3.2.2.9 Zone A-2i E3.2-13 3.2.2.10 Zone A-2j E3.2-13 3.2.2.11 Zone A-2k E3.2-14 3.2.2.12 Zone A-2m E3.2-15 3.2.2.13 Zone A-2n E3.2-16 3.2.2.14 Zone A-2o E3.2-17 3.2.3 Auxillary Building-Fire Area A-3 E3.2-18 3.2.3.1 Zone A-3a E3.2-18 3.2.3.2 Zone A-3b E3.2-19 3.2.3.3 Zone A-3c E3.2-20 3.2.3.4 Zone A-3d E3.2-21 3.2.3.5 Zone A-3e E3.2-22 3.2.3.6 Zone A-3f E3.2-23 3.2.3.7 Zone A-3g E3.2-24 APPENDIX E E-ii REV. 14, JANUARY 2011

CPS/USAR 3.2.4 Auxiliary Building-Fire Area A-4 E3.2-25 3.2.5 Auxiliary Building-Fire Area A-5 E3.2-26 3.2.6 Auxilliary Building-Fire Area A-6 E3.2-26 CONTAINMENT BUILDING FIRE AREA/ZONE INDEX E3.3-i 3.3 CONTAINMENT BUILDING E3.3-1 3.3.1 Containment Building - Fire Area C-1 E3.3-1 3.3.2 Containment Building- Fire Area C-2 E3.3-2 3.3.2.1 Elevation 712'-0" E3.3-2 3.3.2.2 Elevation 737'-0" E3.3-2 3.3.2.3 Elevation 755'-0" E3.3-3 3.3.2.4 Elevation 778'-0" E3.3-4 3.3.2.5 Elevation 789'-1" E3.3-6 3.3.2.6 Elevation 803'-3" E3.3-7 3.3.2.7 Elevation 816'-7" E3.3-8 3.3.2.8 Elevation 828'-3" E3.3-8 CONTROL BUILDING FIRE AREA/ZONE INDEX E3.4-i 3.4 CONTROL BUILDING E3.4-1 3.4.1 Control Building - Fire Area CB-1 E3.4-1 3.4.1.1 Zone CB-1a E3.4-1 3.4.1.2 Zone CB-1b E3.4-2 3.4.1.3 Zone CB-1c E3.4-3 3.4.1.4 Zone CB-1d E3.4-4 3.4.1.5 Zone CB-1e E3.4-5 3.4.1.6 Zone CB-1f E3.4-6 3.4.1.7 Zone CB-1g E3.4-7 3.4.1.8 Zone CB-1h E3.4-8 3.4.1.9 Zone CB-1i E3.4-9 3.4.2 Control Building - Fire Area CB-2 E3.4-10 3.4.3 Control Building - Fire Area CB-3 E3.4-11 3.4.3.1 Zone CB-3a E3.4-11 3.4.3.2 Zone CB-3b E3.4-12 3.4.3.3 Zone CB-3c E3.4-13 3.4.3.4 Zone CB-3d E3.4-14 3.4.3.5 Zone CB-3e E3.4-15 3.4.3.6 Zone CB-3f E3.4-16 APPENDIX E E-iii REV. 11, JANUARY 2005

CPS/USAR 3.4.3.7 Zone CB-3g E3.4-17 3.4.4 Control Building - Fire Area CB-4 E3.4-18 3.4.5 Control Building - Fire Area CB-5 E3.4-19 3.4.5.1 Zone CB-5a E3.4-19 3.4.5.2 Zone CB-5b E3.4-20 3.4.5.3 Zone CB-5c E3.4-21 3.4.6 Control Building - Fire Area CB-6 E3.4-21 3.4.6.1 Zone CB-6a E3.4-21 3.4.6.2 Zone CB-6b E3.4-23 3.4.6.3 Zone CB-6c E3.4-23 3.4.6.4 Zone CB-6d E3.4-24 3.4.7 Control Building - Fire Area CB-7 E3.4-25 DIESEL-GENERATOR BUILDING FIRE AREA/ZONE INDEX E3.5-i 3.5 DIESEL-GENERATOR BUILDING E3.5-1 3.5.1 Diesel-Generator Building Fire Area D-1 E3.5-1 3.5.2 Diesel-Generator Building Fire Area D-2 E3.5-2 3.5.3 Diesel-Generator Building Fire Area D-3 E3.5-3 3.5.4 Diesel-Generator Building Fire Area D-4 E3.5-4 3.5.4.1 Zone D-4a E3.5-4 3.5.4.2 Zone D-4b E3.5-5 3.5.5 Diesel-Generator Building Fire Area D-5 E3.5-6 3.5.5.1 Zone D-5a E3.5-6 3.5.5.2 Zone D-5b E3.5-7 3.5.6 Diesel-Generator Building Fire Area D-6 E3.5-8 3.5.6.1 Zone D-6a E3.5-8 3.5.6.2 Zone D-6b E3.5-9 APPENDIX E E-iv REV. 11, JANUARY 2005

CPS/USAR 3.5.7 Diesel-Generator Building Fire Area D-7 E3.5-10 3.5.8 Diesel-Generator Building Fire Area D-8 E3.5-11 3.5.9 Diesel-Generator Building Fire Area D-9 E3.5-12 3.5.10 Diesel-Generator Building Fire Area D-10 E3.5-12 FUEL BUILDING FIRE AREA/ZONE INDEX 3.6 FUEL BUILDING E3.6-1 3.6.1 Fuel Building - Fire Area F-1 E3.6-1 3.6.1.1 Zone F-1a E3.6-1 3.6.1.2 Zone F-1b E3.6-2 3.6.1.3 Zone F-1c E3.6-3 3.6.1.4 Zone F-1d E3.6-3 3.6.1.5 Zone F-1e E3.6-4 3.6.1.6 Zone F-1f E3.6-5 3.6.1.7 Zone F-1g E3.6-6 3.6.1.8 Zone F-1h E3.6-6 3.6.1.9 Zone F-1i E3.6-7 3.6.1.10 Zone F-1j E3.6-8 3.6.1.11 Zone F-1k E3.6-9 3.6.1.12 Zone F-1m E3.6-10 3.6.1.13 Zone F-1n E3.6-11 3.6.1.14 Zone F-1o E3.6-11 3.6.1.15 Zone F-1p E3.6-12 3.7 CIRCULATING WATER SCREEN HOUSE FIRE AREA/ZONE INDEX E3.7-i 3.7.1 Circulating Water Screen House Fire Area M-1 E3.7-1 3.7.2 Circulating Water Screen House Fire Area M-2 E3.7-2 3.7.2.1 Zone M-2a E3.7-2 3.7.2.2 Zone M-2b E3.7-2 3.7.2.3 Zone M-2c E3.7-3 APPENDIX E E-v REV. 11, JANUARY 2005

CPS/USAR 3.7.3 Circulating Water Screen House Fire Area M-3 E3.7-4 3.7.4 Circulating Water Screen House Fire Area M-4 E3.7-5 RADWASTE BUILDING FIRE AREA/ZONE INDEX E3.8-i 3.8 RADWASTE BUILDING E3.8-1 3.8.1 Radwaste Building - Fire Area R-1 E3.8-1 3.8.1.1 Zone R-1a E3.8-1 3.8.1.2 Zone R-1b E3.8-2 3.8.1.3 Zone R-1c E3.8-3 3.8.1.4 Zone R-1d E3.8-4 3.8.1.5 Zone R-1e E3.8-5 3.8.1.6 Zone R-1f E3.8-6 3.8.1.7 Zone R-1g E3.8-7 3.8.1.8 Zone R-1h E3.8-7 3.8.1.9 Zone R-1i E3.8-9 3.8.1.10 Zone R-1j E3.8-10 3.8.1.11 Zone R-1k E3.8-11 3.8.1.12 Zone R-1m E3.8-12 3.8.1.13 Zone R-1n E3.8-13 3.8.1.14 Zone R-1o E3.8-14 3.8.1.15 Zone R-1p E3.8-15 3.8.1.16 Zone R-1q E3.8-16 3.8.1.17 Zone R-1r E3.8-17 3.8.1.18 Zone R-1s E3.8-18 3.8.1.19 Zone R-1t E3.8-19 3.8.1.20 Zone R-1u E3.8-20 TURBINE BUILDING FIRE AREA/ZONE INDEX E3.9-i 3.9 TURBINE BUILDING E3.9-1 3.9.1 Turbine Building - Fire Area T-1 E3.9-1 3.9.1.1 Zone T-1a E3.9-1 3.9.1.2 Zone T-1b E3.9-2 3.9.1.3 Zone T-1c E3.9-2 3.9.1.4 Zone T-1d E3.9-3 3.9.1.5 Zone T-1e E3.9-4 3.9.1.6 Zone T-1f E3.9-5 3.9.1.7 Zone T-1g E3.9-6 3.9.1.8 Zone T-1h E3.9-7 3.9.1.9 Zone T-1i E3.9-8 3.9.1.10 Zone T-1j E3.9-9 3.9.1.11 Zone T-1k E3.9-9 3.9.1.12 Zone T-1m E3.9-10 APPENDIX E E-vi REV. 18, OCTOBER 2016

CPS/USAR 3.9.1.13 Zone T-1n E3.9-11 4.0 COMPLIANCE WITH BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS E4.1-1 A. Overall Requirements of Nuclear Plant Fire Protection Program E4.1-1 B. Administrative Procedures, Controls, and Fire Brigade E4.1-4 C. Quality Assurance Program E4.1-9 D. General Guidelines for Plant Protection E4.1-12 E. Fire Detection and Suppression E4.1-30 F. Guidelines for Specific Plant Areas E4.1-40 G. Special Protection Guidelines E4.1-53 APPENDIX E E-vii REV. 14, JANUARY 2011

CPS/USAR FIRE PROTECTION EVALUATION REPORT CLINTON POWER STATION UNIT 1 LIST OF FIGURES FIRE PROTECTION DRAWINGS NUMBER TITLE FP-1 Fire Protection Legend FP-2a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment Basement Floor Plan - Elevations 707'-0" and 712'-0" FP-2b Fire Protection Features - Auxiliary, Fuel Building and Containment Basement Floor Plan - Elevations 707'-0" and 712'-0" FP-3a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment Grade Floor Plan - Elevation 737'-0" FP-3b Fire Protection Features - Auxiliary, Fuel Building and Containment Grade Floor Plan - Elevation 737'-0" FP-4a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment Mezzanine Floor Plan - Elevations 755'-0" and 762'-0" FP-4b Fire Protection Features - Auxiliary, Fuel Building and Containment Mezzanine Floor Plan - Elevations 755'-0" and 762'-0" FP-5a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment Plan -

Elevations 778'-0" and 781'-0" FP-5b Fire Protection Features - Auxiliary, Fuel Building and Containment Plan -

Elevations 778'-0" and 781'-0" FP-6a Fire Zone Boundaries - Containment Floor Plan - Elevation 803'-3" FP-6b Fire Protection Features - Containment Floor Plan - Elevation 803'-3" FP-7a Fire Zone Boundaries - Containment Refueling Floor Elevation 828'-3" FP-7b Fire Protection Features - Containment Refueling Floor Elevation 828'-3" FP-8a Fire Zone Boundaries - Control and Diesel-Generator Building Basement Floor Plan - Elevations 702'-0" and 712'-0" FP-8b Fire Protection Features - Control and Diesel-Generator Building Basement Floor Plan - Elevations 702'-0" and 712'-0" FP-9a Fire Zone Boundaries - Control and Diesel-Generator Building Floor Plan -

Elevation 719'-0" FP-9b Fire Protection Features - Control and Diesel-Generator Building Floor Plan -

Elevation 719'-0" FP-10a Fire Zone Boundaries - Control and Diesel-Generator Building Grade Floor Plan - Elevation 737'-0" FP-10b Fire Protection Features - Control and Diesel-Generator Building Grade Floor Plan - Elevation 737'-0" FP-11a Fire Zone Boundaries - Control Building Intermediate Roof Plan - Elevation 751'-0" FP-11b Fire Protection Features - Control Building Intermediate Roof Plan - Elevation 751'-0" FP-12a Fire Zone Boundaries - Control and Diesel-Generator Building Mezzanine Floor Plan - Elevation 762'-0" FP-12b Fire Protection Features - Control and Diesel-Generator Building Mezzanine Floor Plan - Elevation 762'-0" FP-13a Fire Zone Boundaries - Control Building Floor Plan - Elevation 781'-0" FP-13b Fire Protection Features - Control Building Floor Plan Elevation 781'-0" APPENDIX E E-viii REV. 11, JANUARY 2005

CPS/USAR LIST OF FIGURES: FIRE PROTECTION DRAWINGS (Cont.)

NUMBER TITLE FP-14a Fire Zone Boundaries - Control Building Main Floor Plan Elevation 800'-0" FP-14b Fire Protection Features - Control Building Main Floor Plan Elevation 800'-0" FP-15a Fire Zone Boundaries - Control Building Ventilation Room Floor Plan -

Elevation 825'-0" FP-15b Fire Protection Features - Control Building Ventilation Room Floor Plan -

Elevation 825'-0" FP-16a Fire Zone Boundaries - Radwaste Building Floor Plan Elevation 702'-0" FP-16b Fire Protection Features - Radwaste Building Floor Plan Elevation 702'-0" FP-17a Fire Zone Boundaries - Radwaste Building Intermediate Floor Plan -

Elevation 720'-6" FP-17b Fire Protection Features - Radwaste Building Intermediate Floor Plan -

Elevation 720'-6" FP-18a Fire Zone Boundaries - Radwaste Building Grade Floor Plan Elevation 737'-

0" FP-18b Fire Protection Features - Radwaste Building Grade Floor Plan Elevation 737'-0" FP-19a Fire Zone Boundaries - Radwaste Building Mezzanine Floor Plan - Elevation 762'-0" FP-19b Fire Protection Features - Radwaste Building Mezzanine Floor Plan -

Elevation 762'-0" FP-20a Fire Zone Boundaries - Turbine Building Floor Plan - Elevation 712'-0" FP-20b Fire Protection Features - Turbine Building Floor Plan Elevation 712'-0" FP-21a Fire Zone Boundaries - Turbine Building Grade Floor Plan Elevation 737'-0" FP-21b Fire Protection Features - Turbine Building Grade Floor Plan Elevation 737'-

0" FP-22a Fire Zone Boundaries - Turbine Building Mezzanine Floor Plan Elevation 762'-0" FP-22b Fire Protection Features - Turbine Building Mezzanine Floor Plan - Elevation 762'-0" FP-23a Fire Zone Boundaries - Turbine Building Intermediate Floor Plan - Elevation 781'-0" FP-23b Fire Protection Features - Turbine Building Intermediate Floor Plan -

Elevation 781'-0" FP-24a Fire Zone Boundaries - Turbine Building Main Floor Plan Elevation 800'-0" FP-24b Fire Protection Features - Turbine Building Main Floor Plan Elevation 800'-0" FP-25a Fire Zone Boundaries - Circulating Water Screen House Main Floor Plan A-A FP-25b Fire Protection Features - Circulating Water Screen House Main Floor Plan A-A FP-26a Fire Zone Boundaries - Circulating Water Screen House Base Mat Plan FP-27a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment - Section B-B FP-27b Fire Protection Features - Auxiliary, Fuel Building and Containment - Section B-B FP-28a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment - Section D-D APPENDIX E E-ix REV. 11, JANUARY 2005

CPS/USAR LIST OF FIGURES: FIRE PROTECTION DRAWINGS (Cont.)

NUMBER TITLE FP-28b Fire Protection Features - Auxiliary, Fuel Building and Containment - Section D-D FP-29a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment - Section F1-F1 FP-29b Fire Protection Features - Fuel Building - Section F1-F1 FP-30a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment - Section F2-F2 FP-30b Fire Protection Features - Fuel Building and Containment Section F2-F2 FP-31a Fire Zone Boundaries - Auxiliary, Fuel Building and Containment - Section G-G FP-31b Fire Protection Features - Fuel Building and Containment Section G-G FP-32a Fire Zone Boundaries Auxiliary, Fuel Building and Containment - Section H-H FP-32b Fire Zone Boundaries Auxiliary, Fuel Building and Containment - Section H-H FP-33a Fire Zone Boundaries Diesel Generator Building Section G-G FP-33b Fire Protection Features Diesel-Generator Building Section G-G FP-34a Fire Zone Boundaries Control Building Section G1-G1 FP-34b Fire Protection Features Control Building Section G1-G1 FP-35a Fire Zone Boundaries Control Building Section H-H FP-35b Fire Protection Features Control Building Section H-H FP-36a Fire Zone Boundaries Control & Diesel Generator Building Section A-A FP-36b Fire Protection Features Control & Diesel Generator Building Section A-A APPENDIX E E-x REV. 11, JANUARY 2005

CPS/USAR LIST OF FIGURES CABLE TRAY DRAWINGS NUMBER TITLE 1 Fire Hazards Legend 2 General Arrangement Auxiliary, Fuel Building and Containment Basement Floor Plan - Elevations 707'-0" and 712'-0" 3 General Arrangement Auxiliary, Fuel Building and Containment Grade Floor Plan - Elevation 737'-0" 4 General Arrangement Auxiliary, Fuel Building and Containment Mezzanine Floor Plan - Elevations 755'-0" and 762'-0" 5 General Arrangement Auxiliary, Fuel Building and Containment Plan-Elevations 778'-0" and 781'-0" 6 General Arrangement - Containment Floor Plan - Elevation 803'-3" 7 General Arrangement - Control and Diesel-Generator Building Basement Floor Plan - Elevations 702'-0" and 712'-0" 8 General Arrangement - Control Building Floor Plan - Elevation 719'-0" 9 General Arrangement - Control and Diesel-Generator Building Grade Floor Plan - Elevation 737'-0" 10 General Arrangement - Control and Diesel-Generator Building Mezzanine Floor Plan - Elevation 762'-0" 11 General Arrangement - Control Building Floor Plan - Elevation 781'-0" 12 General Arrangement - Control Building Main Floor Plan Elevation 800'-0" 13 General Arrangement - Control Building Ventilation Room Floor Plan -

Elevation 825'-0" 14 General Arrangement - Radwaste Building Basement Plan Elevation 702'-0" 15 General Arrangement - Radwaste Building Intermediate Floor Plan -

Elevation 720'-6" 16 General Arrangement - Radwaste Building Grade Floor Plan Elevation 737'-

0" 17 General Arangement - Radwaste Building Mezzanine Floor Plan - Elevation 7620 18 General Arrangement - Turbine Buillding floor Plan - Elevation 712-0 19 General Arrangement - Turbine Building Grade Floor Plan Elevation 737-0 20 General Arrangement - Turbine Building Mexxanine Floor Plan - Elevation 762-0 21 General Arrangement - Turbine Building Intermediate Floor Plan - Elevation 781-0 22 General Arrangment - Circulating Water Screen House Main Floor Plan A-A APPENDIX E E-xi REV. 11, JANUARY 2005

CPS/USAR DRAWING CITED IN THIS APPENDIX*

• The listed drawing is included as a General Reference only; i.e., refer to the drawing to obtain additional detail or to obtain background information. This drawing is not part of the USAR. It is controlled by the Controlled Documents Program.

DRAWING* SUBJECT M05-1039 Fire Protection APPENDIX E E-xii REV. 11, JANUARY 2005

CPS/USAR 1.0 CLINTON POWER STATION FIRE PROTECTION EVALUATION

1.1 INTRODUCTION

The purpose of this report is to summarize the fire hazards analysis which has been performed for the Clinton Power Station (CPS) and to provide the design information which was the basis for the analysis.

Chapter 1 provides a brief history of the fire protection aspects of licensing for Clinton (Section 1.2), a summary of NRC evaluations of CPS fire protection design (Section 1.3), a general fire protection evaluation (Section 1.4), a listing of assumptions used in the analysis (Section 1.5), and a description of the methodology used to perform the evaluation (Section 1.6).

Chapter 2 discusses the procedures which were used to prepare and document the fire hazards analysis and the procedures which will be used to update the Fire Protection Evaluation Report.

Chapter 3, Section 3.1 identifies the CPS construction, equipment, and system characteristics which were used in the fire hazards analysis. Sections 3.2 - 3.9 provide the fire hazards analysis for each fire area and zone. The contents of this chapter include the fire hazard classification and fire rating of building materials, combustible loading for electrical cables, motor control centers and switchgear, description of ventilation systems, and descriptions of fire detection and suppression systems. Each fire area/zone is described, major safety-related equipment located in the area/zone is identified, combustible material and fire loading for the area/zone is stated, fire protection and detection available in the area/zone is described, and a hazards summary is provided.

Chapter 4 provides an evaluation of compliance of the Clinton Power Station Fire Protection Program with the requirements of BTP APCSB 9.5-1 Appendix A.

The Nuclear Regulatory Commission issued a Memorandum and Order (CLI-80-21) on May 23, 1980, that stated that the combination of the guidance contained in Appendix A to BTP APCSB 9.5-1 and the technical requirements set forth in Appendix R to 10 CFR 50 define the essential elements for an acceptable fire protection program at Clinton Power Station. Therefore, the NRC staff has used the technical requirements of Appendix R to 10 CFR 50 and Appendix A to BTP APCSB 9.5-1 as guidelines in its evaluation of Clinton's fire protection program.

1.2 FIRE PROTECTION CHRONOLOGY In response to R. S. Boyd's (NRC) September 30, 1976 letter to L. J. Koch (IPC), IPC performed a reevaluation of the Clinton Fire Protection Program and submitted the Clinton Fire Protection Evaluation Report (FPER) to the NRC on April 12, 1978. On December 1, 1979, the Clinton FSAR was submitted to the NRC; FSAR Subsection 9.5.1 provided additional detailed information on the design of fire protection and detection systems and administrative fire protection controls.

On November 19, 1980, the NRC issued the fire protection rule, 10 CFR 50.48 and 10 CFR 50 Appendix R. The Clinton Safety Evaluation Report (SER) was issued in February 1982; the SER found the Clinton Fire Protection Program acceptable but required a Safe Shutdown Analysis (SSA) per the requirements of 10 CFR 50 Appendix R. In response, IPC performed an SSA for Clinton and submitted it to the NRC on December 16, 1982. Subsequent to IPC's submittals of the FPER and SSA, many guidance documents were issued by the NRC to clarify various aspects of their fire protection requirements. In order to update the two reports to reflect current design and to incorporate recent NRC guidance, IPC decided that a complete review of the Clinton fire hazards analysis and safe shutdown analysis would be performed. This revised report reflects the review of the fire hazards analysis.

APPENDIX E E1.1-1 REV. 12, JANUARY 2007

CPS/USAR 1.3 RESULTS OF NRC REVIEW The NRC has documented the results of their review of the Clinton Fire Protection Program in the Clinton Safety Evaluation Report (SER) issued in February 1982, SER Supplement 1 issued in July 1982, and SER Supplement 3 issued in May 1984. The SER and its supplements reported that the Fire Protection Program was acceptable based on the information provided and commitments which were made. Additionally, several deviations to the fire protection regulations were granted in these documents for design features which provided an equivalent level of protection.

Additional staff positions and clarification developed by NRC regarding 10 CFR 50 Appendix R have been addressed in this reevaluation. This reevaluation has, therefore, assessed previous commitments to assure that an adequate level of fire protection has been provided.

1.4 EVALUATION 1.4.1 Introduction This review was made to compare the original 1978 submittal to the NRC with respect to current plant design considering current requirements of 10 CFR 50 Appendix R as updated by NRC staff positions and clarifications, i.e., Generic Letter 85-01.

1.4.2 Reevaluation task force To accomplish the task, IPC's Clinton Architect-Engineer, Sargent & Lundy, assigned Mr.

Richard Pollock as project leader for the reevaluation. The project team consisted of individuals from Architectural, Mechanical, Project Management, Mechanical Design and Drafting, HVAC, Nuclear Safeguards & Licensing, and Electrical Project Engineering Divisions. A third party independent review by a qualified fire protection consultant was provided by Mr. Kenneth W.

Dungan, P.E., President, Professional Loss Control (PLC). Heading up Illinois Power's review of the project were Mr. Robert T. Kerestes, P.E., Project Manager - Fire Protection and Mr. Ram P. Bhat, P.E., supervisor of IPC's HVAC and Fire Protection Engineering and a qualified fire protection engineer.

1.5 ASSUMPTIONS/DEFINITIONS 1.5.1 Assumptions This fire hazards analysis was based on the following assumptions:

a. Fire areas are bounded by fire barriers rated at least 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> except for specifically identified fire barriers which have been evaluated and justified as adequate in the Safe Shutdown Analysis. Exterior walls to fire areas are not fire rated unless there is an exterior exposure hazard.

b. Fire zones are subdivisions of fire areas defining natural divisions in fire areas for the purpose of discussion.

1.5.2 Definitions Fire loadings are categorized in the Clinton Power Station as follows:

APPENDIX E E1.1-2 REV. 11, JANUARY 2005

CPS/USAR Classification Fireload (BTU/ft2) Fire Severity (min) negligible less than or equal to 1,000 less than or equal to 0.75 low below 40,000 below 30 moderate 40,000 to 152,000 30 to 114 high above 152,000 above 114

• The classification of negligible quantities of combustibles is limited to use in Transient Combustible Free Zones (TCFZs) as follows:

a. the amount of identified transient combustible materials does NOT impact the fire zone classification (i.e., changing the fire zone from Low to Moderate or Moderate to High); and

b. the amount of identified transient combustible materials does NOT impact any "adequate for the hazard" fire barrier justifications; and

c. limits the intervening combustibles to negligible quantity of combustibles of no more than 1,000 Btu/ft2 calculated to the square footage of the TCFZs, thereby ensuring there is insufficient heat potential to propagate a fire to the cold side.

(Note: there are two exceptions: 737 Control and 751 Control TCFZs are limited to 700 BTU/ft2 due to impacts on the fire zone classification); and

d. either of the following:

i. limits the intervening combustibles to incidental as-found transient combustibles (i.e., inadvertently or accidentally left in a TCFZ); or, ii. requires transient combustible material to be maintained in an arrangement/configuration that does not support a propagation path across the zone.

1.6 FIRE HAZARDS ANALYSIS METHODOLOGY A systematic approach was taken for evaluating and protecting plant fire hazards. Fire areas were defined to establish separation criteria for safe shutdown division and safety related equipment. Fire areas are further divided into zones using natural divisions for the purposes of describing plant construction features, equipment, fire hazards, and protection. The hazards contained in plant fire zones were identified by quantifying the amount, type, and nature of the combustibles in the zone. Conservative methodology was used to quantify the contributions of cable insulation and lubricants to the combustible loading. The likelihood and type of potential transient combustibles were considered in the selection and level of fire protection provided.

Fire protection provided for each fire zone was evaluated and described in this report, including Figures FP-1 through FP-36a/b which show zone boundaries, fire barriers, fire suppression, and areas established as Transient Combustible Free Zones (placement of transient combustible material in these areas without prior approval and additional compensatory measures is PROHIBITED in modes, 1, 2, and 3). See additional information regarding "Negligible" quantities of combustibles in TCFZs in Section 1.5.

The information accumulated in this analysis was used as input for the SSA to verify that a fire anywhere in the plant will not prevent safe shutdown. This information was also used to evaluate compliance with NRC fire protection guidelines, as documented in Chapter 4.0.

APPENDIX E E1.1-3 REV. 14, JANUARY 2011

CPS/USAR 2.0 FIRE PROTECTION EVALUATION REPORT (FPER) PROCEDURES 2.1 PROCEDURES FOR CONTINUING UPDATE OF FPER The impact of plant design modifications on the FPER and the SSA will be assessed as part of plant design review and safety evaluation procedures. The FPER will be updated as required to reflect changes resulting from design modifications, backfits, or completion of work in progress.

Procedures in use provide instructions and responsibilities for processing the proposed changes and amendments to the FPER and SSA. Revisions will be issued to the FPER and SSA to incorporate changes as necessary as part of the USAR update.

APPENDIX E E2.1-1 REV. 11, JANUARY 2005

CPS/USAR 3.0 FIRE HAZARDS ANALYSIS 3.1 GENERAL 3.1.1 Introduction This section of the report contains the results of the fire hazards analysis as required by Sections A.2 and D.1(b) of Appendix A to Branch Technical Position APCSB 9.5-1. These results have been utilized in reevaluating the existing fire protection program and in providing a basis for the comparison of this program with the guidelines of Appendix A, as given in Section 4.0 of this report.

The applicable NFPA Codes were used as guidelines in the design and construction of Clinton's fire protection features.

3.1.2 General Plant Description 3.1.2.1 Introduction The information developed in this report is for the Clinton Power Station, a GE BWR/6 boiling water reactor.

The containment design employs the drywell/pressure suppression features of the GE BWR-Mark III containment concept. The containment is a right cylindrical, reinforced concrete, steellined pressure vessel with a hemispherical dome.

3.1.2.2 Building Design Information on the composition of materials making up the structural elements in the plant and fire resistance ratings obtained from results of tests on rated materials are presented in this section. In addition, data for untested materials which are given as equivalent ratings were obtained by extrapolating results of related fire tests. The fire rating is established according to the elements of walls, floor and roof slabs, or ceiling slabs comprising each fire area or zone.

The fire barrier rating is established based upon an analysis of structural materials and penetration seals. Penetrations include: access openings and clearance for deflection as well as HVAC, electrical, mechanical, and plumbing. The fire ratings given in this section take into consideration structural members and protective coverings. Where noted in Subsection 3.1.2.2, the term "fire classification" refers to the surface burning characteristics of the material as determined by the standard test method outlined in ASTM E84.

3.1.2.2.1 Concrete The concrete used in the construction of walls, floor slabs, and ceiling or roof slabs was a mix of cement, sand, water, and carbonate-type aggregate. Test results of Portland Cement Association Development Laboratories indicate that a 5-3/4-inch-thick concrete slab used as either a floor, wall, or roof will provide a 3-hour fire rated barrier.

According to "Reports of Fire Tests of Reinforced Concrete Slabs and Beam Floors," by Underwriters' Laboratories, Inc., tests R3390-5 and R3390-17, a 6-inch-thick concrete slab with a 1-inch protection to steel reinforcement has a 3-hour rating. Removable concrete floor and roof slabs assemblies have not been tested but based on related data are equivalent to a 3-hour APPENDIX E E3.1-1 REV. 11, JANUARY 2005

CPS/USAR rated barrier when they have a 3-inch minimum bearing in the direction of the span, with a maximum 6-inch by 1/4-inch thick exposed steel plate frame. Watertight removable slabs are sealed with silicone caulk.

3.1.2.2.2 Concrete Block Hollow concrete block used in construction of fire barrier masonry walls and as a fire resistive covering on steel beams and columns conforms to the requirements of ASTM C-90, Grade N, Type 1, Moisture Controlled Units. These blocks are 2-cell units manufactured of normal weight limestone aggregate. Walls are constructed using 3/8 inch-thick horizontal and vertical mortar joints with steel truss-type continuous reinforcing placed in every second course.

Test results based on equivalent thicknesses in accordance with Underwriters Laboratories UL618 "Standard for Concrete Masonry Units" indicate that the nominal 8- x 8- x 16- inch concrete block units will provide a 1.9-hour fire rated barrier and the nominal 6- x 8- x 16-inch blocks will provide a 1-hour fire rated wall. Similarly, by extrapolation, the nominal 12- x 8- x 16-inch concrete block will provide a 3-hour fire-rated barrier.

Solid concrete blocks (75% net cross-sectional area) used in the construction of walls conform to the requirements of ASTM C-145, Grade N, Type 1, Moisture Controlled Units. These blocks are manufactured of normal weight limestone aggregate and test results from the National Concrete Masonry Association indicate that both a nominal 8- x 8- x 16-inch and 12- x 8- x 16-inch block will provide a 3-hour fire rated barrier.

3.1.2.2.3 Precast Concrete Channel Roof Slabs Precast concrete channel roof slabs are composed of Portland Cement and lightweight aggregate, and conform to the requirements of the American Concrete Institute Document 525-

63. Slabs are "channel" design, 24 inches wide, having 3-1/2-inch thick reinforced concrete legs, and a 1-1/4-inch thick concrete web reinforced with steel welded wire fabric, and are anchored to supporting steel members with metal clips. Since the precast channel slabs are used only in conjunction with a complete roof assembly, the fire protection considerations are more directly related to the data presented in Subsection 3.1.2.2.5.

3.1.2.2.4 Siding The exterior insulated siding wall system is constructed of a fluted metal exterior sheet, flat liner panels, insulation, and subgirts. The following systems are based on information from H. H.

Robertson, the manufacturer.

Fluted metal exterior sheet is constructed of steel with a minimum 22 gauge, 28- to 40 inch width and 1-1/2-inch depth of fluting. Protection of siding is Galbestos, with asphalt-impregnated felt applied with metallic adhesive and resin base coating. The exterior siding fire classification is: flame spread 45, fuel contribution 10, and smoke developed 35-180. The corrugated closures are premolded neoprene.

Flat liner panels are constructed with a minimum 20 gauge galvanized steel, 24-inch width, and 1-3/8-inch depth, ASTM 525, rating G60 JLA 60. Joints are concealed with interlocking male and female side joints with factory applied sponge neoprene vapor seal or continuous caulking.

Sealing tape is PT1 Part T-301, 606 architectural tape, 1/8-inch thick by 1/2-inch depth consisting of two or three strips. The liner panel fire classification is: flame spread 5, fuel APPENDIX E E3.1-2 REV. 11, JANUARY 2005

CPS/USAR contribution 0, smoke developed 0. The neoprene, caulking, and PT1 tape is not present in significant amounts.

Insulation is fibrous glass minimum weight 1.5 pcf and minimum thickness 1-1/2 inches. The insulation classification is: flame spread 20, fuel contribution 5, smoke developed 5. The classification for the seal caulking is unavailable.

The exterior uninsulated siding wall in the building is typically constructed with fluted metal exterior sheets and subgirts. Construction is identical to the insulated siding with the exception that there is no insulation or liner panels and all joints are continuously caulked. The gas control boundary of the containment building is identical to exterior insulated siding, with liner panels being a part of the construction except that there is no insulation.

The interior uninsulated siding wall is constructed of flat liner panels. Construction of the liner panel is identical to the construction of liner panels in the exterior insulated siding, as discussed above.

3.1.2.2.5 Roofing Roofing systems on precast concrete slabs, poured concrete, and/or metal decking are in accordance with the requirements of Underwriters' Laboratories for "Class A" roof coverings.

The roofing assembly over metal decking meets the requirements of the Factory Mutual System for Class 1 construction. Roofing systems consist of a vapor barrier, insulation and other materials (chipped rock, pavers, asphalt, etc.) which are installed over non combustible roof decking of the permanent structures.

3.1.2.2.6 Structural Steel Fireproofing Where designated on the drawings, exposed structural steel beams and columns within fire areas or zones have been provided with a fire-resistive coating. This coating is "Cafcote H" cementitious material produced by U.S. Mineral Products Company, or its approved equal, and provides the exposed steel with a 3-hour rated fire protection. In addition to this steel, some exposed steel columns also located within fire areas or zones have been encased in "Firecode" gypsum wallboard rather than coated with the "Cafcote H" product. This wallboard assembly provides a 3-hour fire protection rating to the steel columns.

3.1.2.2.7 Suspended Ceilings The suspended ceilings are constructed primarily of noncombustible materials with the suspension systems fabricated of galvanized metal main runners and interlocking cross tees and minimum 12-gauge annealed wire hangers. Ceiling tiles are 3/4-inch-thick, 12- x 12-inch square noncombustible mineral fiber with a fire classification of: flame spread 15 and smoke developed 0. Suspended plaster ceilings consist of expanded metal lath attached to galvanized steel channel runners suspended by No. 8 wire hangers. Plaster material is Portland Cement Plaster applied in three coats (brown, scratch, and finish coats) to a thickness (including the metal lath dimension) of 7/8 inch. All suspension and plaster materials are considered to be noncombustible and the finish plaster coat fire classification is: flame spread 10, fuel contribution 0, smoke developed 0.

APPENDIX E E3.1-3 REV. 11, JANUARY 2005

CPS/USAR 3.1.2.2.8 Floor Covering The vinyl floor tile and wall base have a fire classification of: flame spread 30, fuel contribution 0, and smoke developed 415. Since the structural support for the vinyl flooring is a noncombustible concrete slab and the material thickness is only 1/8 inch, the fire classification results are not considered to be significant to this report. The vinyl floor tile and wall base materials have not been tested for potential heat values.

Polyurethane seamless flooring is used for ease of maintenance in areas where radioactive contamination is a possibility. The flooring is manufactured by General Polymers Corp. and has a fire classification of: flame spread 10, fuel contribution 5, smoke developed 0.

Inorganic coating is applied to Class 1 locations inside Containment. A self-leveling epoxy is appied to non-Class 1 locations outside Containment.

Carpeting consisting of low nap carpet tiles is utilized in areas where improved aesthetics, acoustics and general working environment are desired. Carpet tiles will have a nylon face and polyester-vinyl-calcium carbonate based back and a Critical Radiant Flux and Specific Optical Density within the ANI Property Loss Control Guidelines for Electronic Equipment "greater than or equal to 0.45 watts/sq. cm" and "as low as possible, approaching zero" for the respective criteria.

3.1.2.2.9 Fire Doors Access openings in fire barrier walls are closed with fire rated doors or equivalent. These doors carry a 3-hour fire rating or a 1-1/2 hour fire rating. The 1-1/2 hour fire doors when used for stairway access in stairwell enclosure walls have a 450q temperature rise restriction. Other 1-1/2 hour fire doors and 3-hour fire doors do not have any such temperature rise restriction.

Where vision lights were required, they are of a maximum size of 100 in2 in area and are located in 1-1/2 hour fire doors only. Elevator hoistway doors are 1-1/2 hour fire rated doors.

In areas where the danger of flooding exists, watertight bulkhead doors are used. (USAR 3.4.1, Food Protection) Watertight doors installed in some 3-hour walls have not been tested for a fire rating, but are considered at least equivalent to a 3-hour fire door. (SER 9.5.2.2) 3.1.2.2.10 Fire Seals Penetrations through fire barriers such as mechanical piping, external conduit and cable trays, will be sealed with fire rated seals. Internal electrical conduit fire rated seals are not required for electrical conduits which satisfy any of the below criteria:

Conduits that terminate in junction boxes or other noncombustible closure need no additional sealing. Conduits that run through an area but do not terminate in that area need not be sealed in that area.

Conduits smaller than 2" diameter that terminate 1 foot or greater from the barrier need not be sealed.

Open conduits of 2" diameter that terminate 3 feet or greater from the barrier need not be sealed.

Open conduit of greater than 2" in diameter that terminate 3 feet or greater from the barrier and have a cable fill of 40% or greater need not be sealed.

APPENDIX E E3.1-4 REV. 14, JANUARY 2011

CPS/USAR In the case of ventilation ductwork, fire dampers are used within the duct to prevent compromise of the fire barrier integrity of the wall.

Non-load-bearing concrete and concrete block walls are constructed with a gap between the top of the wall and the underside of the ceiling slabs or structural members above the wall.

Depending upon the type of wall construction, this gap varies from 1 to 2 inches. To prevent horizontal transfer of certain loads such as seismic loading from one area or building to another, vertical gaps have also been provided at the ends or intersection of walls in these areas. All such structural gap seal configurations in walls designated as fire barriers are tested in accordance with ASTM-E119 to achieve a fire rating equivalent to the fire barrier.

3.1.2.2.11 Plumbing A floor drain system is installed throughout the plant to drain and convey fire protection water, tank leakage and ruptures, oil leaks, and washdown water to proper points of discharge. The system is designed to have the finish floor slope to the floor drain and the piping sloped at 1/8 inch per foot permitting a 4-inch diameter pipe to have a flow rate of 100 gpm at 2.4 fps and a 6-inch diameter pipe to have a flow rate of 300 gpm at 3.0 fps. Curbs have been provided around pieces of equipment which have oil reservoirs or where oil is stored to minimize the effect of an oil leak or spill.

Effluents from the floor drain system are discharged through oil separators, and the separated oil flows to fixed or portable oil storage tanks. Tanks are sized to hold the largest probable quantity of oil anticipated for storage.

The drainage system from the turbine oil reservoir room, the dirty and clean oil room (radwaste building), and the seal oil unit (turbine building) are discharged to exterior oil separators.

Drainage, which is potentially radioactive, discharges to the liquid radwaste system where it is analyzed and processed.

3.1.2.2.12 Ventilation Fire Dampers Where ducts penetrate fire barriers, fire damper sleeve assemblies are provided to maintain the fire barrier's integrity. A sleeve assembly is composed of a sheet metal sleeve with perimeter angles enclosing a fire damper. The perimeter angles are placed flush with the fire barrier and protect the opening provided for expansion between the fire damper sleeve assembly and the wall opening. The enclosed fire damper has a rating of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> which is greater than or equal to the fire barrier for both vertical and horizontal installations. The fire dampers are automatic; once closed they can only be opened manually. Deviations from the installation of fire dampers in fire barriers are identified and justified in the Safe Shutdown Analysis.

3.1.2.3 Electrical Cable Trays, Conduits, Panels, and Fire Stops Steel cable trays are provided throughout the station. Generally the cable trays have solid bottoms and are uncovered except for instrumentation cable trays, which have solid covers.

Sometimes open-bottom, ladder-type cable trays are used to facilitate cable entry to equipment such as switchgear and motor control centers. Cable trays are used only for cables.

Conservative energy contribution values (BTU/lb) were selected for the several types of cable insulation. Heat content values (BTU/ft) were then calculated for various cable types based on each cable's non-conductor weight.

APPENDIX E E3.1-5 REV. 11, JANUARY 2005

CPS/USAR The length of each tray-routed cable within each firezone was determined by either 1) the cable tabulation computer program based on distances between cable route points, or 2) tray length within that firezone as shown on cable tray route drawings.

Each tray-routed cable's heat load (BTU) contribution in the event of a fire in a given firezone was then determined by multiplying its length (ft) within that firezone by its heat content (BTU/ft).

Heat loads from all cables within a given firezone were summed to determine the total heat load (BTU) from tray-routed cable, which is an input to the fireload analysis.

Steel conduits are used throughout the station. Generally, the conduits are rigid steel except for lighting, communication, and fire detection cabling, which is in EMT conduit. Flexible metal conduits are used throughout the station, but only in short lengths to connect nonflexible conduit to equipment. Conduits are used only for cables.

The energy contributed during a fire by cables routed in conduits was considered negligible and was not included in determining the fire loading in each fire zone.

3.1.2.4 Ventilation Systems Once-through ventilation systems are provided for the turbine building, containment building, fuel building, radwaste building, machine shop, and general areas of the auxiliary, control, and diesel-generator buildings. These systems are non-safety-related except for isolation functions on the containment building and fuel building systems. These systems provide conditioned air to their respective buildings to obtain a minimum air change requirement, maintain the air flow from radioactively clean areas to areas of progressively greater radioactive contamination, and assist in heat removal. Air from potentially radioactive areas is exhausted through the common station HVAC vent where it is monitored for radiation.

The safety-related diesel-generator ventilation system, which operates when the diesel generator operates, is a once-through system which provides air for the diesel-generator, day tank, and oil tank rooms. The supply air is kept within design temperatures by mixing outdoor and return air, and is ducted to the diesel-generator room, then recirculated or exhausted to the outside.

The diesel-generator makeup system, which operates during normal plant conditions, is also a once-through system providing air to the diesel-generator, day tank, and oil tank rooms. The supply air is conditioned by heating and cooling coils, and is ducted to the diesel-generator room and then staged to the day tank and oil tank rooms and then exhausted.

The diesel-generator ventilation system also contains exhaust fans, which exhaust air from the day tank and oil tank rooms. These fans run continuously.

The diesel-generator ventilation system (including the exhaust fans) is safety-related, and a separate system is provided for each divisional diesel. The diesel-generator makeup system is non-safety-related, and one system is provided for three diesel generator rooms.

Room ventilation fans are stopped, and appropriate isolation dampers are closed whenever a CO2 fire protection system is actuated in the diesel-generator rooms. The room ventilation system can be manually restarted only after the CO2 system is reset.

APPENDIX E E3.1-6 REV. 11, JANUARY 2005

CPS/USAR Recirculation type systems are provided for the ECCS pump rooms, shutdown service water pump rooms and switchgear rooms. These systems are safety-related. A separate HVAC system is provided for each divisional equipment room associated with the areas. The recirculation systems provide heat removal while a small quantity of fresh air is purged through each equipment room for ventilation.

The control room HVAC system provides redundant safety-related cooling and ventilation to the control room and associated support facilities. The system normally operates in a recirculation mode with outdoor air introduced. The purge mode of the system can be manually activated by handswitch on the main control board to provide 100% outdoor air and exhaust 100% room air for control of smoke and combustible products. Additionally, ionization detectors in the return air and minimum outside air intake ducts automatically align the control room HVAC system to preclude significant entry of smoke from inside or outside the plant, by putting into service the control room HVAC recirculation air filter packages (See USAR Section 9.4.1.4 for smoke mode testing description).

The laboratory area of the control building is ventilated by a conventional HVAC system using a mixture of outdoor and return air. Isolation dampers are provided for each exhaust hood to permit laboratory personnel to stop air flow through the hood if a fire develops in the hood working area.

Fire dampers are discussed in Subsection 3.1.2.2.12.

Heat and smoke vents are provided in the turbine building roof. These vents will automatically open in case of a fire by melting of a fusible link. Also, these vents, except Vent #23, can be opened locally by manual releases or by remote manual hand switch operation from the main control room. In addition, large overhead rolling doors may be activated to open from the main control room to provide air inlet area.

3.1.2.5 Fire Detection System The fire detection system for the station consists of a low-voltage, microprocessor-based Pyrotronics XL-3 panels (1H13-P841 in the Main Control Room and 1FP43J in the Auxiliary Electrical Equipment Room) and terminal located in the main control room, which is connected to automatic fire detectors, local panels, and service water fire protection system flow switches throughout the station. Additional details on the Fire Detection System are provided in USAR Section 9.5.1.2.2.

3.1.2.6 Fire Protection Water Supply System The fire protection water supply system consists of pumps, underground yard water mains, inside building water mains, and isolation valves. Additional details of the Fire Protection Water Supply System are provided in USAR Section 9.5.1.2.2.3.

3.1.2.7 Water Sprinkler and Hose Standpipe Systems The fire protection water sprinkler systems and hose standpipes have branch connections to the main loop. Additional details on the Water Sprinkler and Hose Standpipe Systems are provided in USAR Section 9.5.1.2.2.4.

APPENDIX E E3.1-7 REV. 17, OCTOBER 2015

CPS/USAR 3.1.2.8 Halon Suppression Systems Halon suppression systems are total flooding and local application type systems. A sufficient quantity of Halon will be automatically discharged into the enclosure to provide a uniform fire-extinguishing concentration of agent. The Halon agent is stored outside of the protected zone, but may be stored inside the fire area. Additional details on the Halon Suppression Systems are provided in USAR Section 9.5.1.2.2.5.

3.1.2.9 Carbon Dioxide Suppression System Carbon dioxide suppression systems are provided for the diesel-generator set rooms, and the main turbine-generator exciter bearing housings. These systems are automatic initiation, low-pressure type systems. Additional details on the Carbon Dioxide Suppression System are provided in USAR Section 9.5.1.2.2.6.

3.1.2.10 Portable Extinguishers UL listed/FM approved portable extinguishers of appropriate classification are utilized in the Clinton Power Station. General placement of the extinguishers is indicated on the fire hazards analysis drawings included with this report. The extinguishers are located based on the fire hazards in the area. Extinguisher location provides easy accessibility near paths of travel, entrances, and exits, as well as high visibility. Additional details onPortable Extinguishers are provided in USAR Section 9.5.1.2.2.9.

3.1.2.11 Turbine Building Class 1E Cables The turbine building is classified as a non-safety-related, non-seismic building, although it does house some Class 1E electrical cables (in conduits) as well as instrumentation devices. These cables and devices provide inputs to the solid-state protection system for reactor trip or perform functions initiated by the protection system. The principal function of these devices is to provide anticipatory trip for the reactor based upon secondary system parameters. If these cables and/or devices failed, other parameters not measured in the turbine building would provide the necessary signal to shut down the reactor. Thus, no credit has been taken in the Safe Shutdown Analysis for the parameter measurements taken in the turbine building since the loss of these cables and/or devices will not inhibit safe shutdown of the plant.

On this basis, the turbine building and all equipment and systems in the building are considered nonessential for the safe shutdown of the plant.

APPENDIX E E3.1-8 REV. 14, JANUARY 2011

CPS/USAR AUXILIARY BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing A-1 A-1a General Access Area (North) - E3.2-1 FP-2a FP-2b 2 elevation 707'-6" A-1b General Access Area (North) - E3.2-2 FP-3a FP-3b 3 elevation 737'-0" A-1c RP Issue Room - elevation 737'-0" E3.2-3 FP-3a FP-3b -

A-1d RP Storage Room - elevation 737'-0" E3.2-3 FP-3a FP-3b -

A-1e General Access Area (West) - E3.2-4 FP-3a FP-3b -

elevation 737'-0" A-2 A-2a RCIC Pump Room - elevation 707'- E3.2-5 FP-2a FP-2b -

6" A-2b RHR A Equipment Room - E3.2-6 FP-2a FP-2b -

elevations 707'-6", 712'-0", 737'-0", FP-3a FP-3b -

762'-0", 786'-6" FP-4a FP-4b -

FP-5a FP-5b -

A-2c LPCS Pump Room - elevations 707'- E3.2-7 FP-2a FP-2b -

6", 712'-0" A-2d Personnel Hatch Area - elevation E3.2-8 FP-3a FP-3b 3 737'-0" A-2e MSIV Leakage Control Room - E3.2-9 FP-3a FP-3b -

elevation 737'-0" A-2f Main Steam and Pipe Tunnel - E3.2-10 FP-3a FP-3b -

elevations 727'-0", 755'-0" FP-4a FP-4b -

A-2g Reactor Water Cleanup Pump A E3.2-11 FP-3a FP-3b -

Room - elevation 737'-0" A-2h Reactor Water Cleanup Pump B E3.2-12 FP-3a FP-3b Room - elevation 737'-0" A-2i Reactor Water Cleanup Pump C E3.2-13 FP-3a FP-3b -

Room - elevation 737'-0" A-2j Radwaste Pipe Tunnel - elevation E3.2-13 FP-3a FP-3b -

750'-6" APPENDIX E E3.2-i REV. 18, OCTOBER 2016

CPS/USAR AUXILIARY BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing A-2k Nonsafety Switchgear Room (East) - E3.2-14 FP-4a FP-4b 4 elevation 762'-0" A-2m Containment Electrical Penetration E3.2-15 FP-4a FP-4b 4 (East) area - elevation 762'-0" A-2n Division 1 Switchgear Room - E3.2-16 FP-5a FP-5b 5 elevation 781'-0" A-2o Containment Electrical Penetration E3.2-17 FP-5a FP-5b 5 (East) area - elevation 781'-0" A-3 A-3a RHR B Equipment Room - E3.2-18 FP-2a FP-2b -

elevations 707'-6", 737'-0", 762'-0", FP-3a FP-3b -

788'-6" FP-4a FP-4b -

FP-5a FP-5b -

A-3b RHR C Pump Room - elevations E3.2-19 FP-2a FP-2b -

707'-6" A-3c Floor Drains and Hallway - E3.2-20 FP-2a FP-2b -

elevations 712'-0" A-3d Nonsafety Switchgear Room (West) E3.2-21 FP-4a FP-4b 4

- elevation 762'-0" A-3e Containment Electrical penetration E3.2-22 FP-4a FP-4b 4 (West) area - elevation 762'-0" A-3f Division 2 Switchgear Room - E3.2-23 FP-5a FP-5b 5 elevation 781'-0" A-3g Containment Electrical penetration E3.2-24 FP-5a FP-5b 5 area (West) - elevation 781'-0" A-4 - Division 1 Battery Room - elevation E3.2-25 FP-5a FP-5b -

781'-0" A-5 - Division 2 Battery Room - elevation E3.2-26 FP-5a FP-5b -

781'-0" A-6 - General Access Area (North) - E3.2-26 FP2a FP2b 2 elevation 707-6 APPENDIX E E3.2-ii REV. 18, OCTOBER 2016

CPS/USAR 3.2 AUXILIARY BUILDING 3.2.1 Fire Area A-1 3.2.1.1 Fire Zone A-1a; Elevation 707- 6 General Access Area (North)

Description The zone consists of a general access area in the basement of the auxiliary building with a floor area of 2112 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. Safety-related cable trays are shown on cable tray Figure 2.

The floor is 9-foot 8-inch concrete on grade with five 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated. The walls are 18-inch minimum concrete or 19-5/8-inch minimum solid concrete block. The walls are 3-hour fire rated. The ceiling is 16-inch minimum concrete with areas of removable concrete slabs and an open stairwell. The ceiling is not fire rated. There are three stair systems in this zone: one 1.9-hour rated enclosed stair up to elevation 737 feet 0 inch, one open stair up to elevation 737 feet 0 inch, and one open ladder up to elevation 715 feet 0 inch to the turbine building.

Conditioned ventilation air is supplied to this zone through the auxiliary building HVAC supply system ductwork. The supplied air is exhausted directly to the auxiliary building HVAC exhaust ductwork. Area coolers in this zone recirculate air within this zone.

Safety-Related Equipment Residual heat removal (RHR) pumps 1B & 1C vent panels, backup air supply bottles for ADS, reactor core injection cooling (RCIC) room vent panel, and Division 2 cable trays.

Combustible Materials The fire zone contains the following types of combustible materials:

Lubricants Cable Insulation HVAC Material Plastic and Cloth Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system and an automatic wet pipe sprinkler system in this zone. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.2-1 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.1 of the Safe Shutdown Analysis.

3.2.1.2 Fire Zone A-1b; Elevation 737- 0 General Access Area (North)

Description The zone consists of a general access area in the auxiliary building at elevation 737 feet 0 inch.

The floor area is 5650 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. Safety-related cable trays are shown on cable tray Figure 3.

The floor is 14-inch minimum concrete with fifteen 4-inch floor drains, piped to a tank in Zone A-3c, removable concrete and slabs, and an open stairwell. The floor above Zones A-2b, A-2c, A-3a, and A-3b at elevation 707 feet 6 inches, is 3-hour fire rated, the remainder of the floor is not fire rated. The walls are 36-inch minimum reinforced concrete, 11-5/8-inch hollow concrete block, or uninsulated metal siding. The zone boundary walls are all 3-hour rated, except the walls adjacent to Zones A-1c, A-1d, A-1e, and A-2d. The ceiling is 17-inch minimum concrete.

The ceiling is 3-hour rated. There are four stair systems in this zone: one 1.9-hour rated enclosed stair down to elevation 707 feet 6 inches, two 3-hour rated enclosed stairs up to elevation 762 feet 0 inch, and one open stair down to elevation 707 feet 0 inch.

Conditioned ventilation air is supplied to this zone through the auxiliary building HVAC supply system ductwork. The supplied air is exhausted directly to the auxiliary building HVAC exhaust ductwork. Area coolers in this zone recirculate air within the zone.

Safety-Related Equipment Division 1 and 2 panels and instruments and Division 1 and 2 cable trays are located in the zone.

Combustible Materials Lubricants HVAC Material Plastic, Rubber, Cloth, Wood and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. An automatic wet pipe sprinkler system is provided to protect a portion of the corridor. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.2-2 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.1 of the Safe Shutdown Analysis.

3.2.1.3 Fire Zone A-1c; Elevation 737'- 0 RP Issue Room Description The zone consists of a health physics instrument storage room. The floor area is 130 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete. The zone contains no floor drains. The floor is not fire rated. The walls are 36-inch minimum concrete or 11-5/8-inch hollow concrete block. The north and west walls are 3-hour fire rated. The south wall is 1.9-hour fire rated. The remaining walls are not rated. The ceiling is 6-inch minimum concrete and is not fire rated.

Conditioned ventilation air is supplied to the general area on this elevation via the auxiliary building HVAC system supply ductwork. Air is then staged ductless through a backdraft damper to this fire zone and exhausted through the auxiliary building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials Cloth, Paper, Plastic, Wood and Rubber Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.1 of the Safe Shutdown Analysis.

3.2.1.4 Fire Zone A-1d; Elevation 737- 0 RP Storage Room Description The zone consists of a protective clothing storage room. The floor area is 142 ft 2.

APPENDIX E E3.2-3 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete and not fire rated. The zone contains no floor drains.

The walls are 36-inch minimum concrete or 11-5/8-inch hollow concrete block. The north wall is 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 6-inch minimum concrete and is not fire rated.

Conditioned ventilation air is supplied to the general area on this elevation via the auxiliary building HVAC system supply ductwork. Air is then staged ductless through a backdraft damper to this fire zone and exhausted through the auxiliary building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials Cloth, Rubber, Wood, Paper and Plastic Fire Load The fire load for the fire zone is high.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.1 of the Safe Shutdown Analysis.

3.2.1.5 Fire Zone A-1e; Elevation 737- 0 General Access Area (West)

Description The zone consists of a general access area. The floor area is 1768 ft2. A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. Safety-related cable trays are located in this fire zone as sshown on cable tray Figure 3.

The floor is 14-inch minimum concrete with two 4-inch floor drains. The floor is 3-hour fire rated except for the 2-inch gap between the Containment and Auxiliary Buildings. The walls are 36-inch minimum concrete, 11-5/8-inch hollow concrete block, or uninsulated metal siding. The walls are 3-hour fire rated except the wall adjacent to Zone A-1b which is not fire rated. The ceiling is 14-inch minimum concrete and is 3-hour fire rated, except for the 2-inch gap between the containment and auxiliary buildings.

APPENDIX E E3.2-4 REV. 11, JANUARY 2005

CPS/USAR This zone has a small quantity of air movement due to air induced from the fuel building through the standby gas treatment system and being exhausted from the ECCS pump rooms on elevation 707 feet 6 inches.

Safety-Related Equipment Division 1 and 2 valves are located in this zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Rubber, Cloth, Paper and Wood Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.1 of the Safe Shutdown Analysis.

3.2.2 Fire Area A-2 3.2.2.1 Fire Zone A-2a; Elevation 707 - 6 RCIC Pump Room Description The zone consists of the reactor core injection cooling (RCIC) pump room. The floor area is 1116 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch concrete with four 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated. The walls are 12-inch minimum concrete or 11-5/8-inch minimum solid concrete block. The north, west, and containment walls are 3-hour fire rated.

The remaining walls are not fire rated. The ceiling is 36-inch minimum concrete. The ceiling is not fire rated.

This zone has a safety-related fan-coil cooler, supplied from the Division 1 power source, that recirculates air for room cooling. A small quantity of air from the fuel building is inducted into this room by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

APPENDIX E E3.2-5 REV. 11, JANUARY 2005

CPS/USAR Safety-Related Equipment The RCIC water leg pump, RCIC pump, motor, and turbine, fan-coil cooler, Division 1 and 2 instruments, Division 1 and 2 valves, turbine stop valve gland seal compressor motor, and RCIC suction strainer are located in this zone.

Combustible Materials Lubricants HVAC Material Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers (in an adjacent fire zone) and hose stations (in the zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.2 Fire Zone A-2b; Elevation 707 - 6, 712 - 0, 737 - 0, 762 - 0, and 786 - 6 RHR A Equipment Room Description The zone consists of the Residual Heat Removal (RHR) Pump A and Heat Exchanger A rooms.

The Fire Zone covers multiple elevations. However, since the zone is open above 707' - 6",

only this floor area, 1484 ft2 is used for evaluation.

A plan view of this fire zone is shown in Figures FP-2a through FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-2b through FP-5b. No safety-related cable trays are located in this fire zone.

At elevation 707' - 6", the floor is 9-foot 8-inch minimum concrete on grade with four 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated.

Description At elevation 786' - 6", the floor is 1-1/2-inch steel grating supported by steel beams and is open to elevations 737' - 0". The elevation floor contains no floor drains and is not fire rated. The ceiling at elevation 801 feet 9 inches is 36-inch minimum concrete and is not rated.

At elevation 737' - 0" the floor and ceiling are 1-1/2-inch steel grating supported by steel beams.

The elevation contains no floor drains. The floor is not fire rated.

APPENDIX E E3.2-6 REV. 11, JANUARY 2005

CPS/USAR The walls are 32-inch minimum concrete or 39-5/8-inch solid concrete block. The containment wall and the walls adjacent to Zone A-1a are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 32-inch minimum concrete with areas of removable concrete slabs and steel grating. The ceiling east of Column Row 117 is 3-hour fire rated. The remainder of the ceiling is not fire rated.

The zone has two safety-related fan-coil coolers, supplied from the Division 1 power source, that recirculate air for room cooling. A small quantity of air from the fuel building is induced into this room by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment The RHR pump A, RHR heat exchanger 1A, fan-coil coolers, Division 1 and 2 instruments, and Division 1 and 2 valves are located in the zone.

Combustible Materials Lubricants HVAC Material Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone at 707' - 6" elevation. Portable fire extinguishers (in an adjacent fire zone) and hose stations (in the zone at elevation 707 feet 6 inches and in an adjacent zone at elevation 737 feet 0 inch) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.3 Fire Zone A-2c; Elevation 707 - 6 and 712 - 0 LPCS Pump Room Description The zone consists of a low-pressure core spray (LPCS) pump room. The floor area is 2072 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete with five 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated. The walls are 18-inch minimum concrete or APPENDIX E E3.2-7 REV. 11, JANUARY 2005

CPS/USAR 19-5/8-inch minimum solid concrete block. The south, east, north, and containment walls are 3-hour fire rated. The remaining walls are not fire rated. The north wall is penetrated by a 1 1/2" unsealed drain line which does not affect the barrier's 3-hour fire rating. The ceiling is 14-inch minimum concrete with areas of removable concrete slabs. The portion of the ceiling which separates this fire zone from Fire Zone A-1b is 3-hour fire rated.

The zone has a safety-related fan-coil cooler, supplied from the Division 1 power source, that recirculates air for room cooling. A small quantity of air from the fuel building is induced into this room by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment The LPCS pump, LPCS water leg pump, fan-oil cooler, Division 1 and 2 valves, and Division 1 instruments are located in the zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Cloth, Paper, Plastic and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.4 Fire Zone A-2d; Elevation 737 - 0 Personnel Hatch Area Description The zone consists of a general hallway and containment building personnel hatch area. The floor area is 700 ft2. A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b.

The floor is 14-inch minimum concrete with two 4-inch floor drains. The floor is not fire rated.

The walls are 36-inch minimum concrete, 48-inch removable solid concrete block, or uninsulated metal siding. The east, south, and containment walls are 3-hour fire rated. The north wall is not fire rated. The ceiling is 36-inch minimum concrete and is not fire rated.

APPENDIX E E3.2-8 REV. 14, JANUARY 2011

CPS/USAR This zone contains no HVAC system.

Safety-Related Equipment Division 1 cable tray and Division 1 instruments are located in this zone.

Combustible Materials Lubricants Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (in an adjacent fire zone) and hose stations (in the zone) are provided for manual firefighting as shown on the referenced drawings.

Design Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.5 Fire Zone A-2e; Elevation 737 - 0 MSIV Leakage Control Room Description The zone consists of the main steam isolation valve-LCS rooms. The floor area is 767 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 36-inch minimum concrete with three 4-inch floor drains. The floor is not fire rated.

The walls are 18-inch minimum concrete. The west wall and the containment building wall are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 60-inch minimum concrete and is not fire rated.

This zone contains safety related fan coil coolers that recirculate air for room cooling.

Safety-Related Equipment Division 1 and 2 valves, exhaust blowers B and F, heaters A, E, J, and N, and Division 1 and 2 MSIV inboard and outboard room supply fans are located in this zone.

Combustible Materials Lubricants Rubber and Cloth APPENDIX E E3.2-9 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.6 Fire Zone A-2f; Elevations 727 - 0 and 755 - 0 Main Steam and Pipe Tunnel Description The zone consists of the main steam tunnel and pipe tunnel. The zone crosses elevations 727'

- 0" through 786' - 6"; the 727' - 0" and 755' - 0" elevations are combined to obtain the floor area of 1918 ft2 used in analysis.

A plan view of this fire zone is shown on Figures FP-3a and FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-3b and FP-4b. No safety-related cable trays are located in this fire zone.

At elevation 727' - 0", the floor is 36-inch minimum concrete with no floor drains. The walls are 48-inch minimum concrete. The north and west walls are 3-hour fire rated; the remaining walls and floor are not fire rated.

At elevation 755' - 0", the floor is 60-inch minimum concrete and is 3-hour fire rated only over Zone A-1b. The remaining floor is not fire rated. There are four 4-inch floor drains and there is an opening to Zone A-2f at elevation 727 feet 0 inch. The walls are 36-inch minimum concrete or uninsulated metal siding. The containment building wall and west wall are 3-hour fire rated.

The remaining walls, including the uninsulated metal siding wall adjacent to the turbine building, are not fire rated. The ceiling is 56-inch minimum concrete and is not fire rated. The ceiling is 3-hour fire rated at elevation 790 feet 0 inch. The rest of the ceiling is open to the auxiliary building roof.

No ventilation air is supplied to this zone. The zone is maintained under negative pressure via the SGTS system, exhausting from RCIC room and 2-inch gaps at the containment wall between the RHR rooms and steam tunnel. Makeup air is provided via the containment gas control boundary system from the fuel building.

Safety-Related Equipment The main steam isolation valves, Division 1 and 2 instruments, Division 1 and 2 valves, feedwater check valve accumulator tanks A and B, and the 39-gallon accumulator tank are in this zone.

APPENDIX E E3.2-10 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Hose stations are provided in a nearby fire zone of the Turbine Building for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.7 Fire Zone A-2g; Elevation 737 - 0 Reactor Water Cleanup Pump A Room Description The zone consists of the reactor water cleanup pump A room. The floor area is 156 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete with one 4-inch floor drain. The floor is not fire rated.

The walls are 18-inch minimum concrete. The containment building wall and the walls adjacent to Zone A-1b are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 42-inch minimum concrete and is not fire rated.

These rooms have non-safety-related fan-coil coolers which recirculate air for room cooling. A small quantity of air from the fuel building HVAC system is supplied to the room. Air is exhausted from the room through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment Division 1 and 2 instruments are located in the zone.

Combustible Materials Lubricants Cloth and Rubber Fire Load The fire load for the fire zone is low.

APPENDIX E E3.2-11 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.8 Fire Zone A-2h; Elevation 737 - 0 Reactor Water Cleanup Pump B Room Description The zone consists of reactor water cleanup pump B room. The floor area is 140 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete with one 4-inch drain. The walls are 18-inch minimum concrete. The walls adjacent to Zone A-1b are 3-hour fire rated. The ceiling is 42-inch minimum concrete. The remaining walls, floor, and ceiling are not fire rated.

A small quantity of air from the fuel building HVAC system is supplied to the room. Air is exhausted from the room through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment Division 1 and 2 instruments are located in the zone.

Combustible Materials Lubricants Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

APPENDIX E E3.2-12 REV. 11, JANUARY 2005

CPS/USAR 3.2.2.9 Fire Zone A-2i; Elevation 737 - 0 Reactor Water Cleanup Pump C Room Description The zone consists of the reactor water cleanup pump C room. The floor area is 132 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete with one 4-inch floor drain. The floor is not rated. The walls adjacent to the containment and Fire Zone A-1b are 3-hour fire rated. The remaining walls are 18-inch minimum concrete and are not fire rated. The ceiling is 42-inch minimum concrete and is not rated.

The zone has a non-safety-related fan-coil cooler which recirculates air for room cooling. A small quantity of air from the fuel building HVAC system is supplied to the room. Air is exhausted from the room through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment Division 1 and 2 instruments are located in the zone.

Combustible Materials Lubricants HVAC Material Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.10 Fire Zone A-2j; Elevation 750 - 6 Radwaste Pipe Tunnel Description This zone is part of radwaste pipe tunnel and is at an intermediate level of 750 feet 6 inches.

The floor area is 1617 ft2.

APPENDIX E E3.2-13 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 36-inch minimum reinforced concrete and is 3-hour fire rated above zone A-1b. The walls are 36-inch minimum reinforced concrete. All walls are 3-hour fire rated, except the tunnel to Zone A-2f. The ceiling is 36-inch minimum concrete and is not fire rated.

Safety-Related Equipment Safety-related cables, instruments, and valves are located in this zone.

Combustible Materials HVAC Material Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection A hose station is provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 oof the Safe Shutdown Analysis.

3.2.2.11 Fire Zone A-2k; Elevation 762 - 0 Nonsafety Switchgear Room (East)

Description The zone consists of a non-safety-related switchgear area. The floor area is 4306 ft2.

A plan view of this fire zone is shown on Figure FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-4b. Safety-related cable trays are shown on cable tray Figure 4.

The floor is 17-inch minimum concrete with eight 4-inch floor drains, and an open stairwell. The floor is 3-hour fire rated over Fire Zone A-1b. The walls are 24-inch minimum concrete or uninsulated metal siding. The walls are 3-hour fire rated except the walls adjacent to Zones A-b and A-f and the uninsulated metal siding walls adjacent to Zone A-2m which are not fire rated.

The ceiling is 14-inch minimum concrete and is 3-hour fire rated adjacent to Fire Zones A-3f and A-4. The remaining ceiling is not rated. One stair system passes through this zone: an open stair up to elevation 781 feet 0 inch and enclosed down to elevation 737 feet 0 inch. The stair enclosure down to elevation 737 feet 0 inch is 3-hour fire rated.

This zone is served by two interconnected HVAC systems: one is non-safety related on elevation 762 feet 0 inch and the second is located on elevation 781 feet 0 inch. Either system can serve both areas simultaneously. During normal operation, the auxiliary building HVAC APPENDIX E E3.2-14 REV. 11, JANUARY 2005

CPS/USAR supply system furnishes conditioned air to this zone and it is exhausted by the auxiliary building HVAC exhaust system, as well as the Division 1 battery room exhaust fan.

Safety-Related Equipment Source range monitor, intermediate range monitor drive control relay panel, electrical penetrations, and Division 1 cable trays are located in the zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.12 Fire Zone A-2m; Elevation 762 - 0 Electrical Penetrations (East)

Description This zone is a containment electrical penetration area. The floor area is 452 ft2.

A plan view of this fire zone is shown on Figure FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-4b. Safety-related cable trays are located in this fire zone as shown on cable tray Figure 4.

The floor is 36-inch minimum concrete with two 4-inch floor drains. The floor is not fire rated.

The walls are 24-inch minimum concrete or uninsulated metal siding. The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-2k which are not fire rated.

The ceiling is 14-inch minimum concrete and is not fire rated.

Air infiltrates this zone from the containment gas control boundary extension and the 2-inch gap between the auxiliary building and the containment building at the floor level. Air exfiltrates this zone through the 2-inch gap between the auxiliary building and the containment building at the floor level.

Safety-Related Equipment Containment electrical penetrations, Division 1 instruments, and Division 1 valves are located in the zone.

APPENDIX E E3.2-15 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants Cable Insulation Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.13 Fire Zone A-2n; Elevation 781 - 0 Division 1 Switchgear Room Description The zone consists of the auxiliary building Division 1 switchgear area. The floor area is 3369 ft2.

A plan view of this fire zone is shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. Safety-related cable trays are shown on cable tray Figure 5.

The floor is 14-inch minimum concrete with eight 4-inch floor drains and an open stairwell. The floor is not fire rated. The walls are 24-inch minimum concrete, 11-5/8-inch hollow concrete block, or uninsulated metal siding. The north and east walls are 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated. The remaining walls are not fire rated. The ceiling is 18-inch minimum concrete and is not fire rated. There is one open stair system in this zone down to elevation 762 feet 0 inch.

This zone is served by two interconnected HVAC systems: one is non-safety-related (elevation 762 feet 0 inch) and the second is a safety-related system (elevation 781 feet 0 inch). Either system can serve both areas simultaneously. During normal operation, the auxiliary building HVAC supply system furnishes conditioned air to this zone and it is exhausted by the auxiliary building HVAC exhaust system, as well as the Division 1 battery room exhaust fan.

Safety-Related Equipment Division 1, 4.1-kV switchgear, 480-volt unit substation, battery charger, hydrogen igniter cabinet, motor control centers, remote shutdown panel, Division 1 and 3 cable trays, electrical penetrations, switchgear heat removal system, fan, and damper are located in the zone.

APPENDIX E E3.2-16 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants HVAC Material Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is high.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.2.14 Fire Zone A-2o; Elevation 781 - 0 Electrical Penetrations (East)

Description This zone is a containment electrical penetration area. The floor area is 460 ft2.

A plan view of this fire zone is shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. Safety-related cable trays are shown on cable tray Figure 5.

The floor is 14-inch minimum concrete with two 4-inch floor drains. The floor is not fire rated.

The walls are 24-inch minimum concrete, or uninsulated metal siding. The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-2n which are not fire rated.

The ceiling is 18-inch minimum concrete and is not fire rated.

Air infiltrates this zone from the containment gas control boundary and the containment gas control boundary extension, and exfiltrates through the 2-inch gap between the auxiliary building and the containment building at the floor level.

Safety-Related Equipment Containment electrical penetrations and Division 1 instruments and drywell instrument panel are located in the zone.

Combustible Materials Lubricants Cable Insulation Rubber and Cloth Fire Load The fire load for the fire zone is low.

APPENDIX E E3.2-17 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawing.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.2 of the Safe Shutdown Analysis.

3.2.3 Fire Area A-3 3.2.3.1 Fire Zone A-3a; Elevation 707 - 6, 737 - 0, 762 - 0, and 788 - 6 RHR B Equipment Room Description The zone consists of the Residual Heat Removal (RHR) Pump B and Heat Exchanger B rooms.

The fire zone covers multiple elevations. However, since the zone is open above 707' - 6", only this floor area, 1564 ft2, is used for evaluation.

A plan view of this fire zone is shown on Figures FP-2a through FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-2b through FP-5b. No safety-related cable trays are located in this fire zone.

At elevation 707' - 6" the floor is 9-foot 8-inch concrete with four 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated.

At elevation 737' - 0" the floor and ceiling are 1-1/2-inch steel grating supported by steel beams.

The elevation contains no floor drains. The floor is not fire rated.

At elevation 788' - 6" the floor is 1-1/2-inch steel grating supported by steel beams and is open to elevations 707 feet 0 inch, 737 feet 0 inch, and 781 feet 0 inch. The zone contains no floor drains. The floor is not fire rated. The ceiling at elevation 801 feet 9 inches is 36-inch minimum concrete and is not fire rated.

The walls are 32-inch minimum concrete or 39-5/8-inch minimum solid concrete block. The north, east, and containment building walls and the portion of the west wall adjacent to Zone A-1a are 3-hour rated. The remaining walls are not fire rated. The ceiling is 32-inch minimum concrete with areas of removable concrete slabs and steel grating. The ceiling west of Column Row 107 is 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated, the remainder of the ceiling is not fire rated.

This zone has two safety-related fan-coil coolers, supplied from the Division 2 power source, that recirculate air for room cooling. A small quantity of air from the fuel building is induced into this room by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system. Ducts penetrating fire walls are provided with 3-hour fire rated dampers.

APPENDIX E E3.2-18 REV. 11, JANUARY 2005

CPS/USAR Safety-Related Equipment The RHR pump 1B, RHR heat exchanger B, RHR heat exchanger B room fan-coil unit, Division 1 and Division 2 instrument panel and valves are located in the zone.

Combustible Materials Lubricants HVAC Material Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone at elevation 707'-6". Portable fire extinguishers (in an adjacent fire zone) and hose stations (in the zone at elevation 707'-6") are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.2 Fire Zone A-3b; Elevation 707 - 6 RHR C Pump Room Description The zone consists of the Residual Heat Removal Pump C room with floor area of 1221 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch concrete with two 4-inch floor drains routed to a sump located within the zone. The floor is not fire rated. The walls are 18-inch minimum concrete or 19-5/8-inch solid concrete block. The north wall and containment building wall are 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated. The west wall above elevation 722 feet 0 inch is 3-hour rated. The remaining walls are not fire rated.

The ceiling is 16-inch minimum concrete with areas of removable concrete slabs. The ceiling is 3-hour fire rated, except for the 2-inch gap between the Containment and Auxiliary buildings.

This zone has a safety-related fan-coil cooler supplied from the Division 3 power source, that recirculates air for room cooling. A small quantity of air from the fuel building is induced into this room by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment The residual heat removal (RHR) pump 1C, RHR water leg pump, RHR pump C room supply fan, Division 2 valves, and Division 2 instruments are located in the zone.

APPENDIX E E3.2-19 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants HVAC Material Plastic and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers (in adjacent fire zones) and hose stations (in the zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.3 Fire Zone A-3c; Elevation 712 - 0 Floor Drains and Hallway Description The zone consists of a general hallway and floor drain pump rooms. The floor area is 644 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete with four 4-inch floor drains routed to the sump located within the zone. The floor is not fire rated. The walls are 30-inch minimum reinforced concrete. The south and containment walls are 3-hour fire rated. The west wall above elevation 722 feet 0 inch is 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete and is 3-hour fire rated, except for the 2-inch gap between the Containment and Auxiliary Buildings.

This zone has a small quantity of air induced from the fuel building by way of the containment gas control boundary. Air is exhausted from the zone through the standby gas treatment system piping which has a normal exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment Division 2 valves are located in the zone.

Combustible Materials Lubricants HVAC Material Plastic, Rubber, Cloth and Paper APPENDIX E E3.2-20 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (in the zone) and hose stations (outside the zone door) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.4 Fire Zone A-3d; Elevation 762 - 0 Nonsafety Switchgear (West)

Description This zone consists of a non-safety-related switchgear area. The floor area is 4296 ft2.

A plan view of this fire zone is shown on Figure FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-4b. Safety-related cable trays are shown on cable tray Figure 4.

The floor is 14-inch minimum concrete with seven 4-inch floor drains and an open stairwell. The floor is 3-hour fire rated. The walls are 24-inch minimum concrete or uninsulated metal siding.

The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-3e and the walls adjacent to Zone A-3a which are not fire rated. The ceiling is 14-inch minimum concrete and is 3-hour fire rated below zone A-5. One stair system passes through this zone:

an open stair up to elevation 781 feet 0 inch and enclosed down to elevation 737 feet 0 inch.

The stair enclosure down to elevation 737 feet 0 inch is 3-hour fire rated.

This zone is served by two interconnected HVAC systems: one is non-safety-related on elevation 762 feet 0 inch and the second is a Division 2 system located on elevation 781 feet 0 inch. Either system can serve both areas simultaneously. During normal operation, the auxiliary building HVAC supply system furnishes conditioned air to this zone and it is exhausted by the auxiliary building HVAC exhaust system as well as the Division 2 battery room exhaust fan.

Safety-Related Equipment Electrical penetrations and Division 2 cable trays are located in the zone.

Combustible Materials Lubricants HVAC Material Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.2-21 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection There is an ionization fire detection system in this zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.5 Fire Zone A-3e; Elevation 762 - 0 Electrical Penetrations (West)

Description This zone is a containment electrical penetration area. The floor area is 382 ft2.

A plan view of this fire zone is shown on Figure FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-4b. Safety-related cable trays are located in this fire zone as shown on cable tray Figure 4.

The floor is 14-inch minimum concrete with two 4-inch floor drains. The floor is 3-hour fire rated except for the air gap adjacent to the containment. The walls are 24-inch minimum concrete or uninsulated metal siding. The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-3d which are not fire rated. The ceiling is 14-inch minimum concrete and is not fire rated.

Air infiltrates this zone from the containment gas control boundary extension and the 2-inch gap between the auxiliary building and the containment building at the floor level.

Air exfiltrates this zone through the 2-inch gap between the auxiliary building and the containment building at the floor level.

Safety-Related Equipment Containment electrical penetrations and Division 1 and 2 valves are located in the zone.

Combustible Materials Lubricants Cable Insulation Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.2-22 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.6 Fire Zone A-3f; Elevation 781 - 0 Division 2 Switchgear Room Description The zone consists of the auxiliary building Division 2 switchgear area and general access areaand extends above the Division 1 and 2 battery rooms (Areas A-4 and A-5) and above the steam tunnel (Zone A-2f). The floor area is 6170 ft2.

A plan view of this fire zone is shown on Figure FP-5a. Rated barriers, area detection,suppression systems, and major plant equipment are shown on Figure FP-5b. Safety-related cable trays are shown on cable tray Figure 5.

The floor is 12-inch minimum concrete with fourteen 4-inch floor drains and an open stairwell.

The intermediate floor (Elevation 790 feet 0 inch) has two 6-inch floor drains and is 3-hour fire rated above the battery rooms, above the steam tunnel, and above Fire Zone A-2k. The switchgear floor area is not fire rated. The walls are 24-inch minimum concrete, 11-5/8-inch hollow concrete block, or uninsulated metal siding. The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-3g and the east wall adjacent to Zone A-3a which are not fire rated. The ceiling is 18-inch minimum concrete and is 3-hour fire rated.

There is one open stair system in this zone down to elevation 762 feet 0 inch.

This zone is served by two interconnected HVAC systems: one is non-safety-related (elevation 762 feet 0 inch) and the second is safety-related (elevation 781 feet 0 inch). Either system can serve both areas simultaneously. During normal operation, the auxiliary building HVAC supply system furnishes conditioned air to this zone and it is exhausted by the auxiliary building HVAC system, as well as the Division 2 battery room exhaust fan.

Safety-Related Equipment Division 2 4.1-kV switchgear, 480-volt unit substation, hydrogen igniter cabinet, battery charger, instrument panel, motor control centers, switchgear heat removal system, fan, damper, battery room exhaust fans, Division 2 and 4 cable trays, and electrical penetrations are located in the zone.

Combustible Materials Lubricants HVAC Material Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.2-23 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection There is an ionization fire detection system located in the zone. An automatic wet pipe water spray system is installed in accordance with NFPA 15 to provide area protection over the Division 1 and 2 battery rooms and the pipe tunnel (see Section E-E, Figure FP-5a). This system is installed to comply with the requirements of BTP 9.5-1, Appendix A. The system is designed with a density of 0.15 gpm/ft² for 25.5 ft² of tray. The 0.15 gpm/ft² density is based on NFPA requirements for an Ordinary occupancy classification and engineering judgement. The 25.5 ft² area of tray is based on the spray nozzle throw of 8.5 ft. times the 3 ft. wide tray.

Portable fire extinguishers (in the zone) and hose stations (outside the zone access doors) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.3.7 Fire Zone A-3g; Elevation 781 - 0 Electrical Penetrations (West)

Description This zone is a containment electrical penetration area. The floor area is 393 ft2.

A plan view of this fire zone is shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. Safety related cable trays are shown on cable tray Figure 5.

The floor is 14-inch minimum concrete with two 4-inch floor drains. The floor is not fire rated.

The walls are 24-inch minimum concrete or uninsulated metal siding. The walls are 3-hour fire rated except the uninsulated metal siding walls adjacent to Zone A-3f which are not fire rated.

The ceiling is 18-inch minimum concrete and is not fire rated.

Air infiltrates this zone from the containment gas control boundary and the containment gas control boundary extension, and exfiltrates through the 2-inch gap between the auxiliary building and the containment building at the floor level.

Safety-Related Equipment Containment electrical penetrations, Division 2 valves, and drywell sample panel are located in the zone.

Combustible Materials Lubricants Cable Insulation Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection APPENDIX E E3.2-24 REV. 11, JANUARY 2005

CPS/USAR There is an ionization fire detection system located in the zone. Portable fire extinguishers are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.1.3 of the Safe Shutdown Analysis.

3.2.4 Fire Area A-4; Elevation 781 - 0 Division 1 Battery Room Description The area consists of an auxiliary building Division 1 battery room. The floor area is 340 ft2.

A plan view of this fire area is shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. Safety-related cable trays are located in this fire area as shown on cable tray Figure 5.

The floor is 17-inch minimum concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 36-inch minimum concrete or 11-5/8-inch hollow concrete block. All walls are 3-hour fire rated. The ceiling is 18-inch minimum concrete and is 3-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. The air enters from the surrounding areas through a backdraft damper and exhausts through the Division 1 battery room exhaust fans.

The design and construction of the structural boundaries of the area and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment Division 1 125-Vdc batteries are located in the area.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the area. Portable fire extinguishers are provided outside the zone access door for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.1.4 of the Safe Shutdown Analysis.

APPENDIX E E3.2-25 REV. 11, JANUARY 2005

CPS/USAR 3.2.5 Fire Area A-5; Elevation 781 - 0 Division 2 Battery Room Description The area consists of an auxiliary building Division 2 battery room. The floor area is 255 ft2.

A plan view of this fire area if shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. No safety-related cable trays are located in this fire area as shown on cable tray Figure 5.

The floor is 17-inch minimum concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 36-inch minimum concrete or 11-5/8 inch hollow concrete block. All walls are 3-hour fire rated. The ceiling is 18-inch minimum concrete and is 3-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. The air enters from the surrounding area through a backdraft damper and exhausts through the Division 2 battery room exhaust fans.

The design and construction of the structural boundaries of the area and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment Division 2 125-Vdc batteries are located in the area.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the area. Portable fire extinguishers are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.1.5 of the Safe Shutdown Analysis.

3.2.6 Fire Area A-6; Elevation 707 - 6 General Access Area (North)

Description The area consists of a general access area in the basement of the Aixiliary Building with a floor area of 852 ft2.

APPENDIX E E3.2-26 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire area is shown in Figure FP-2a. Rated barriers, fire detectors (ionization smoke detectors), suppression system, and major plant equipment are shown on Figure FP2b.

Safety-related cable trays are shown on cable tray Figure 2.

The floor is 9 foot 8 inch of concrete on grade with one 4-inch floor drain routed to a sump located in fire zone A-1a. The wall common to zone A-2c is penetrated by a 1 1/2 unsealed drain line which does not affect the barriers 3-hour fire rating. The floor is not fire rated. The walls are 18-inch minimum concrete or 19-5/8 inch minimum solid concrete block except the wall common to fire zone A-1a which is an 8 solid concrete block wall. All walls are 3-hour fire rated including the 8 solid concrete block which is built up to the concrete slab located in this area at elevation 726 0. Although the wall which is common to fire zone A-1a has a significant number of penetrations, the penetrations are sealed with approved 3-hour fire seals and the 3-hour rating should not be affected. The ceiling is 16-inch minimum concrete which is not fire rated. In addition, there is a 12 concrete slab at elevation 726 0 which is used as part of the 3-hour fire barrier system between fire zone A-1a and A-6. There are three fire doors in this fire area in the wall common to fire zone A-1a.

Conditioned ventilation air is supplied to this area through the auxiliary building HVAC supply system ductwork. The supplied air is exhausted directly to the auxiliary building HVAC exhaust ductwork. Area coolers in the area recirculate air within this area.

Safety-related Equipment Residual heat removal (RHR) pump 1A vent panel, control panels, Division 1 cable trays, and Division 1 instrumentation are located in this area.

Combustible Materials Cable Insulation HVAC Material Plastic and Cloth Fire Load The fire load for this fire area is moderate.

Fire Detection and Protection There is an ipnization smoke detection system and an automatic wet pipe sprinkler system in this area. However, it should be noted that due to the installation of the 3-hour rated fire wall between fire areas A-6 and A-1a, the sprinkler system is not required as per 10 CFR 50, Appendix R, Section III.G.2.a, and credit for the sprinkler system is not taken. Portable fire extinguishers and hose stations are provided for manual fire fighting as shown on the reference drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.1.6 of the Safe Shutdown Analysis.

APPENDIX E E3.2-27 REV. 11, JANUARY 2005

CPS/USAR CONTAINMENT BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing C-1 - Containment Drywell - elevation E3.3-1 FP-2a FP-2b -

723'-1-3/4" 7370, 755-0, 778-0 C-2 - Containment - elevations 712- E3.3-2 FP-2a FP-2b -

0, 737-0, 755-0, 778-0, E3.3-2 FP-3a FP-3b -

789-1, 803-3, 816-7, 828-3 E3.3-3 FP-4a FP-4b 4 E3.3-4 FP-5a FP-5b 5 E3.3-6 FP-6a FP-6b 5 E3.3-7 FP-6a FP-6b 6 E3.3-8 FP-6a FP-6b -

E3.3-8 FP-7a FP-7b -

APPENDIX E E3.3-i REV. 18, OCTOBER 2016

CPS/USAR 3.3 CONTAINMENT BUILDING 3.3.1 Fire Area C-1; Elevation 723 - 1 3/4 through 778-0 Containment Drywell Description The area consists of the drywell volume of the containment building starting at elevation 723 feet 1-3/4 inches. The floor area at this elevation is 2947 ft2.

A plan view of this fire area is shown on Figures FP-2a and FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-2b and FP-3b.

The floor is 12-foot 8-1/4-inch minimum concrete with five 6-inch and two 4-inch floor drains to a sump located within the area. The floor is not fire rated. The walls are 22-inch minimum concrete and 1-inch steel liner plates. The drywell wall is 3-hour fire rated, the remaining walls are not fire rated. The ceiling is 36-inch minimum concrete and is 3-hour fire rated.

The reactor vessel is located within the area and enclosed by a wall of 68-inch concrete.

The drywell cooling system is non-safety-related and is powered by two independent essential switchgear and standby diesel generators to preclude possible ECCS operation due to cooler shutdown in the event of loss of offsite power. The supplemental drywell cooling system is not powered from divisional sources. The system functions to recirculate and distribute cooling air throughout the drywell. There is an open stairwell, up to elevation 737-0.

Safety-Related Equipment The reactor vessel, reactor assembly, vessel and components, control rod drive, nuclear instrumentation, and Division 1, 2, 3, and 4 valves are located in the area.

Combustible Materials Lubricants Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an infrared fire detection system in this area adjacent to the reactor recirculation motors at elevation 723. A hose station is provided at elevation 737 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.2.1 of the Safe Shutdown Analysis.

APPENDIX E E3.3-1 REV. 11, JANUARY 2005

CPS/USAR 3.3.2 Fire Area C-2 This fire area consists of one fire zone with fire load evaluations performed at eight elevations.

3.3.2.1 Fire Area C-2; Elevation 712 - 0 Containment Description The area consists of the suppression pool area on elevation 712 feet 0 inch and above. The floor area is 7174 ft2.

A plan view of this fire area is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire area.

The floor is 9-foot 8-inch minimum concrete with no floor drains. It is covered by 19 feet of water. The floor is not fire rated. The walls are 36-inch minimum concrete with 1-inch steel liner plate. The walls are 3-hour fire rated. The ceilings are 1-1/2-inch steel grating supported by steel beams. The ceiling is not fire rated.

Safety-Related Equipment The RHR suction strainers A, B, and C, LPCS suction strainer, HPCS suction strainer, SRV discharge devices, containment hatch removal monorail beam, and containment area 1 and 3 personnel hatch shield door are located in this area.

Combustible Materials Lubricants Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection None required.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

3.3.2.2 Fire Area C-2; Elevation 737 - 0 Containment Description This fire area continues from below and is a circular area consisting of 6969 ft2, bounded by the containment wall and drywell wall.

APPENDIX E E3.3-2 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire area is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire area.

The floor is 1-1/2-inch steel grating with open areas to elevation 712 feet 0 inch. The floor is not fire rated. The walls are 36-inch minimum concrete with a steel liner plate. The walls are 3-hour fire rated. The ceiling is 12-inch minimum concrete with open areas and areas covered by steel grating. The ceiling is not fire rated. There are two open stairwells in this area, both up to elevation 762 feet 0 inch. The personnel and equipment hatches are also located in this area.

Safety-Related Equipment Division 1 and 2 valves and Division 1 and 2 hydrogen ignitors are located in this area.

Combustible Materials Lubricants Cable Insulation Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (in an adjacent area) and hose stations (in the area) are provided for manual fire fighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

3.3.2.3 Fire Area C-2, Elevation 755 - 0 Containment Description The fire area continues from lower elevations and consists of the steam and feedwater tunnel between the drywell and containment walls and the circular area between the drywell and containment walls excluding the tunnel. The floor area is 6855 ft2.

A plan view of this fire area is shown on Figure FP-4a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-4b. Safety-related cable trays are shown on cable tray Figure 4.

The floor is 12-inch minimum concrete and 1-1/2-inch steel grating with sixteen 4 inch floor drains. The floor drains are routed to a sump at elevation 737 feet 0 inch. The floor is not fire rated. The walls are 36-inch minimum concrete with steel liner plate. The containment and drywell walls are 3-hour fire rated. The ceiling is 12-inch minimum concrete and is not fire rated APPENDIX E E3.3-3 REV. 11, JANUARY 2005

CPS/USAR This area is served by either the containment HVAC system or the continuous containment purge system and the air recirculating type cubicle coolers served by the containment chilled water system.

The hydraulic control unit (HCU) modules are designed to be fail-safe. Any postulated credible fire in the area will not prevent any unit from performing its design function. Damage as the result of a fire to the electrical or pneumatic portion of any module will result in a control rod insertion.

Safety-Related Equipment Division 1, 2, 3, and 4 cable trays, instrument panels and electrical penetrations, the HCU modules, reactor vessel level and pressure instrument panels A, B, and C, main steam flow instrument panels A and B, recirculating pump A instrument Panel, jet pump instrument panels, SRM/IRM preamplifier panel C, the recirculating system flow control system instrument panel, and Division 2 valves are in the area.

Combustible Materials Lubricants Cable Insulation HVAC Material Paper, Rubber, Cloth and Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Linear thermal detectors are provided in the safety-related cable trays from elevations 755 feet to 803 feet. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

3.3.2.4 Fire Area C-2; Elevation 778 - 0 Containment Description The fire area continues from elevations below, and, at this elevation, consists of the general access and equipment area, the main steam pipe tunnel, and refueling pool. The floor area is 6131 ft2.

A plan view of this fire area is shown on Figure FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-5b. Safety-related cable trays are shown on cable tray Figure 5.

APPENDIX E E3.3-4 REV. 11, JANUARY 2005

CPS/USAR The floor is 12-inch minimum concrete with areas of 1-1/2-inch steel grating supported by steel beams. There are two 3-inch floor drains routed to the equipment drain system, two 4-inch floor drains, and one 8- x 8-inch box drain routed to the floor drain sump at elevation 737 feet 0 inch of the auxiliary building. The floor is not fire rated. The walls are a combination 30-inch minimum reinforced concrete and 40-inch removable solid concrete blocks. The drywell and containment walls are 3-hour fire rated. The ceiling is 30-inch minimum concrete with areas of 1-1/2-inch steel grating supported by steel beams. The ceiling is not fire rated. There are four open stairways in this area: one up to elevation 784 feet 1 inch, one down to elevation 737 feet 0 inch, one up to elevation 828 feet 3 inches, and one up to 828 feet 3 inches and down to elevation 762 feet 0 inch.

This area is served by either the containment HVAC system or the continuous containment purge system and the recirculating type air handling units served by the containment chilled water system.

Air enters the main steam pipe tunnel through backdraft dampers and exits through exhaust ductwork. The cooling capacity can be augmented by recirculating type cubicle coolers or air handling units which are connected to the chilled water system.

Safety-Related Equipment The standby liquid and control storage tank and pumps, Division 1, 2, 3, and 4 electrical penetrations, Division 1, 2, 3, and 4 cable trays, Division 1 and 2 control and instrument panels, and Division 1, 2, and 3 valves are located within this area.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection An infrared detection system is provided for the standby liquid control system pumps. Linear thermal detectors are provided in the safety-related cable trays from elevations 755 feet to 803 feet. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

APPENDIX E E3.3-5 REV. 11, JANUARY 2005

CPS/USAR 3.3.2.5 Fire Area C-2, Elevation 789 - 1 Containment Description This elevation includes the RWCU filter demineralizer vessel rooms, the regenerative and nonregenerative heat exchanger rooms, and area coolers. The floor area at elevation 789 feet 1 inch is 814 ft2.

A plan view of this fire zone is shown on Figure FP-6a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-6b. Safety-related cable trays at this elevation of the fire area are shown on Cable Tray Figure 5.

The floor is 18-inch minimum concrete with 1-1/2-inch steel grating supported by steel beams.

There is one 4-inch floor drain in each RWCU filter demineralizer vessel room and heat exchanger room. The floor is not fire rated. The walls are 12-inch minimum concrete. The containment and drywell walls are 3-hour fire rated and the remaining walls are not fire rated.

The ceiling is 24-inch minimum concrete with areas of 1-1/2 inch steel grating and 1/2-inch checkered plate and is not fire rated.

The entire area also contains one open stairway down to elevation 778 feet 0 inch.

This area is served either by the containment HVAC system or by the continuous containment purge system and the recirculating type air-handling units served by containment chilled water system.

Air is not normally exhausted from the dome area. However, a manual damper connecting to the dome area ductwork can be opened when required to exhaust air from this area.

Safety-Related Equipment The safety-related equipment located within the fire area are Division 1 and 2 control panels, Division 1 and 2 valves, Division 1 and 2 instruments, Division 1 and 2 cable trays, fuel storage rack, inclined fuel transfer tube, and shroud head and separator.

Combustible Materials Lubricants Cloth, Plastic and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided at elevations 778 and 803 for manual firefighting as shown on the referenced drawings. Linear thermal detectors are provided in the safety-related cable trays from elevations 755 feet to 803 feet.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

APPENDIX E E3.3-6 REV. 11, JANUARY 2005

CPS/USAR 3.3.2.6 Fire Area C-2, Elevation 803 - 3 Containment Description This elevation consists of a general access area and the RWCU filter demineralizer pumps and tanks. The floor area is 8862 ft2.

A plan view of this fire zone is shown on figure FP-6a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-6b. Safety-related cable trays are shown on Cable Tray Figure 6.

The floor contains three 4-inch floor drains which are routed down to a sump at elevation 737 feet 0 inch and is not fire rated.

The entire area also contains two open stairways: one up to elevation 828 feet 3 inch and down to elevation 778 feet 0 inch and one up to elevation 828 feet 3 inch and down to elevation 754 feet 2 inch.

This area is served either by the containment HVAC system or by the continuous containment purge system and the recirculating type air-handling units served by containment chilled water system.

Air is not normally exhausted from the dome area. however, a manual damper connecting to the dome area ductwork can be opened when required to exhaust air from this area.

Safety-Related Equipment The safety-related equipment located within the fire area are Division 1 and 2 control panels, Division 1 and 2 valves, Division 1 and 2 instruments, Division 1 and 2 cable trays, fuel storage rack, inclined fuel transfer tube, and shroud head and separator.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings. Linear thermal detectors are provided in the safety-related cable trays from elevations 755 feet to 803 feet.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

APPENDIX E E3.3-7 REV. 11, JANUARY 2005

CPS/USAR 3.3.2.7 Fire Area C-2; Elevation 816 - 7 Containment Description This zone consists of filter/demineralizer vessels, containment building transfer fan, and area coolers. The floor area is 483 ft2.

A plan view of this fire zone elevation is shown on Figure FP-6a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-6b.

The floor is 40-inch minimum concrete and is not fire rated. There are no floor drains. The walls are 36-inch minimum concrete and are not fire rated. The ceiling is 30-inch minimum concrete and is not fire rated.

This area is served either by the containment HVAC system or by the continuous containment purge system and the recirculating type air-handling units served by containment chilled water system.

Air is not normally exhausted from the dome area. However, a manual damper connecting to the dome area ductwork can be opened when required to exhaust air from this area.

Safety-Related Equipment The safety-related equipment located within the fire area are Division 1 and 2 control panels, Division 1 and 2 valves, Division 1 and 2 instruments, Division 1 and 2 cable trays, fuel storage rack, inclined fuel transfer tube, and shroud head and separator.

Combustible Materials Cloth, Rubber and Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided at elevation 803 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

3.3.2.8 Fire Area C-2; Elevation 828 - 3 Containment Description This elevation consists of the refueling floor. The floor area is 12,076 ft2.

APPENDIX E E3.3-8 REV. 14, JANUARY 2011

CPS/USAR A plan view of this fire zone elevation is shown on Figure FP-7a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-7b.

The floor is 24-inch minimum concrete with 1-1/2-inch steel grating and 1/2-inch checkered plate. The floors are not fire rated. The walls are 36-inch minimum reinforced concrete and are 3-hour fire rated at the drywell. The ceiling (containment dome) is 30-inch minimum concrete and is 3-hour fire rated. There are two 4-inch floor drains and four 8- x 8- x 4-inch box drains routed to a sump at elevation 737 feet 0 inch.

The entire area also contains two open stairways: one down to elevation 778 feet 0 inch and one down to elevation 754 feet 2 inch.

This area is served either by the containment HVAC system or by the continuous containment purge system and the recirculating type air-handling units served by containment chilled water system.

Air is not normally exhausted from the dome area. However, a manual damper connecting to the dome area ductwork can be opened when required to exhaust air from this area.

Safety-Related Equipment The safety-related equipment located within the fire area are Division 1 and 2 control panels, Division 1 and 2 valves, Division 1 and 2 instruments, Division 1 and 2 cable trays, head holding pedestal dryer and separator strong back, head strong back carousel, refuel platform equipment assembly, refueling platform, fuel storage rack, inclined fuel transfer tube, shroud head and separator, and steam dryer.

Combustible Materials Lubricants Cable Insulation HVAC Material Rubber, Plastic and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.2.2 of the Safe Shutdown Analysis.

APPENDIX E E3.3-9 REV. 14, JANUARY 2011

CPS/USAR CONTROL BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing CB-1 CB-1a Unit 2 Diesel Generator E3.4-1 FP-8a FP-8b -

Bays - elevations 712'-0", FP-9a FP-9b 719'-0", 737'-0" FP-10a FP-10b CB-1b General Access Area and E3.4-2 FP-8a FP-8b 7 Common Station HVAC Vent- elevation 702'-0",

699'0" through 935'6" CB-1c General Access and HVAC E3.4-3 FP-9a FP-9b 8 Area - elevation 719'-0" CB-1d Rad-Chem Laboratory Area E3.4-4 FP-10a FP-10b -

- elevation 737'-0" CB-1e General Access Area - E3.4-5 FP-10a FP-10b 9 elevations 737'-0", 751'-0" FP-11a FP-11b CB-1f General Access Area - E3.4-6 FP-12a FP-12b 10 elevation 762'-0" CB-1g Unit 2 Cable Spreading E3.4-7 FP-13a FP-13b 11 Rooms - elevation 781'-0" CB-1h East Stairwell - elevations E3.4-8 FP-8a FP-8b -

702'-0" to 847'-0" FP-9a FP-9b -

FP-10a FP-10b -

FP-11a FP-11b -

FP-12a FP-12b -

FP-13a FP-13b -

FP-14a FP-14b -

FP-15a FP-15b -

CB-1i Air Handling Equipment E3.4-9 FP-15a FP-15b 13 Area - elevation 825'-0" CB-2 - Division 2 Cable Spreading E3.4-10 FP-13a FP-13b 11 room - elevation 781'-0" CB-3 CB-3a Auxiliary Electric Equipment E3.4-11 FP-13a FP-13b 11 Room - elevation 781'-0" APPENDIX E E3.4-i REV. 18, OCTOBER 2016

CPS/USAR CONTROL BUILDING (Contd)

FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing CB-3b Division 4 NSPS Inverter E3.4-12 FP-13a FP-13b -

Room - elevation 781'-0" CB-3c Nonsafety Battery Room E3.4-13 FP-13a FP-13b -

(West) - elevation 781'-0" CB-3d Division 4 Battery Room - E3.4-14 FP-13a FP-13b -

elevation 781'-0" CB-3e Division 2 NSPS Inverter E3.4-15 FP-13a FP-13b -

Room - elevation 781'-0" CB-3f Division 1 NSPS Inverter E3.4-16 FP-13a FP-13b -

Room - elevation 781'-0" CB-3g Nonsafety Battery Room E3.4-17 FP-13a FP-13b -

(East) - elevation CB-4 - Division 1 Cable Spreading E3.4-18 FP-13a FP-13b 11 Room - elevation 781'-0" CB-5 CB-5a Division 3 Switchgear Room E3.4-19 FP-13a FP-13b 11

- elevation 781'-0" CB-5b Division 3 Battery Room - E3.4-20 FP-13a FP-13b -

elevation 781'-0" CB-5c Division 1 and 2 Cable E3.4-21 FP-13a FP-13b 11 Risers - elevation 781'-0" CB-6 CB-6a Main Control Room E3.4-21 FP-14a FP-14b 12 Complex - elevation 800'-0" CB-6b Operations Admin Area - E3.4-23 FP-14a FP-14b 12 elevation 800'-0" CB-6c Old Technical Support E3.4-23 FP-14a FP-14b -

Center - elevation 800'-0" CB-6d Corridor and Miscellaneous E3.4-24 FP-14a FP-14b 12 Rooms - elevation 800'-0" APPENDIX E E3.4-ii REV. 18, OCTOBER 2016

CPS/USAR CONTROL BUILDING (Contd)

FIRE AREA/ZONE INDEX CB-7 - West Stairwell and E3.4-25 FP-8a FP-8b -

Personnel Access Walkway FP-9a FP-9b -

- elevations 702'-0" to 847'- FP-10a FP-10b -

0" FP-11a FP-11b -

FP-12a FP-12b -

FP-13a FP-13B -

FP-14a FP-14b 12 FP-15a FP-15b -

APPENDIX E E3.4-iii REV. 18, OCTOBER 2016

CPS/USAR 3.4 CONTROL BUILDING 3.4.1 Fire Area CB-1 3.4.1.1 Fire Zone CB-1a; Elevations 712 - 0 & 719 - 0 and 737 - 0 Unit 2 Diesel Generator Bays Description This zone crosses multiple elevations. The 712' - 0" and 719' - 0" elevations were treated together; The combined floor area is 4431 ft2. The 737' - 0" elevation was analyzed separately; it has a floor area of 6892 ft2.

A plan view of this fire zone is shown on Figures FP-8a through FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b through FP-10b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot reinforced concrete with thirteen 4-inch floor drains leading to a sump within the zone. The floor is not fire rated. Walls are 12-inch minimum reinforced concrete, or 11-5/8 or 7-5/8-inch hollow concrete block and are not fire rated, except the west wall and the south corridor wall common to D-1, D-2, and D-3, which are 3-hour fire rated; and the wall common to CB-1h, which is 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete, is 3-hour fire rated, and is the floor of elevation 762 feet 0 inch.

Safety-Related Equipment None.

Combustible Materials Paper, Plastic, Cloth, and Rubber Fire Load Elevations 712'-0" and 719'-0", Unit 2 Diesel Generator Bays: The fire load for the fire zone is low.

Elevation 737'-0", Unit 2 Diesel Generator Bay: The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (at elevation 719 feet 0 inch) and hose stations (at elevations 712 feet 0 inch and 719 feet 0 inch) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

APPENDIX E E3.4-1 REV. 11, JANUARY 2005

CPS/USAR 3.4.1.2 Fire Zone CB-1b; Elevation 702 - 0 and Elevations 699 - 0 through 935 - 6 General Access Area and Common Station HVAC Vent Description This zone is the general access area at elevation 702 feet 0 inch of the control building, and it includes the hydrogen recombiner rooms, the drywell purge filter units room, and the common station HVAC vent. The floor area is 25,669 ft2.

A plan view of this fire zone is shown on Figure FP-8a. The common station HVAC vent is shown on Figures FP-8a, FP-9a, FP-10a, FP-12a, FP-13a, FP-14a, and FP-33a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-8b, and Figures FP-10b, FP-12b, and FP-33b for the common station HVAC vent. No safety-related cable trays are located in this fire zone.

The floor is 9-foot reinforced concrete. The floor is not fire rated. There are sixty-five 4-inch floor drains in the zone. The walls are 12-inch minimum reinforced concrete, 11-5/8-inch minimum solid concrete block or 7-5/8-inch hollow concrete block. The north and west walls are 3-hour fire rated. The two enclosed stairways and the two enclosed elevators are 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is not fire rated.

The common station HVAC vent bottoms at 699 feet and rises from Fire Zone CB-1b through Fire Zones CB-1c and D-4a and Fire Area D-10, and up through the Diesel Generator Building roof and terminating at elevation 935'-6", as shown on Figure FP-33a. The west wall of the common station HVAC vent is the Diesel Generator Building/Fuel Building common wall, is 24" reinforced concrete, and is 3-hour fire rated from the Upper Basement at elevation 712'-0" to the Diesel Generator Building ceiling at elevation 800'-0", as shown on Figure FP-33b. The other three walls of the vent are 16" reinforced concrete for radiation shielding, and are 3-hour fire rated at elevations 737'-0" and 762'-0" through Fire Zone D-4a and Fire Area D-10, respectively.

These walls at other elevations are not fire rated.

Conditioned ventilation air is supplied to this zone through the auxiliary building HVAC system supply ductwork. A portion of the air is exhausted through the auxiliary building HVAC system exhaust ductwork. The balance is staged ductless via a backdraft damper to the drywell purge unit cubicle and directly to the hydrogen recombiner rooms. Air at this elevation is then exhausted via the auxiliary building HVAC system exhaust ductwork.

Area coolers (supplied by the plant chilled water system) in this zone will recirculate air within these zones.

A portion of the supplied air to the general area on this elevation will be exhausted from the hydrogen recombiner room though the auxiliary building HVAC system exhaust ductwork.

A portion of the supplied air to the general area on this elevation is staged to the drywell purge filter room via a backdraft damper where it is exhausted through the auxiliary building HVAC system exhaust ductwork.

Safety-Related Equipment Safety-related equipment located in this zone includes Division 1 and 2 hydrogen recombiners and room fans.

APPENDIX E E3.4-2 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants Cable Insulation HVAC Material Paper, Plastic, Rubber, Cloth and Wood Hydrogen in Recombiners Charcoal Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings. Each of the three drywell purge filter units is protected by a manual deluge system.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.3 Fire Zone CB-1c; Elevation 719 - 0 General Access and HVAC Area Description This zone is a general access area and the general heating, ventilation, and air conditioning equipment area. Also the standby gas treatment systems A and B are located in the zone. The floor area is 24,348 ft2.

A plan view of this fire zone is shown on Figure FP-9a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-9b. Safety-related cable trays are shown on cable tray Figure 8.

The floor is 12-inch reinforced concrete and has thirty-four 4-inch floor drains. The floor of the west and east radwaste pipe tunnels are 3-hour fire rated, and the remaining floor is not fire rated. The walls are 36-inch reinforced concrete, 15-5/8-inch solid concrete block, or 11-5/8-inch hollow concrete block. The north and west walls, including walls and ceiling of the west radwaste pipe tunnel and interior walls and ceiling of the east radwaste pipe tunnel, are 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> rated and the remaining walls are not fire rated. The ceiling is 20-inch reinforced concrete and is 3-hour fire rated from Column/Rows AC-AE and 124-130, and the under the cable riser area of Zone CB-1d. There are four stair systems in this zone: two are open and two are enclosed (CB-1h and CB-7) in 1.9-hour fire rated walls. There are two elevators (CB-1h and CB -7) enclosed in 1.9-hour fire rated walls.

Conditioned ventilation air is supplied to this zone through the auxiliary building HVAC system supply ductwork. A portion of the air is exhausted through the auxiliary building HVAC system exhaust ductwork. The balance is staged ductless via a backdraft damper to the standby gas treatment cubicle. Air is then exhausted via the auxiliary building HVAC system exhaust APPENDIX E E3.4-3 REV. 21, MARCH 2020

CPS/USAR ductwork. Area coolers (supplied by the plant chilled water system) in the zone recirculate air within this zone.

A portion of the supplied air to the general area on this elevation is staged to the standby gas treatment cubicles via backdraft dampers where it is exhausted through the auxiliary building HVAC system ductwork. Safety-related recirculation cooling units are provided in these rooms.

Safety-Related Equipment Division 1 and 2 cable trays, control building motor control centers, the standby gas treatment systems, and control and instrument panels are located in this zone.

Combustible Materials Lubricants Cable Insulation Charcoal Plastic, Rubber, Cloth and Wood Fire Load The fire load for the fire zone is low.

Fire Detection and Protection An ionization detection system is installed in this zone. The three standby gas treatment filter packages are protected by manual deluge systems. An automatic wet-pipe sprinkler system protects the small open pipe hatch at the ceiling of Fire Zone CB-1c. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.4 Fire Zone CB-1d; Elevation 737 - 0 Rad-Chem Laboratory Area Description This zone consists of the rad-chem laboratory area and has a floor area of 12,483 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. Safety-related cable trays are located in this fire zone as shown on cable tray Figure 9.

The floor is 20-inch reinforced concrete and is not fire rated, except for the floor of the cable riser area which is 3-hour fire rated. There are thirty-six 4-inch floor drains and two 20-inch drains in this zone. The walls are 7-5/8-inch minimum solid or hollow concrete block or 18-inch minimum reinforced concrete. The north and west exterior walls are 3-hour fire rated. The two Radwaste pipe tunnels are 3-hour fire rated. The south, east and west walls of the cable riser and stairwell room are 1.9-hour fire rated. The interior walls adjacent to the laundry surrounding the cable chase are 1.9 hour1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> fire rated barriers. The interior walls enclosing the two stairways APPENDIX E E3.4-4 REV. 11, JANUARY 2005

CPS/USAR are 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch reinforced concrete at elevation 751 feet 0 inch and is not fire rated.

Safety-Related Equipment Division 2 safety-related cables are located in the zone.

Combustible Materials Lubricants Cable Insulation HVAC Materials Flammable Liquids, PVC, Acetone and Wood Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection An ionization detection system is provided for the radiation-chemistry lab and office, and cold lab. Portable fire extinguishers and hose stations are provided for manual fire fighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.5 Fire Zone CB-1e; Elevations 737 - 0 & 751 - 0 General Access Area Description The zone consists of a general access area at elevation 737 feet 0 inch and a secondary floor at 751 - 0. Both sections are treated together for analysis; with a combined floor area of 18,072 ft2.

A plan view of this fire zone is shown on Figures FP-10a and FP-11a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-10b and FP-11b. Safety-related cable trays are shown on cable tray Figure 9.

The floor of the general access area is 20-inch minimum reinforced concrete with eleven 4-inch floor drains and one 2-inch drain to a sump in Zone CB-1b.

The floor of the secondary level is 8-inch reinforced concrete and has thirteen 4-inch floor drains to a sump in Zone CB-1b.

The floors are not fire rated. The walls are 18-inch minimum reinforced concrete, 15-5/8-inch solid concrete block, or 7-5/8-inch minimum hollow concrete block. The portion of the south wall adjacent to the diesel-generator rooms (Fire Areas D-4a, D-5a, and D-6a) and the north wall adjacent to the radwaste building above elevation 751 feet 0 inch and the west wall adjacent to the auxiliary building are 3-hour fire rated. The two enclosed stairways and two enclosed APPENDIX E E3.4-5 REV. 11, JANUARY 2005

CPS/USAR elevators are 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch minimum reinforced concrete with open areas for equipment removal. The ceiling is not fire rated. There are two open stair systems to the secondary floor.

Conditioned ventilation air is supplied to this zone through the auxiliary building HVAC supply system ductwork. A portion of the supplied air is exhausted directly and the balance is staged ductless to the two storage rooms located within this zone. Air from corridor and storage rooms is then exhausted through the auxiliary building HVAC ductwork. Area coolers (supplied by the plant chilled water system) in this zone will recirculate air within this zone.

Safety-Related Equipment Division 1 and 2 electrical cables, diesel generator motor control centers, Division 1 and 2 cable trays, and the Division 1 hydrogen recombiner control panel are located in this zone.

Combustible Materials Cable Insulation HVAC Materials Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system provided in this zone at elevation 751. An automatic wet pipe sprinkler system is provided in the zone at elevations 737 and elevation 751 over Zone CB-1d between Column Rows 124-128 and Column Lines S-Y, Column Rows 128-130 and Column Lines Y-AC and Column Rows 130-132 and Columns Lines Y-10-0 south of AA. This system will also protect the west pipe hatch at column row 125/AC and the equipment hatch at column row 132/AA leading to elevation 762 feet 0 inch. Portable fire extinguishers and hose stations are provided at elevations 737 and 751 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.6 Fire Zone CB-1f, Elevation 762 - 0 General Access Area Description The zone is a general access and equipment area of the control building. The floor area is 18,462 ft2.

A plan view of this fire zone is shown on Figure FP-12a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-12b. Safety-related cable trays are shown on cable tray Figure 10.

APPENDIX E E3.4-6 REV. 15, JANUARY 2013

CPS/USAR The floor is 12-inch reinforced concrete with twenty-three 4-inch floor drains and open areas for piping and equipment removal. The floor is not fire rated except for the floor over the two radwaste pipe tunnels which are 3-hour fire rated. The zone walls are 24-inch minimum concrete and are 3-hour fire rated except for the east wall which is not fire rated. The two enclosed stairways and two enclosed elevators (CB-1h and CB-7) are 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated between Column Rows 124-130 and Column Lines S-AC.

Air is supplied and exhausted ducted from this zone by the auxiliary building ventilation system.

Area coolers (supplied by the plant chilled water system) in the area recirculate air within this zone.

Safety-Related Equipment Division 1 and 2 cable trays and a Division 2 cable are routed through the zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system provided in this zone. An automatic wet pipe sprinkler system protects the area between column lines S-AC and column rows 124-130 as shown in Figure FP-12b. This system protects both Division 1 and 2 cables that serve safe shutdown equipment. An automatic wet pipe system is also protecting the west pipe hatch located at the intersection of column line AC and column row 125. Portable fire extinguishers and hose stations are provided for manual firefighting.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.7 Fire Zone CB-1g; Elevation 781 - 0 Unit 2 Cable Spreading Rooms Description This zone is a general access for the cable spreading rooms and has a floor area of 8790 ft 2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. Safety-related cable trays are shown on cable tray Figure 11.

APPENDIX E E3.4-7 REV. 11, JANUARY 2005

CPS/USAR The floor is 12-inch minimum reinforced concrete with twenty-four 4-inch floor drains and is not fire rated. The walls are 24-inch minimum reinforced concrete or 7-5/8-inch reinforced hollow concrete block. The north and south walls are 3-hour fire rated, and the west wall and stair/elevator enclosure are 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling is 23-inch minimum reinforced concrete and is 3-hour fire rated.

Safety-Related Equipment Division 1 and 2 cable trays are in this zone.

Combustible Materials Cable Insulation HVAC Material Plastic, Rubber, Cloth, Wood and Paper Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings. An ionization detection system is located in this zone.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.8 Fire Zone CB-1h; Elevations 702 - 0 through 847 - 0 East Stairwell Description This zone is a stairwell tower and adjacent elevator shaft (including a janitor's closet at elevation 800 feet 0 inch) which is enclosed by 1.9-hour fire rated walls except at elevation 800 feet 0 inch where the walls are 3-hour fire rated (except the east exterior wall which is 1.9-hour fire rated).

The floor areas at each elevation are:

702' - 0" 150 ft2 719' - 0" 101 ft2 737' - 0" 69 ft2 762' - 0" 54 ft2 781' - 0" 300 ft2 800' - 0" 324 ft2 828' - 3" 335 ft2 847' - 0" 307 ft2 A plan view of this fire zone is shown on Figures FP-8a through FP-15a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b through FP-15b. No safety-related cable trays are located in this fire zone.

APPENDIX E E3.4-8 REV. 11, JANUARY 2005

CPS/USAR The walls are 12-inch minimum reinforced concrete or 7-5/8-inch hollow concrete block. On elevation 702 feet 0 inch and above, the stairwell tower enclosure includes the adjacent elevator enclosure, which is partitioned by a 1.9-hour fire wall.

The enclosure walls at elevation 800 feet 0 inch are 3-hour fire rated with the security air lock door with 1.9-hour fire rating. The floor on elevation 702 feet 0 inch is 9-foot reinforced concrete. The ceiling at elevation 847 feet 0 inch is 24-inch concrete on steel decking. Neither the floor nor ceiling is fire rated, except for the stairwell ceiling under the Control Building Elevator Machine Room which is 1.9-hour fire rated. The east wall of the Control Building Elevator Machine Room is 1.9-hour fire rated. The exterior walls and ceiling at elevation 847 feet 0 inch are not fire rated.

Safety-Related Equipment None.

Combustible Materials Lubricants Plastic, Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the zone at elevation 800 feet 0 inch.

Portable fire extinguishers and hose stations are provided for manual firefighting starting at elevation 781 feet 0 inch as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.1.9 Fire Area CB-1: Zone CB-1i, Elevations 781-0, 800-0, 825-0 Air Handling Equipment Area Description This zone contains the air handling equipment for the control room and auxiliary buildings and has a floor area of 18,230 ft2.

A plan view of this fire zone is shown on Figures FP-13a through FP-15a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-13b through FP-15b. Safety- related cable trays are shown on cable tray Figure 13.

There are two 2-inch shower drains and sixteen 4-inch floor drains in this zone. The floors are 12-inch minimum concrete steel decking and are 3-hour fire rated. The walls are 24-inch reinforced concrete, 11-5/8-inch hollow concrete block, or 7-5/8-inch hollow concrete block. The walls at the stair/elevator enclosures (CB-1h and CB-7) are 1.9-hour fire rated. The walls of the APPENDIX E E3.4-9 REV. 11, JANUARY 2005

CPS/USAR hatch at elevation 8000 are 3-hour fire rated. The missile wall and remaining exterior walls are not fire rated. The ceiling is 24-inch concrete on steel decking and is 3-hour fire rated. The dividing wall at Column 130 between missile wall and Row AC has a 3-hour fire rating.

Safety-Related Equipment This zone contains the Division 1 and 2 control room air handling units, control room chillers, control room air filter packages and fans, Division 1 and 2 electrical cables and trays, unit substations, and motor control centers and panels.

Combustible Materials Lubricants Cable insulation HVAC materials Rubber, Plastic, Cloth, Paper and Wood Charcoal Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection The control room air filter packages and portions of the control room air handling units are protected by manual deluge sprinkler systems. An ionization detection system is located in this zone west of Column 133. (Two smoke detectors were deleted from the VC air intake area, Column/Row 129-132/S.) Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.1 of the Safe Shutdown Analysis.

3.4.2 Fire Area CB-2; Elevation 781 - 0 Division 2 Cable Spreading Room Description The area is the Division 2 cable spreading room at elevation 781 feet 0 inch of the control building. The floor area is 2092 ft2.

A plan view of this fire area is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. Safety-related cable trays are shown on cable tray Figure 11.

The floor is 18-inch minimum concrete with five 4-inch floor drains and is 3-hour fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch hollow concrete block. The walls are 1.9-hour fire rated except the north and west walls which are 3-hour fire rated. The ceiling is 23-inch reinforced concrete and is 3-hour fire rated.

APPENDIX E E3.4-10 REV. 11, JANUARY 2005

CPS/USAR Conditioned air is supplied to this area from a switchgear heat removal system non safety-related coil cabinet via its respective fan at normal operating conditions, and from a safety-related coil cabinet via its respective fan at abnormal operating conditions. Air is also staged ductless from Division 2 inverter room to Division 1 cable spread area. Air is then returned through the ductwork via a switchgear heat removal return air fan to the switchgear room where it is returned ductless to the operating switchgear heat removal fan via its respective coil cabinet.

Safety-Related Equipment Division 2 cable trays are located in the area.

Combustible Materials Cable Insulation Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is high.

Fire Detection and Protection There is an ionization fire detection system and automatic wet pipe sprinkler system in the area.

Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.3.2 of the Safe Shutdown Analysis.

3.4.3 Fire Area CB-3 3.4.3.1 Fire Zone CB-3a; Elevations 781 - 0 & 790 - 0 Auxiliary Electric Equipment Room Description The area includes the auxiliary electric equipment room at elevation 781 feet 0 inch and the space over zones CB-3c, CB-3d, CB-3e, CB-3f, and CB-3g at elevation 790 feet 0 inch. The total floor area is 3001 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. Safety-related cable trays are shown on cable tray Figure 11.

The floor is 18-inch reinforced concrete with seven 4-inch floor drains. The floor is 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch hollow concrete block. The walls are 1.9-hour fire rated, except the portion of the west wall adjacent to the auxiliary building, which is 3-hour fire rated. The ceiling is 23-inch reinforced concrete and is 3-hour fire rated.

Conditioned air is supplied to this zone from the switchgear heat removal system non safety-related coil cabinet via its respective fan at normal operating conditions, and from the safety-APPENDIX E E3.4-11 REV. 11, JANUARY 2005

CPS/USAR related coil cabinet via its respective fan at abnormal operating conditions. Air is also staged ductless from the Division 1 inverter room to the Division 1 cable spreading area. Air is then returned through ductwork via the switchgear heat removal return air fan to the switchgear room where it is returned ductless to the operating switchgear heat removal fan via its respective coil cabinet.

Safety-Related Equipment Division 1 and 2 cable trays, Division 1 and 2 inverter room cubicle HVAC panel, Division 1 and 2 switchgear heat removal return fans, and Division 1 and 2 optical isolator cabinets are located in this area.

Combustible Materials Cable Insulation HVAC Material Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. This zone is protected by an automatic preaction sprinkler system activated by ionization detectors. There is an Insurer-required Halon fire suppression system installed to protect non-safety BOP equipment in the underfloor space below the electrical panels. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.2 Fire Zone CB-3b; Elevation 781 - 0 Division 4 NSPS Inverter Room Description The zone is the Division 4 nuclear systems protection system inverter room. The floor area is 202 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 18-inch minimum concrete with no floor drains. The floor is 3-hour fire rated. The walls are 24-inch concrete or 7-5/8-inch hollow concrete block. The west wall is 3-hour fire rated; the remaining walls are 1.9-hour fire rated. The ceiling is 23-inch minimum concrete and is 3-hour fire rated.

APPENDIX E E3.4-12 REV. 15, JANUARY 2013

CPS/USAR Conditioned air is supplied to the inverter from the switchgear heat removal system non safety-related switchgear heat removal coil cabinet at normal operating conditions and from the safety-related switchgear heat removal coil cabinet during abnormal conditions. Air is returned by ducted means of the switchgear heat removal return air fan to the switchgear room; then to the switchgear heat removal non-safety-related fan at normal operating conditions (safety-related fan at abnormal conditions) via the coil cabinet; and then supplied to the inverter and other areas to provide cooling. Area coolers recirculate air within this zone.

Safety-Related Equipment The Division 4 NSPS inverter, Division 4 cable and bypass transformer, distribution panel and battery charger, and MCC are located in the zone.

Combustible Materials Cable Insulation Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.3 Fire Zone CB-3c; Elevation 781 - 0 Nonsafety Battery Room (West)

Description The zone is a non-safety-related battery room at elevation 781 feet 0 inch of the control building.

The floor area is 174 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 18-inch reinforced concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 6-inch reinforced concrete and is 1.9-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. Air enters from the surrounding areas through a backdraft damper and exhausts through the battery room exhaust fans.

APPENDIX E E3.4-13 REV. 14, JANUARY 2011

CPS/USAR The design and construction of the structural boundaries of the zone and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment None.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system located in this zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.4 Fire Zone CB-3d; Elevation 781 - 0 Division 4 Battery Room Description The zone is the Division 4 battery room at elevation 781 feet 0 inch of the control building. The floor area is 134 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 18-inch reinforced concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 6-inch reinforced concrete and is 1.9-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. Air enters from the surrounding areas through a backdraft damper and exhausts through the battery room exhaust fans.

The design and construction of the structural boundaries of the zone and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment Division 4 batteries are located in the zone.

APPENDIX E E3.4-14 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.5 Fire Zone CB-3e; Elevation 781 - 0 Division 2 NSPS Inverter Room Description The zone is the Division 2 nuclear systems protection system (NSPS) inverter room. The floor area is 117 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No Safety-related cable trays are located in this fire zone.

The floor is 18-inch minimum concrete with no floor drains. The floor is 3-hour fire rated. The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 6-inch minimum concrete and is 1.9-hour fire rated.

Conditioned air is supplied to the inverter from the switchgear heat removal system non safety-related switchgear heat removal coil cabinet at normal operating conditions and from the safety-related switchgear heat removal coil cabinet during abnormal conditions. Air is induced to the cable spread area and then returned by means of the switchgear heat removal return air fan to the switchgear room; then to the switchgear heat removal non-safety-related fan at normal operating conditions (safety-related fan at abnormal conditions) via coil cabinet; and then supplied to the inverter and other areas to provide cooling. An area cooler recirculates air within this zone.

Safety-Related Equipment The Division 2 NSPS inverter, Division 2 electrical cable and bypass transformer, and distribution panel are located in the zone.

Combustible Materials Cable Insulation Plastic APPENDIX E E3.4-15 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.6 Fire Zone CB-3f; Elevation 781 - 0 Division 1 NSPS Inverter Room Description The zone is the Division 1 nuclear system protection system (NSPS) inverter room. The floor area is 117 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 18-inch reinforced concrete with no floor drains. The floor is 3-hour fire rated. The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 6-inch reinforced concrete and is 1.9-hour fire rated. Conditioned air is supplied to Division 1 inverter from the switchgear heat removal system non-safety-related switchgear heat removal coil cabinet at normal operating conditions and from the safety-related switchgear heat removal coil cabinet during abnormal conditions. Air is induced to Division 1 cable spread area and then returned by means of the switchgear heat removal return air fan to the switchgear room; then to the switchgear heat removal non-safety-related fan at normal operating conditions (safety related fan at abnormal conditions) via coil cabinet; and then supplied to the Division 1 inverter and other areas to provide cooling. An area cooler recirculates air within this zone.

Safety-Related Equipment The Division 1 NSPS inverter, bypass transformer, and distribution panel are located in the zone.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is low.

APPENDIX E E3.4-16 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.3.7 Fire Zone CB-3g; Elevation 781 - 0 Nonsafety Battery Room (East)

Description The zone contains a non-safety-related battery room at elevation 781 feet 0 inch. The floor area is 174 ft2.

A plan view of this zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, fire and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 18-inch reinforced concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 7-5/8-inch hollow concrete block and are 1.9-our fire rated. The ceiling is 6-inch reinforced concrete and is 1.9-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. Air enters from the surrounding areas through a backdraft damper and exhausts through the battery room exhaust fans.

The design and construction of the structural boundaries of the zone and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment None.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.4-17 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.3 of the Safe Shutdown Analysis.

3.4.4 Fire Area CB-4; Elevation 781 - 0 Division 1 Cable Spreading Room Description The area is the Division 1 cable spreading room at elevation 781 feet 0 inch of the control building. The floor area is 2042 ft2.

A plan view of this fire area is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure 13b. Safety-related cable trays are shown on cable tray Figure 11.

The floor is 18-inch reinforced concrete with five 4-inch floor drains. The floor is 3-hour fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch hollow concrete block. All walls are 1.9-hour fire rated except the west wall, which is 3-hour fire rated. The ceiling is 23-inch reinforced concrete and is 3-hour fire rated.

Conditioned air is supplied to this area from the switchgear heat removal system non safety-related coil cabinet via its respective fan at normal operating conditions, and from the safety-related coil cabinet via its respective fan at abnormal operating conditions. Air is also staged ductless from the Division 1 inverter room to the Division 1 cable spread area. Air is then returned through ductwork via the switchgear heat removal return air fan to the switchgear room where it is returned ductless to the operating switchgear heat removal fan via its respective coil cabinet.

Safety-Related Equipment Division 1 cable trays and Division 2 cables are located in the area. (Note: These Division 2 cables are not required for safe shutdown.)

Combustible Materials Cable Insulation HVAC Material Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in this area. This area is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.4-18 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.3.4 of the Safe Shutdown Analysis.

3.4.5 Fire Area CB-5 3.4.5.1 Fire Zone CB-5a; Elevation 781 - 0 Division 3 Switchgear Room Description The zone is the Division 3 switchgear room and general access area. The floor area is 1448 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. Safety-related cable trays are shown on cable tray Figure 11.

The floor is 12-inch reinforced concrete with three 4-inch floor drains. The floor is 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch hollow or solid concrete block.

The walls are 1.9-hour fire rated except the south exterior wall and the equipment hatch enclosure wall which are 3-hour rated. The ceiling is 23-inch reinforced concrete and is 3-hour fire rated.

A safety-related switchgear heat removal coil cabinet and associated fan at abnormal operation and non-safety-related coil cabinet via its respective fan at normal operation conditions are located in this zone. The coil cabinets and fan recirculate air within this zone. During normal operation, the auxiliary building HVAC supply system furnishes conditioned air to this zone and it is exhausted by the auxiliary building HVAC exhaust system.

Safety-Related Equipment The Division 3 4.16-kV switchgear unit, 480-volt transformer, battery charger, motor control centers, switchgear heat removal and condensing units, Division 3 cable trays, NSPS inverter, bypass transformer, and distribution panel are located in the zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Rubber, Cloth and Paper Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.4-19 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.5 of the Safe Shutdown Analysis.

3.4.5.2 Fire Zone CB-5b; Elevation 781 - 0 Division 3 Battery Room Description The Zone is the Division 3 battery room at elevation 781 feet 0 inch. The floor area is 114 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 12-inch reinforced concrete with one 4-inch floor drain. The floor is 3-hour fire rated.

The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 23-inch reinforced concrete and is 3-hour fire rated.

The battery room ventilation system is designed to keep the generated hydrogen concentration to below 2% by volume. Air enters from the surrounding areas through a backdraft damper and exhausts through the battery room exhaust fans.

The design and construction of the structural boundaries of the zone and the battery room ventilation system preclude the possibility of hydrogen buildup.

Safety-Related Equipment Division 3 batteries and battery room exhaust fan are located in the zone.

Combustible Materials Cable Insulation Plastic Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual fire fighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.5 of the Safe Shutdown Analysis.

APPENDIX E E3.4-20 REV. 11, JANUARY 2005

CPS/USAR 3.4.5.3 Fire Zone CB-5c; Elevation 781 - 0 Divisions 1 and 2 Cable Risers Description The zone is a room enclosing Division 1 and 2 vertical cable risers. The floor area is 173 ft2.

A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. Safety-related cable trays are shown on cable tray Figure 11.

The floor is 12-inch reinforced concrete with or floor drains. The floor is 3-hour fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch hollow or solid concrete block. The walls are 1.9-hour fire rated except the south wall, which is 3-hour fire rated. The ceiling is 24-inch reinforced concrete and is 3-hour fire rated.

Safety-Related Equipment Division 1 and 2 cable trays are routed vertically through the zone.

Combustible Materials Cable Insulation Fire Load The fire load for the fire zone is high.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings. An ionization detection system and an automatic wet pipe sprinkler system is installed in this zone.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.5 of the Safe Shutdown Analysis.

3.4.6 Fire Area CB-6 3.4.6.1 Fire Zone CB-6a; Elevation 800 - 0 Main Control Room Complex Description This zone is the main control room complex and includes the computer room, Shift Manager's office and various offices. The floor area is 8360 ft2.

A plan view of this fire zone is shown on Figure FP-14a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-14b. Safety-related cable trays are shown on cable tray Figure 12.

APPENDIX E E3.4-21 REV. 11, JANUARY 2005

CPS/USAR The floor is 23-inch reinforced concrete. The floor is 3-hour fire rated. The walls are 24-inch minimum reinforced concrete or 7-5/8 inch hollow concrete block. The control room complex in this zone is separated from adjacent fire areas on the west by 3-hour fire rated walls. The north exterior wall is 3-hour fire rated. The interior fire zone boundary walls are 1.9-hour fire rated.

The ceiling is 24-inch reinforced concrete on metal decking with fireproofed structural steel. The ceiling is 3-hour fire rated.

The Clinton Power Station computer room is part of the Power Generation Control Complex (PGCC) designed by the General Electric Company. The design of the PGCC, including a fire hazards analysis of the PGCC, is addressed in GE's Topical Licensing Report NEDO-10466-A.

Conditioned air is supplied to this zone through either one of the safety related control room HVAC systems A or B (a mixture of hot and cold air depending on the load requirements) via common supply air ductwork. Air is then returned through the return air ductwork along with the return air from other areas supplied by this system by means of either one of this system's return air fans A or B. This zone is maintained at a slightly positive pressure relative to the adjacent areas resulting in the exfiltration of air.

Safety-Related Equipment The safety-related equipment located within the fire zone are the control cabinets and cables of all divisions.

Combustible Materials Cable Insulation HVAC Materials Plastic, Rubber, Cloth, Paper, Wood and PVC Carpet Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers (in the zone) and hose stations (outside the zone offices) are provided for manual firefighting as shown on the referenced drawings.

A Halon fire suppression system, upgraded to provide automatic initiation by the thermal detectors, is also provided as part of the Power Generation Control Complex (PGCC) designed by General Electric Company.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.6 of the Safe Shutdown Analysis.

APPENDIX E E3.4-22 REV. 11, JANUARY 2005

CPS/USAR 3.4.6.2 Fire Zone CB-6b; Elevation 800 - 0 Operations Admin Area Description This zone is what was to be the Unit 2 terminal cabinet and back-panel area of the control room and includes the TMI panel room. The floor area is 5631 ft2.

A plan view of this fire zone is shown on Figure FP-14a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-14b. Safety-related cable trays are shown on cable tray Figure 12.

The floor is 23-inch reinforced concrete and has two 4-inch floor drains. The floor is 3-hour fire rated. The walls are 24-inch reinforced concrete or 7-5/8-inch minimum hollow concrete block.

The control room complex in this zone is separated from adjacent fire zone CB-1h by 3-hour fire rated barriers. The north exterior wall is 3-hour fire rated. The interior fire zone boundary walls are 1.9-hour fire rated. The east exterior wall is not fire rated. The ceiling is 24-inch concrete on steel decking over fire protected structural steel and is 3-hour fire rated.

Safety-Related Equipment The safety-related equipment located within this zone includes Division 1, 2, and 3 instrument and control cables, terminal cabinets and panels, Division 1 and 2 cable trays, and control room breathing air bottles.

Combustible Materials Cable Insulation HVAC Materials Wood, Paper, Plastic, Rubber and Cloth Carpet Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings. An ionization detection system, as well as a partial automatic wet pipe sprinkler system, is located in this zone.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.6 of the Safe Shutdown Analysis.

3.4.6.3 Fire Zone CB-6c; Elevation 800 - 0 Old Technical Support Center Description The zone is the control room old technical support center. The floor area is 1005 ft2.

APPENDIX E E3.4-23 REV. 13, JANUARY 2009

CPS/USAR A plan view of this fire zone is shown on Figure FP-14a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-14b. No safety-related cable trays are located in this fire zone.

The floor is 23-inch reinforced concrete with no floor drains. The floor is 3-hour fire rated. The walls are 7-5/8-inch hollow concrete block and are 1.9-hour fire rated. The ceiling is 24-inch concrete on steel decking over fire protected structural steel. The ceiling is 3-hour fire rated.

Conditioned air is supplied to this zone through either one of the control room HVAC systems A or B (a mixture of hot and cold air depending on the load requirements) via common supply air ductwork. Air is then returned through the return air ductwork along with return air from other areas supplied by this system by means of either one of this system's return air fans A or B.

This zone is maintained at a slightly positive pressure relative to the adjacent areas resulting in the exfiltration of air.

Safety-Related Equipment None.

Combustible Materials HVAC Materials Plastic and Paper Carpet Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system in the zone. Portable fire extinguishers (in the zone) and hose stations (outside the zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.6 of the Safe Shutdown Analysis.

3.4.6.4 Fire Zone CB-6d; Elevation 800 - 0 Corridor and Miscellaneous Rooms Description This zone includes the locker room, various offices, storage rooms, kitchen, and corridor outside the control room complex. The floor area is 2538 ft2. A plan view of this fire zone is shown on Figure FP-14a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-14b. Safety-related cable trays are shown on cable tray Figure 12.

The floor is 24-inch reinforced concrete, has eleven 4-inch floor drains and is 3-hour fire rated.

The walls are 12-inch reinforced concrete or 7-5/8-inch hollow concrete block. The south, east, APPENDIX E E3.4-24 REV. 11, JANUARY 2005

CPS/USAR and west walls are 3-hour fire rated. The north wall is 1.9-hour fire rated. Interior walls that separate the air locks, kitchen, and corridor between the kitchen and the womens toilet are 1.9-hour fire rated. The eight (8) doors of the four (4) air locks are 1.9-hour fire rated. The ceiling is 24-inch concrete on steel decking with fireproofed structural steel and is 3-hour fire rated.

Safety-Related Equipment Division 1 and 2 vertical electrical cable risers are located in this zone.

Combustible Materials Cable Insulation HVAC Materials Plastic, Rubber, Cloth, Paper and Wood Carpet Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection An ionization detection system is provided for this zone. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.3.6 of the Safe Shutdown Analysis.

3.4.7 Fire Area CB-7; Elevations 702 - 0 through 847 - 0 West Stairwell and Personnel Access Walkway Description This area includes a stairwell tower and elevator shaft which is enclosed and partitioned by 1.9-hour fire rated walls, except at elevation 800 feet 0 inch and a corridor at elevation 801 feet 9 inches where the walls are 3-hour fire rated. In addition, this area includes a 400 ft2 Personnel Access Walkway at elevation 828-3 between the Control and Containment buildings where the walls, floor and ceiling are not fire rated. The floor areas are:

702' - 0" 150 ft2 719' - 0" 101 ft2 737' - 0" 69 ft2 762' - 0" 54 ft2 781' - 0" 300 ft2 800' - 0"/801' - 9" 1090 ft2 828' - 3" 735 ft2 847' - 0" 307 ft2 APPENDIX E E3.4-25 REV. 17, OCTOBER 2015

CPS/USAR A plan view of this fire area is shown on Figures FP-8a through FP-15a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b through FP-15b. Safety-related cable trays are shown on cable tray Figures 11 and 12.

The walls are 12-inch minimum reinforced concrete or 7-5/8-inch hollow concrete blocks. On elevations 702 feet 0 inch and above, the stairwell tower enclosure includes the adjacent elevator enclosure, which is partitioned by a 1.9-hour fire wall. On elevation 800 feet 0 inch, the enclosure includes the corridor at elevation 801 feet 9 inch west of the main control room. The enclosure and corridor walls are 3-hour fire rated with air lock doors with 1.9-hour fire rating.

The floor on elevation 702 feet 0 inch is 9-foot reinforced concrete. The walls, floor and ceiling for the Personnel Access Walkway at elevation 828-3 between the Control and Containment buildings consists of insulated sheet metal, with a minimum 16 inches of concrete inside the uninsulated sheet metal for the last 14-0 enclosing the personnel lock on Containment. The walls, floor and ceiling for this personnel lock are not fire rated. The ceiling at elevation 847 feet 0 inch is 24-inch concrete on steel decking. Neither the floor nor ceiling is fire rated except for the stairwell ceiling under the Control Building Elevator Machine Room which is 1.9-hour fire rated. The west wall in the Control Building Elevator Machine Room is 1.9-hour fire rated. The exterior walls and ceiling at elevation 847 feet 0 inch are not fire rated. The floor of the corridor west of the main control room is 18-inch minimum concrete and the ceiling is reinforced concrete. The corridor floor is 3-hour fire rated and the ceiling is not fire rated.

Safety-Related Equipment This area at elevation 781'-0" and the corridor at elevation 801'-9" contains the NSPS solenoid power inverter/bypass switches A and B, Division 3 and 4 cable trays, and control room breathing air bottles.

Combustible Materials Cable Insulation Clothing, Rubber, Plastic and Paper HVAC Material Lubricants Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided at elevations 781, 800, and 801 for manual firefighting as shown on the referenced drawings. There is an ionization detection system located in the stairwell at elevations 781 and 800, and in the corridor at elevation 801 feet.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.3.7 of the Safe Shutdown Analysis.

APPENDIX E E3.4-26 REV. 17, OCTOBER 2015

CPS/USAR DIESEL-GENERATOR BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing D-1 - Division 3 Diesel-Generator Fuel E3.5-1 FP-8a FP-8b -

Tank Room - elevations 712'-0", FP-9a FP-9b -

719'-0" D-2 - Division 1 Diesel-Generator Fuel E3.5-2 FP-8a FP-8b -

Tank Room - elevations 712'-0", FP-9a FP-9b -

719'-0" D-3 - Division 2 Diesel-Generator Fuel E3.5-3 FP-8a FP-8b -

Tank Room - elevations 712'-0", FP-9a FP-9a -

719'-0" D-4 D-4a Division 3 Diesel-Generator Room - E3.5-4 FP-10a FP-10b 9 elevation 737'-0" D-4b Division 3 Diesel-Generator Day E3.5-5 FP-10a FP-10b -

Tank Room - elevation 737'-0" D-5 D-5a Division 1 Diesel-Generator Room - E3.5-6 FP-10a FP-10b 9 elevation 737'-0" D-5b Division 1 Diesel-Generator Day E3.5-7 FP-10a FP-10b -

Tank Room - elevation 737'-0" D-6 D-6a Division 2 Diesel-Generator Room - E3.5-8 FP-10a FP-10b 9 elevation 737'-0" D-6b Division 2 Diesel-Generator Day E3.5-9 FP-10a FP-10b -

Tank Room - elevation 737'-0" D-7 - Division 3 Diesel-Generator HVAC E3.5-10 FP-12a FP-12b -

Room - elevation 762'-0" D-8 - Division 1 Diesel-Generator HVAC E3.5-11 FP-12a FP-12b -

Room - elevation 762'-0" D-9 - Division 2 Diesel-Generator HVAC E3.5-12 FP-12a FP-12b Room - elevation 762'-0" D-10 - General Access and HVAC Area - E3.5-12 FP-12a FP-12b 10 elevation 762'-0" APPENDIX E E3.5-i REV. 18, OCTOBER 2016

CPS/USAR 3.5 DIESEL-GENERATOR BUILDING 3.5.1 Fire Area D-1 ; Elevations 712 - 0 & 719 - 0 Division 3 Diesel Generator Fuel Tank Room Description The area is the Division 3 diesel-generator oil storage tank room. The floor area is 1571 ft2.

A plan view of this fire area is shown on Figures FP-8a and FP-9a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b and FP-9b. No safety-related cable trays are located in this fire area.

The floor is 36-inch minimum reinforced concrete with five 4-inch floor drains to a sump located in the area. The floor is not fire rated. The walls are 12-inch minimum reinforced concrete or 11-5/8-inch hollow concrete block. All walls except a portion of the south wall (which is not fire rated) are 3-hour fire rated. The ceiling is 20-inch minimum concrete. The ceiling is 3-hour fire rated. There is an open stair system up to elevation 719 foot 0 inch.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan that operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 3 diesel-generator oil storage tank, valve, and oil transfer pump are located in the area.

Combustible Materials Fuel Oil HVAC Materials Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection system is installed in this area. This area is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers (at elevation 719) and hose stations (at elevation 712) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.1 of the Safe Shutdown Analysis.

APPENDIX E E3.5-1 REV. 11, JANUARY 2005

CPS/USAR 3.5.2 Fire Area D-2; Elevations 712 -0 & 719 - 0 Division 1 Diesel Generator Fuel Tank Room Description The area is the Division 1 diesel-generator oil storage tank room. The floor area is 1985 ft2.

A plan view of this fire area is shown on Figures FP-8a and FP-9a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b and FP-9b. No safety-related cable trays are located in this fire area.

The floor is 9-foot minimum concrete with three 4-inch floor drains to a sump located within the area. The floor is not fire rated. The walls are 12-inch minimum reinforced concrete or 11-5/8-inch hollow concrete block. All walls except the south wall are 3-hour fire rated. The ceiling is 20-inch minimum reinforced concrete. The ceiling is 3-hour fire rated. There is an open stair system up to elevation 719 foot 0 inch.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan that operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 1 diesel-generator oil storage tank, oil transfer pump, fuel oil valve, and Division 1 instrumentation are located in the area.

Combustible Materials Fuel Oil HVAC Materials Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection system is installed in this area. This area is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers (at elevation 719) and hose stations (at elevation 712) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.2 of the Safe Shutdown Analysis.

APPENDIX E E3.5-2 REV. 11, JANUARY 2005

CPS/USAR 3.5.3 Fire Area D-3; Elevations 712 - 0 & 719 - 0 Division 2 Diesel Generator Fuel Tank Room Description The area is the Division 2 diesel-generator oil storage tank room. The floor area is 1340 ft2.

A plan view of this fire area is shown on Figures FP-8a and FP-9a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-8b and FP-9b. No safety-related cable trays are located in this fire area.

The floor is 9-foot minimum concrete with five 4-inch floor drains to a sump located within the zone. The floor is not fire rated. The walls are 12-inch minimum reinforced concrete or 11-5/8-inch hollow concrete block. All walls except the south wall are 3-hour fire rated. The ceiling is 20-inch minimum reinforced concrete. The ceiling is 3-hour fire rated. There is an open stair system up to elevation 719 foot 0 inch.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan that operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 2 diesel-generator oil storage tank, oil transfer and pump, fuel oil valve, and Division 2 instrumentation are located in the area.

Combustible Materials Fuel Oil HVAC Materials Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection is provided for this area. This area is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers (at elevation 719) and hose stations (at elevation 712) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.3 of the Safe Shutdown Analysis.

APPENDIX E E3.5-3 REV. 11, JANUARY 2005

CPS/USAR 3.5.4 Fire Area D-4 3.5.4.1 Fire Zone D-4a; Elevation 737 - 0 Division 3 Diesel Generator Room Description The zone is the Division 3 diesel-generator room. The floor area is 2751 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. Safety-related cable trays are shown on cable tray Figure 9.

The floor is 20-inch minimum reinforced concrete with seven 4-inch drains and one 3-inch trench drain. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch minimum hollow concrete block. The walls are 3-hour fire rated except the interior walls around D-4b, which are 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated.

During normal station operating conditions, the non-safety-related diesel-generator ventilation makeup supply unit furnishes outside air, conditioned by cooling coils or tempered by heating coils, to this room. The air is then staged to the day tank and oil tank rooms.

When the diesel-generator operates, the safety-related diesel-generator Division 3 ventilation system operates. This system supplies air to this room at a minimum of 65 F by mixing outside air with return air. The air is not only staged to the day tank and oil tank rooms but also directly exhausted from this room.

When the carbon dioxide fire protection system in this room activates, all ventilation fans stop.

Safety-Related Equipment Located within the zone are the following safety-related equipment: the Division 3 diesel-generator associated instrument and control panels and air start skid, Division 1 and 3 control panels, Division 3 heat exchanger valve, Division 3 diesel-generator start skid, and Division 3 cable trays. The post accident sampling cabinets are located in this zone.

Combustible Materials Lubricants Cable Insulation HVAC Materials Plastic, Rubber, Cloth and Paper Fuel Oil Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.5-4 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection This zone is protected by an automatic carbon dioxide fire suppression system actuated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.4 of the Safe Shutdown Analysis.

3.5.4.2 Fire Zone D-4b; Elevation 737 - 0 Division 3 Diesel Generator Day Tank Room Description The zone is the Division 3 diesel-generator oil day tank room. The floor area is 158 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. No safety-related cable trays are located in this fire zone.

The floor is 20-inch minimum reinforced concrete with one 3-inch trench drain and one 2-inch box drain. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch hollow concrete block. The north and west walls are 1.9-hour fire rated; the south and east walls are 3-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated. There is a 12-inch high concrete curb at the door and walls.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan which operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 3 diesel-generator oil day tank and Division 3 instruments are located in the zone.

Combustible Materials HVAC Materials Fuel Oil Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection system is provided for this zone. This zone is protected by an automatic wet pipe suppression system. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.5-5 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.4 of the Safe Shutdown Analysis.

3.5.5 Fire Area D-5 3.5.5.1 Fire Zone D-5a; 737 - 0 Division 1 Diesel Generator Room Description The zone is the Division 1 diesel-generator room. The floor area is 3616 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. Safety-related cable trays are shown on cable tray Figure 9.

The floor is 20-inch minimum reinforced concrete with eight 4-inch drains and four 3-inch trench drains. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch minimum hollow concrete block. The walls are 3-hour fire rated, except the interior walls around D-5b which are 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated.

During normal station operating conditions, the non-safety related diesel-generator ventilation makeup supply unit furnishes outside air, conditioned by cooling coils or tempered by heating coils, to this room. The air is then staged to the day tank and oil tank rooms.

When the diesel-generator operates, the safety-related diesel-generator Division 1 ventilation system operates. This system supplies air to this room at a minimum of 70°F by mixing outside air with return air. The air is not only staged to the day tank and oil tank rooms, but also directly exhausted from this room.

When the carbon dioxide fire protection system in this room actuates, all ventilation fans stop.

Safety-Related Equipment The following safety-related equipment are located within the fire zone: the Division 1 diesel-generator, associated instrument and control panels starting air skid, heat exchanger, oil cooler, expansion bank, cooling water pump and valve, Division 1 diesel-generator day tank room exhaust fan 1A, and Division 1 cable tray.

Combustible Materials Lubricants HVAC Materials Cable Insulation Fuel Oil Cloth, Rubber, Plastic and Paper Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.5-6 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection This zone is protected by an automatic carbon dioxide fire suppression system actuated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.5 of the Safe Shutdown Analysis.

3.5.5.2 Fire Zone D-5b; Elevation 737 - 0 Division 1 Diesel Generator Day Tank Room Description The zone is the Division 1 diesel-generator oil day tank room. The floor area is 160 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. No safety-related cable trays are located in this fire zone.

The floor is 20-inch minimum reinforced concrete with one 3-inch trench drain and one 2-inch box drain. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch hollow concrete blocks. The walls are 1.9-hour fire rated, except the south and west walls which are 3-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated. There is a 12-inch high concrete curb at the door and walls.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan which operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 1 diesel-generator oil day tank, Division 1 instrument cable, and Division 1 diesel-generator fuel oil valve are located in the zone.

Combustible Materials HVAC Materials Fuel Oil Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection system is installed in this zone. This zone is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual fire fighting as shown on the referenced drawings.

APPENDIX E E3.5-7 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.5 of the Safe Shutdown Analysis.

3.5.6 Fire Area D-6 3.5.6.1 Fire Zone D-6a; Elevation 737 - 0 Division 2 Diesel Generator Room Description The zone is the Division 2 diesel-generator room. The floor area is 2491 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. Safety-related cable trays are shown on cable tray Figure 9.

The floor is 20-inch minimum reinforced concrete with seven 4-inch drains and three 3-inch trench drains. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch minimum hollow concrete block. The walls are 3-hour fire rated, except the interior walls around D-6b, which are 1.9-hour fire rated. The ceiling is 12-inch minimum reinforced concrete and is 3-hour fire rated.

During normal station operating conditions, the non-safety-related diesel-generator ventilation makeup supply unit furnishes outside air, conditioned by cooling coils or tempered by heating coils, to this room. The air is then staged to the day tank and oil tank rooms.

When the diesel-generator operates, the safety-related diesel-generator Division 2 ventilation system operates. This system supplies air to this room at a minimum of 70°F by mixing outside air with return air. The air is not only staged to the day tank and oil tank rooms, but also directly exhausted from this room.

When the carbon dioxide fire protection system in this room activates, all ventilation fans stop.

Safety-Related Equipment The following safety-related equipment are located within the fire zone: the Division 2 diesel-generator, associated instrument and control panels, starting air compressor skid, cooling water pump and valve, heat exchanger, oil cooler, expansion tank, Division 2 diesel-generator day tank room exhaust fan 1B, and Division 2 cable trays.

Combustible Materials Lubricants HVAC Materials Cable Insulation Plastic, Rubber, Cloth and Paper Fuel Oil Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.5-8 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection This zone is protected by an automatic carbon dioxide fire suppression system actuated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.6 of the Safe Shutdown Analysis.

3.5.6.2 Fire Zone D-6b; Elevation 737 - 0 Division 2 Diesel Generator Day Tank Room Description The zone is the Division 2 diesel-generator oil day tank room. The floor area is 125 ft2.

A plan view of this fire zone is shown on Figure FP-10a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-10b. No safety-related cable trays are located in this fire zone.

The floor is 20-inch reinforced concrete with one 3-inch trench drain and one 2-inch box drain.

The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete or 7-5/8-inch hollow concrete block. The walls are 1.9-hour fire rated except for the south and west walls which are 3-hour fire rated. The ceiling is 12-inch reinforced concrete and is 3-hour fire rated.

There is a 12-inch high concrete curb at the door and walls.

Air is staged to this room from the diesel-generator room under all plant conditions. The air is exhausted from this room by a safety-related exhaust fan which operates under all plant conditions.

When the carbon dioxide fire protection system in the diesel-generator room actuates, all ventilation fans stop.

Safety-Related Equipment The Division 2 diesel-generator oil day tank and Division 2 diesel-generator fuel oil valve are located in the zone.

Combustible Materials HVAC Materials Fuel Oil Fire Load The fire load for the fire zone is high.

Fire Detection and Protection An ionization fire detection system is installed in this zone. The zone is protected by an automatic wet sprinkler system. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.5-9 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.4.6 of the Safe Shutdown Analysis.

3.5.7 Fire Area D-7; Elevation 762 - 0 Division 3 Diesel Generator HVAC Room Description The area is the Division 3 diesel-generator ventilation fan room. The floor area is 1041 ft2.

A plan view of this fire area is shown on Figure FP-12a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-12b. No safety-related cable trays are located in this fire area.

The floor is 12-inch minimum reinforced concrete with three 4-inch floor drain. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete. The walls are 3-hour rated except the south wall which is not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

The diesel-generator ventilation fan supplies outside air to the diesel-generator room, the day tank room, and the oil storage tank room. This vane axial fan operates automatically whenever the diesel-generator receives a start signal. The diesel-generator room ventilation system operates to maintain a controlled ambient temperature range in conformance with equipment temperature ratings and requirements for the modes of operation.

Safety-Related Equipment The safety-related equipment located within the fire area are the Division 3 diesel-generator ventilation fan and panel and Division 2 power cables.

Combustible Materials Lubricants Cable Insulation Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire area for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.7 of the Safe Shutdown Analysis.

APPENDIX E E3.5-10 REV. 11, JANUARY 2005

CPS/USAR 3.5.8 Fire Area D-8; Elevation 762 - 0 Division 1 Diesel Generator HVAC Room Description The area is the Division 1 diesel-generator ventilation fan room. The floor area is 1268 ft2.

A plan view of this fire area is shown on Figure FP-12a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-12b. No safety-related cable trays are located in this fire area.

The floor is 12-inch minimum reinforced concrete with three 4-inch floor drain. The floor is 3-hour fire rated. The walls are 12-inch minimum reinforced concrete. The walls are 3-hour fire rated except the south wall which is not fire rated. The ceiling is 24-inch minimum reinforced concrete and is not fire rated.

The diesel-generator ventilation fan supplies outside air to the diesel-generator room, day tank room, and oil storage tank room.

This vane axial fan operates automatically whenever the diesel-generator receives a start signal. The diesel-generator room ventilation system operates to maintain a controlled ambient temperature range in conformance with equipment temperature ratings and requirements for the modes of operation.

Safety-Related Equipment The safety-related equipment located within the fire area are the Division 1 diesel-generator ventilation fan and panel and Division 2 power cables.

Combustible Materials Lubricants HVAC Materials Cable Insulation Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Thermal detectors are installed in the area of the Division 2 power cables. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.8 of the Safe Shutdown Analysis.

APPENDIX E E3.5-11 REV. 11, JANUARY 2005

CPS/USAR 3.5.9 Fire Area D-9; Elevation 762 - 0 Division 2 Diesel Generator HVAC Room Description The area is the Division 2 diesel-generator ventilation fan room. The floor area is 856 ft2.

A plan view of this fire area is shown on Figure FP-12a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-12b. No safety-related cable trays are located in this fire area.

The floor is 12-inch minimum reinforced concrete with three 4-inch floor drains. The floor is 3-hour fire rated. The walls are 12-inch minimum concrete. The walls are 3-hour fire rated except the south wall which is not fire rated. The ceiling is 24-inch minimum concrete and not fire rated.

The diesel-generator ventilation fan supplies outside air to the diesel-generator room, day tank room, and oil storage tank room. This vane axial fan operates automatically whenever the diesel-generator receives a start signal. The diesel-generator room ventilation system operates to maintain a controlled ambient temperature range in conformance with equipment temperature ratings and requirements for the modes of operation.

Safety-Related Equipment The safety-related equipment located within the fire area are the Division 2 diesel-generator ventilation fan and panel and Division 2 power cables.

Combustible Materials Lubricants Cable Insulation HVAC Materials Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.9 of the Safe Shutdown Analysis.

3.5.10 Fire Area D-10; Elevation 762 - 0 General Access and HVAC Area Description This fire area is a general access area and an area containing heating, ventilating, and air-conditioning equipment for the diesel-generator building. There are also three areas (former APPENDIX E E3.5-12 REV. 11, JANUARY 2005

CPS/USAR Unit 2 diesel-generator ventilation fan rooms) which are used for toolbox maintenance activities and houses the FLEX Diesel Generator. The floor area is 14,917 ft2.

A plan view of this fire area is shown on Figure FP-12a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-12b. No safety-related cable trays are located in this fire area.

The floor is 12-inch minimum reinforced concrete and is 3-hour fire rated. There are thirty-one 4-inch floor drains. The walls are 12-inch minimum reinforced concrete. The north, west, and the walls common to Fire Areas D-7, D-8, and D-9, and Fire Zone CB-1f are 3-hour fire rated.

The remaining walls are not fire rated. The diesel-generator exhaust stack walls are 12-inch concrete and are 3-hour fire rated. The ceiling is 24-inch reinforced concrete and is not fire rated.

Safety-Related Equipment Building exhaust fans A and B are located in this area. Safety-related Divisions 1, 2, and 3 damper actuators are located in this area.

Combustible Materials Lubricants HVAC Materials Cable Insulation Plastic, Rubber, Cloth, Paper and Wood Diesel Fuel for the FLEX Diesel Generator (contained in a double wall tank)

Fire Load The fire load for the fire zone is low.

Fire Detection and Protection An ionization fire detection system is provided throughout the HVAC equipment area. An automatic wet pipe sprinkler system has been installed to cover 10 feet on both sides of Column 129 from Row AC to AF. An automatic wet pipe sprinkler system is installed to cover the Unit 2 DG Ventilation Room (containing the FLEX Diesel Generator) between Rows AG and AF and Columns 132 and 133.6. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.4.10 of the Safe Shutdown Analysis.

APPENDIX E E3.5-13 REV. 18, OCTOBER 2016

CPS/USAR FUEL BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing F-1 F-1a General Access Area - E3.6-1 FP-2a FP-2b 2 elevation 712'-0" F-1b HPCS Pump Room elevation E3.6-2 FP-2a FP-2b 2 712'-0" F-1c Floor Drain Sump Room - E3.6-3 FP-2a FP-2b -

elevation 712'-0" F-1d Floor Drain Pump Room - E3.6-3 FP-2a FP-2b -

elevation 712'-0" F-1e Equipment Drain Tank Room - E3.6-4 FP-2a FP-2b -

elevation 712'-0" F-1f Equipment Drain Pump Room - E3.6-5 FP-2a FP-2b -

elevation 712'-0" F-1g Fuel Cask Area Pump Room - E3.6-6 FP-2a FP-2b -

elevation 712'-0" F-1h Valve Room - elevation 712'-0" E3.6-6 FP-2a FP-2b -

F-1i Fuel Pool Cooling Pump room - E3.6-7 FP-2a FP-2b -

elevation 712'-0" F-1j Personnel Change Room - E3.6-8 FP-3a FP-3b -

elevation 737'-0" F-1k Workshop and Storage Vault - E3.6-9 FP-3a FP-3b -

elevation 737'-0" F-1m General Access Area - E3.6-10 FP-3a FP-3b 3 elevation 737'-0" F-1n Fuel Pool Heat Exchanger E3.6-11 FP-3a FP-3b -

Room - elevation 737'-0" F-1o Radwaste Pipe Tunnel - E3.6-11 FP-3a FP-3b -

elevation 737'-0" F-1p Fuel Pools and General Access E3.6-12 FP-2a FP-2b -

- elevations 712'-0", 737'- 0", FP-3a FP-3b -

755'-0", 781'-0" FP-4a FP-4b 4 FP-5a FP-5b 5 APPENDIX E E3.6-i REV. 18, OCTOBER 2016

CPS/USAR 3.6 FUEL BUILDING 3.6.1 Fire Area F-1 3.6.1.1 Fire Zone F-1a; Elevation 712' - 0" General Access Area Description The zone consists of the drywell chillers, drywell water chiller pumps, and the gamma scanner room. The floor area is 8640 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. Safety-related cable trays are shown on cable tray Figure 2.

The floor is 9-foot 8-inch minimum concrete with nineteen 4-inch floor drains. The floor is not fire rated. The walls are 24-inch minimum concrete. The walls adjacent to the containment building, service building, auxiliary building, and diesel-generator building are 3-hour fire rated.

The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete and is not fire rated. There are two stair systems in this zone: one enclosed stair with 1.9-hour fire rated walls and one open stair, both up to elevation 755 feet 0 inch.

Conditioned ventilation air is supplied to this zone through the fuel building HVAC system supply ductwork. A portion of the supplied air is staged unducted through backdraft dampers to various cubicles where it is exhausted through the fuel building HVAC system exhaust ductwork. The balance of the air is staged unducted through the stairs to elevation 737 feet general area (Fire Zone F-1m). Area coolers (supplied by the plant chilled water system) in this area will recirculated air within this zone.

Safety-Related Equipment Division 1, 2, and 3 control panels, Division 2 cable trays, and Division 2 valves are located in this zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection An ionization fire detection system is provided for this zone. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.6-1 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.2 Fire Zone F-1b; Elevation 712 - 0 HPCS Pump Room Description The zone consists of the ECCS floor drain sump, HPCS water leg pump, HPCS pump, HPCS instrument panel, and two HPCS pump room fan-coil units. The floor area is 1722 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. Safety-related cable trays are shown on cable tray Figure 2.

The floor is 9-foot 8-inch minimum concrete with two 4-inch floor drains to a sump located within the zone. The floor is not fire rated. The walls are 24-inch minimum concrete. The containment wall, north wall, and west wall are 3-hour fire rated. The remaining walls are not rated. The ceiling is 12-inch minimum concrete with areas of removable concrete slabs. The ceiling is not fire rated.

This zone has two safety-related fan-coil units that recirculate air for room cooling. A small quantity of air from the adjacent fuel building general area (Zone F-1a) is infiltrated into this zone by exhausting air from the zone through the standby gas treatment system (SGTS) piping, which has an exhaust flow path to the fuel building HVAC exhaust system.

Safety-Related Equipment HPCS water leg pump, HPCS pump, HPCS pump room fan-coil units, HPCS instrument panel, Division 3 cable trays, and Division 2 instrumentation are located in this zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system located in the zone. Portable fire extinguishers (in the zone) and hose stations (in an adjacent fire zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

APPENDIX E E3.6-2 REV. 11, JANUARY 2005

CPS/USAR 3.6.1.3 Fire Zone F-1c; Elevation 712 - 0 Floor Drain Sump Room Description The zone consists of the fuel building floor drain sump, fuel building floor drain tank, and the fuel building equipment drain sump. The floor area is 361 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete with one equipment drain sump and one floor drain sump in the zone. The floor is not fire rated. The walls are 24-inch minimum concrete or 27-5/8-inch solid concrete block. The containment wall is 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on the elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.4 Fire Zone F-1d; Elevation 712 0 Floor Drain Pump Room Description The zone consists of the fuel building floor drain pumps. The floor area is 194 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone. The floor is 9-foot 8-inch minimum concrete and is not fire rated. The walls are 24-inch concrete or 15 5/8-inch minimum solid concrete block.

The walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

APPENDIX E E3.6-3 REV. 11, JANUARY 2005

CPS/USAR Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.5 Fire Zone F-1e; Elevation 712 - 0 Equipment Drain Tank Room Description The zone consists of the fuel building equipment drain tank. The floor area is 295 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete and is not fire rated. The walls are 24-inch minimum concrete or 27-5/8-inch solid concrete block. The containment wall is a 3-hour fire rated wall.

The remaining walls are not fire rated. The ceiling is 24-inch minimum concrete with an open hatch and is not fire rated.

Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber APPENDIX E E3.6-4 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.6 Fire Zone F-1f; Elevation 712 - 0 Equipment Drain Pump Room Description The zone consists of the fuel building equipment drain pumps. The floor area is 168 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete and is not fire rated. The wall is 24-inch minimum concrete or 27 5/8-inch solid concrete blocks. The north wall and the containment building wall are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.6-5 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.7 Fire Zone F-1g; Elevation 712 - 0 Fuel Cask Area Pump Room Description The zone consists of fuel cask area pump. The floor area is 357 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete and is not fire rated. The wall is 24-inch minimum concrete or 19-5/8-inch solid concrete block. The walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.8 Fire Zone F-1h; Elevation 712 - 0 Valve Room Description The zone consists of a valve room. The floor area is 343 ft2.

APPENDIX E E3.6-6 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch thick minimum concrete with one 4-inch floor drain discharging into a sump in fire area. The floor is not fire rated. The walls are 24-inch minimum concrete or 27-5/8-inch solid concrete block. The walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment A Division 1 valve is located in the zone.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.9 Fire Zone F-1i; Elevation 712 - 0 Fuel Pool Cooling Pump Room Description The zone consists of the fuel pool cooling and cleanup pump rooms. The floor area is 606 ft2.

A plan view of this fire zone is shown on Figure FP-2a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-2b. No safety-related cable trays are located in this fire zone.

The floor is 9-foot 8-inch minimum concrete. The floor is not fire rated. The walls are 36-inch minimum concrete or 19-3/8-inch minimum solid concrete block. The walls are not fire rated.

The ceiling is 24-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork. Area coolers, supplied by the plant chilled water system, will recirculate air within this zone.

APPENDIX E E3.6-7 REV. 11, JANUARY 2005

CPS/USAR Safety-Related Equipment Division 1 and 2 instruments, Division 1 and 2 area coolers, and Division 1 and 2 fuel pool cooling and cleanup pumps are located in this area.

Combustible Materials Lubricants HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.10 Fire Zone F-1j; Elevation 737 - 0 Personnel Change Room Description The zone consists of the personnel change room. The floor area is 243 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP 3b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum concrete and is not fire rated. There are two 4-inch floor drains.

The walls are 24-inch minimum concrete or 23-5/8-inch minimum solid concrete block. The walls are not fire rated. The ceiling is 18-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation (Zone F-1m) through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

APPENDIX E E3.6-8 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.11 Fire Zone F-1k; Elevation 737 - 0 Workshop and Storage Vault Description The zone consists of a workshop and storage vault. The floor area is 917 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone. The floor is 12-inch minimum concrete with hatchways. The floor is not fire rated. There is one 4-inch floor drain. The walls are 12-inch minimum concrete or 11-5/8-inch minimum solid concrete block. The containment wall is a 3-hour fire rated wall. The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete and is not fire rated.

Air is staged unducted from the general area on this elevation (Zone F-1m) through a backdraft damper and then exhausted through the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials Lubricants Plastic, Cloth, and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

APPENDIX E E3.6-9 REV. 11, JANUARY 2005

CPS/USAR 3.6.1.12 Fire Zone F-1m; Elevation 737 - 0 General Access Area Description The zone consists of the general area of this elevation of the fuel building and contains the RCIC storage tank instrument panels, the fuel building motor control centers, and the railroad track. The floor area is 12057 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. Safety-related cable trays are shown on cable tray Figure 3.

The floor is 12-inch minimum concrete with twenty eight 4-inch floor drains, removable concrete slabs, and an open stair. The floor is not fire rated. The walls are 15-inch minimum concrete or 11-5/8-inch minimum solid concrete block. Walls adjacent to the auxiliary building, containment building, diesel-generator building, and service building are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete with areas of removable concrete slabs and steel grating. The ceiling is not fire rated. There are two stair systems in this zone: one enclosed stair with 1.9-hour fire rated walls and one open stair both going up to elevation 755 feet 0 inch and down to elevation 712 feet 0 inch.

Conditioned ventilation air is supplied to this zone through the fuel building HVAC system supply ductwork. Supply air is mixed with staged air from elevation 712 feet in the fuel building (Zone F-1a). Most of the mixed air is staged unducted through the stairs to elevation 755 feet general area (Zone F-1p). The balance of the air is staged unducted through backdraft dampers to various cubicles, where it is exhausted through the fuel building HVAC system exhaust ductwork. Area coolers (supplied by the plant chilled water system) in this area will recirculate air within this zone.

Safety-Related Equipment Division 1 control panel, RCIC storage tank instrument panels, Division 1 and 2 valves, and Division 1, 2, and 3 cable trays are located in the zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection An ionization fire detection system is installed in this zone. The railroad bay is protected by an automatic preaction sprinkler system activated by thermal detectors and linear thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.6-10 REV. 17, OCTOBER 2015

CPS/USAR Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.13 Fire Zone F-1n; Elevation 737 - 0 Fuel Pool Heat Exchanger Room Description The zone consists of the fuel pool heat exchangers A and B. The net floor area is 1456 ft2.

A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum concrete and is not fire rated. There is one 4-inch floor drain. The walls are 24-inch minimum concrete or 23-5/8-inch minimum solid concrete block. The walls are not fire rated. The ceiling is 24-inch minimum concrete and is not fire rated.

Most air is staged unducted from the general area on this elevation (Zone F-1m) through backdraft dampers and then exhausted through the fuel building HVAC system exhaust ductwork. Some air is staged unducted from the pipe tunnel (Zone F-1o) elevation 737 feet.

Safety-Related Equipment Fuel pool heat exchanger A, fuel pool heat exchanger B, and Division 1 and 2 valves are located in this zone.

Combustible Materials Lubricants HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Sub section 3.5.1 of the Safe Shutdown Analysis.

3.6.1.14 Fire Zone F-1o; Elevation 737 - 0 Radwaste Pipe Tunnel Description The zone consists of the pipe tunnel. The floor area is 878 ft2.

APPENDIX E E3.6-11 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-3a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-3b. No safety-related cable trays are located in this fire zone.

The floor is 12-inch concrete and is not fire rated. There are eight 4-inch floor drains. The walls are 12-inch minimum reinforced concrete. The walls adjacent to the diesel and auxiliary buildings are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete and is not fire rated.

Conditioned ventilation air is supplied to this zone through the fuel building HVAC system supply ductwork. The exhaust air is staged unducted through a backdraft damper to the fuel pool heat exchanger B area (Zone F-1n) where it is exhausted by the fuel building HVAC system exhaust ductwork.

Safety-Related Equipment None.

Combustible Materials Lubricants Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

3.6.1.15 Fire Zone F-1p; Elevations 712 -0, 737 - 0 and 755 - 0 & 781 - 0 Fuel Pools and General Access Description This zone consists of the lower portions of the spent fuel storage pool, the fuel transfer pool, and the fuel cask storage pool. This zone is analyzed in two parts. Since the 712 0 elevation is under water it is not considered. First, the 737 - 0 elevation, the fuel cask washdown area; and second, 755 - 0 & 781 - 0 elevations. The floor areas are 375 ft2 and 22,571 ft2 respectively.

A plan view of this fire zone is shown on Figures FP-2a through FP-5a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-2b through FP-5a. Safety-related cable trays are located in this fire zone as shown on cable tray Figures 4 and 5.

APPENDIX E E3.6-12 REV. 11, JANUARY 2005

CPS/USAR At elevation 712 - 0 the floor is 9-foot 8-inch reinforced concrete and is not fire rated. The walls are 36 inch minimum reinforced concrete and are not fire rated. There are eight 2-1/2-inch leak detection drains in this zone.

At elevation 737 - 0 the floor is 36-inch reinforced concrete and is not fire rated. There are three 4-inch floor drains. The walls are 24-inch minimum reinforced concrete and are not fire rated. Nearly all of this portion of the zone is open to elevation 755 feet 0 inch. Small ceiling areas are of 1/4-inch aluminum checkered plate which are not fire rated.

At elevation 755' - 0" the floor is 12-inch minimum concrete with twenty 4-inch floor drains and four 8-inch by 8-inch by 4-inch box drains, removable concrete slabs, open hatches, steel grating, and open stairwell. The floor is not fire rated. The walls are 24-inch minimum concrete.

The walls adjacent to the containment building, auxiliary building, service building, and diesel generator building are 3-hour fire rated. An enclosed stairwell has 1.9-hour fire rated walls. A portion of the ceiling at elevation 781 feet 0 inch is 8-inch concrete on steel decking. The remainder is the fuel building roof.

At elevation 781' - 0" the floor is 8-inch concrete on steel decking and is not fire rated. There are eight 4-inch floor drains. The walls are 24-inch reinforced concrete. The north wall including containment is 3-hour fire rated and the walls adjacent to the auxiliary building, service building, and diesel generator building are 3-hour fire rated; the remaining walls are not fire rated. The ceiling is the fuel building roof and is 24-inch minimum concrete on steel decking and not fire rated.

Conditioned ventilation air is supplied to this zone by the fuel building HVAC system supply ductwork. Supply air is mixed with outside air and with staged air from elevation 737 feet (Zone F-1m) in the fuel building. Mixed air is then exhausted by the fuel building HVAC exhaust system ductwork through pickup points around the periphery of the fuel cask washdown, fuel cask storage, fuel transfer, and spent fuel storage pools.

Safety-Related Equipment Division 2 and 3, SRM/IRM pre-amp panels, electrical containment penetrations, Division 1, 2, and 3 cable trays, Division 1 and 2 power cable in conduit, fuel pool cooling and cleanup surge tanks, Division 1 and 2 valves, Division 1 and 2 area coolers and heaters, and Division 2 dampers are located in this zone.

Combustible Materials Lubricants Cable Insulation HVAC Material Flammable Liquids Plastic, Cloth and Rubber Fire Load The fire load for the fire zone at elevation 737' is low.

The fire load for the fire zone at elevations 755' and 781' is low.

APPENDIX E E3.6-13 REV. 14, JANUARY 2011

CPS/USAR Fire Detection and Protection There is an ionization fire detection system located in the zone at elevations 755 and 781.

Portable fire extinguishers and hose stations are provided at elevations 755 and 781 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.5.1 of the Safe Shutdown Analysis.

APPENDIX E E3.6-14 REV. 11, JANUARY 2005

CPS/USAR CIRCULATING WATER SCREEN HOUSE FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing M-1 - Division 1 Shutdown Service E3.7-1 FP-25a FP-25b -

Water Pump Room - elevation 699'-0" M-2 M-2a Division 3 Shutdown Service E3.7-2 FP-25a FP-25b -

Water Pump Room - elevation 699'-0" M-2b Division 2 Shutdown Service E3.7-2 FP-25a FP-25b -

Water Pump Room - elevation 699'-0" M-2c Screen House and Tunnel - E3.7-3 FP-25a FP-25b -

elevations 657'-6", 678'-0", FP-26a 22 699'-0" M-3 - Fire Pump B Room - elevation E3.7-4 FP-25a FP-25b -

699'-0" M-4 - Fire Pump A Room - elevation E3.7-5 FP-25a FP-25b -

699'-0" APPENDIX E E3.7-i REV. 18, OCTOBER 2016

CPS/USAR 3.7 CIRCULATING WATER SCREEN HOUSE 3.7.1 Fire Area M-1; Elevation 699 - 0 Division 1 Shutdown Service Water Pump Room Description The area consists of a room containing the Division 1 shutdown service water (SSW) pump, SSW strainer, SSW cooling unit, and the SSW motor control center. The floor area is 893 ft 2.

A plan view of this fire area is shown on Figure FP-25a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire area.

The floor is 24-inch minimum reinforced concrete with two 4-inch floor drains to a sump located within the area. The floor is 3-hour fire rated. The walls are 24-inch reinforced concrete and are 3-hour rated except for the north wall which is not fire rated. The ceiling is 18-inch minimum concrete with removable concrete slabs and is 3-hour fire rated.

Air is supplied to this room unducted from the circulating water screenhouse HVAC system and is returned unducted to the circulating water screenhouse HVAC system. Air is recirculated in this room by a safety-related cooler.

Safety-Related Equipment The SSW motor control center 1A, SSW pump 1A room fan-coil unit, SSW pump 1A, SSW pump strainer 1A, and Division 1 valves are located in this area.

Combustible Materials Lubricants Cable Insulation Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in the area. Portable fire extinguishers (in the zone) and hose stations (in an adjacent zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.6.1 of the Safe Shutdown Analysis.

APPENDIX E E3.7-1 REV. 11, JANUARY 2005

CPS/USAR 3.7.2 Fire Area M-2 3.7.2.1 Fire Zone M-2a; Elevation 699 - 0 Division 3 Shutdown Service Water Pump Room Description The zone consists of a room containing the Division 3 shutdown service water (SSW) pump, SSW strainer, SSW cooling unit, and the SSW motor control center. The floor area is 598 ft2.

A plan view of this fire zone is shown on Figure FP-25a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum reinforced concrete with two 4-inch floor drains to a sump located within the zone. The floor is not fire rated. The walls are 24-inch reinforced concrete and are not fire rated. The ceiling is 18-inch reinforced concrete with removable concrete slabs and is not fire rated.

Air is supplied to this room ducted from the circulating water screen house HVAC system and is returned unducted to the circulating water screen house HVAC system. Air is recirculated in this room by a safety-related cooler.

Safety-Related Equipment The SSW motor control center 1C, SSW pump 1C room fan-coil unit, SSW pump 1C, SSW strainer 1C, and Division 3 valves are located in this zone.

Combustible Materials Lubricants Cable Insulation Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in this zone. Portable fire extinguishers (in the zone) and hose stations (in an adjacent zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.6.1 of the Safe Shutdown Analysis.

3.7.2.2 Fire Zone M-2b; Elevation 699 - 0 Division 2 Shutdown Service Water Pump Room Description The zone consists of a room containing the Division 2 shutdown service water (SSW) pump, SSW strainer, SSW cooling unit, and the SSW motor control center. The floor area is 893 ft2.

APPENDIX E E3.7-2 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-25a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire zone.

The floor is 30-inch minimum reinforced concrete with two 4-inch floor drains to a sump located within the zone. The floor is not fire rated. The walls are 24-inch reinforced concrete and are not fire rated, except for the north wall which is 3-hour fire rated. The ceiling is 18-inch reinforced concrete with removable concrete slabs and is not fire rated.

Air is supplied to this room ducted from the circulating water screen house HVAC system and is returned unducted to the circulating water screen house HVAC system. Air is recirculated in this room by a safety-related cooler.

Safety-Related Equipment The SSW motor control center 1B, SSW pump 1B room fan-coil unit, SSW pump 1B, SSW strainer 1B, and Division 2 valves are located in this zone.

Combustible Materials Lubricants Cable Insulation Fire Load The fire load for the fire zone is low.

Fire Detection and Protection There is an ionization fire detection system in this zone. Portable fire extinguishers (in the zone) and hose stations (in an adjacent zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.6.2 of the Safe Shutdown Analysis.

3.7.2.3 Fire Zone M-2c ; Elevations 657 - 0, 678 - 0, & 699 - 0 Screen House and Tunnel Description This zone consists of the circulating water screen house and the below-grade pipe tunnel. The total floor area is 15,177 ft2.

A plan view of this fire zone is shown on Figure FP-25a and FP-26a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum concrete with nine 4-inch floor drains. The floor is not fire rated, except for the floor of Fire Zone M-1 which is 3-hour fire rated. Walls are 24-inch reinforced concrete, 11-5/8-inch hollow concrete block, or 3-1/2-inch insulated metal siding. Walls adjacent to Fire Areas M-4 and M-1 are 3-hour fire rated. Other walls are unrated.

APPENDIX E E3.7-3 REV. 13, JANUARY 2009

CPS/USAR Ceilings are 3-1/2-inch precast concrete channel slabs, 8-inch concrete on steel decking or 18-inch reinforced concrete. The ceilings are not fire rated, except for the ceiling under Fire Zones M-4 which is 3-hour fire rated.

This zone contains service water pumps, strainers, traveling screens, chlorinators, and related service water system components. Air is supplied to the general area from the circulating water screen house ventilation supply fans and outside air towers. Air is exhausted from this area through roof exhaust fans. The pipe tunnel is supplied air-ducted from the circulating water screen house ventilation system. Air is returned unducted to the general screen house area.

Safety-Related Equipment Cables and valves are located below elevation 699 feet.

Combustible Materials Lubricants Cable Insulation HVAC Materials Paper, Plastic and PVC Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire zone, safe shutdown can be achieved as discussed in Subsection 3.6.2 of the Safe Shutdown Analysis.

3.7.3 Fire Area M-3; Elevation 699 - 0 Fire Pump B Room Description The area consists of a room containing the diesel-driven fire pump B, diesel fire pump day tank, and the fire pump control panel. The floor area is 440 ft2.

A plan view of this fire area is shown on Figure FP-25a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire area.

The floor is 24-inch reinforced concrete with two 4-inch floor drains. Below is the pump intake bay. The floor is not fire rated. The walls consist of 11-5/8-inch hollow concrete block and are not fire rated. The ceiling is 8-inch concrete on steel decking and is not fire rated.

Air is supplied to this room through outside air louvers. Air is exhausted from this room through roof exhaust fans.

APPENDIX E E3.7-4 REV. 11, JANUARY 2005

CPS/USAR Safety-Related Equipment None.

Combustible Materials Lubricants Fuel Oil Cable Insulation Rubber Fire Load The fire load for the fire zone is high.

Fire Detection and Protection There is an automatic wet pipe fire suppression system located in the area. Portable fire extinguishers (inside the zone) and hose stations (outside the zone door) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.6.3 of the Safe Shutdown Analysis.

3.7.4 Fire Area M-4; Elevation 699 - 0 Fire Pump A Room Description The area consists of a room containing the diesel-driven fire pump A, diesel fire pump day tank, and the fire pump control panel. The floor area is 404 ft2.

A plan view of this fire area is shown on Figure FP-25a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-25b. No safety-related cable trays are located in this fire area.

The floor is 24-inch reinforced concrete with two 4-inch floor drains. The floor is 3-hour fire rated. The walls are 24-inch reinforced concrete or 11-5/8-inch hollow concrete block. The walls are 3-hour fire rated, except for the exterior wall which is not fire rated. The ceiling is 8-inch concrete on steel decking with fireproofed structural steel and is 3-hour fire rated.

Air is supplied to this room by the circulating water screen house HVAC system outside air louver. It leaves the room through a roof exhaust fan.

Safety-Related Equipment None.

APPENDIX E E3.7-5 REV. 11, JANUARY 2005

CPS/USAR Combustible Materials Lubricants Fuel Oil Cable Insulation Fire Load The fire load for the fire zone is high.

Fire Detection and Protection There is an automatic wet pipe fire suppression system located in the area. Portable fire extinguishers and hose stations are provided in an adjacent zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire In the event of a fire in this fire area, safe shutdown can be achieved as discussed in Subsection 3.6.4 of the Safe Shutdown Analysis.

APPENDIX E E3.7-6 REV. 11, JANUARY 2005

CPS/USAR RADWASTE BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing R-1 R-1a Makeup Demineralizer System E3.8-1 FP-16a FP-16b 14 Room - elevation 702'-0" FP-17a FP-17b 15 R-1b Charcoal Adsorber Vault - E3.8-2 FP-16a FP-16b -

elevation 702'-0" FP-17a FP-17b -

R-1c General Access Area - E3.8-3 FP-16a FP-16b 14 elevations 702'-0", 720'-6" FP-17a FP-17b 15 R-1d Radwaste Floor Drain E3.8-4 FP-16a FP-16b -

Collector Tank Room elevation FP-17a FP-17b -

702'-0" R-1e Phase Separator Tank Room - E3.8-5 FP-16a FP-16b -

elevation 702'-0" FP-17a FP-17b -

R-1f Waste Tank Room - elevation E3.8-6 FP-16a FP-16b -

702'-0" FP-17a FP-17b -

R-1g Chemical Waste Tank Room - E3.8-7 FP-16a FP-16b -

elevation 702'-0" FP-17a FP-17b -

R-1h General Access Area - E3.8-7 FP-17a FP-17b 15 elevation 720-6" R-1i General Access Area and E3.8-9 FP-18a FP-18b 16 Shops - elevation 737'-0" R-1j Dry Active Waste Baler Room E3.8-10 FP-18a FP-18b -

- elevation 737'-0" R-1k Clean and Dirty Oil Storage E3.8-11 FP-18a FP-18b -

Room - elevation 737'-0" R-1m Weld Shop and Storeroom - E3.8-12 FP-18a FP-18b 16 elevation 737'-0" R-1n Paint and Oil Storage Room - E3.8-13 FP-18a FP-18b -

elevation 737'-0" R-1o Radwaste Operation Center - E3.8-14 FP-18a FP-18b 16 elevation 737'-0" APPENDIX E E3.8-i REV. 18, OCTOBER 2016

CPS/USAR RADWASTE BUILDING, Cont.

FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing R-1p General Access and Shops - E3.8-15 FP-19a FP-19b 17 elevation 762'-0" and 783-6 Elevator Hoistway R-1q Miscellaneous Equipment E3.8-16 FP-19a FP-19b 17 Area - elevation 762'-0" and 784-6 Elevator Hoistway R-1r Contractor Staging Area - E3.8-17 FP-19a FP-19b 17 elevation 762'-0" R-1s Radwaste HVAC Room - E3.8-18 FP-19a FP-19b 17 elevation 762'-0" R-1t General Access Corridor - E3.8-19 FP-13a FP-13b -

elevation 781'-0" and 800-0 Elevator Access Corridor and Airlocks from Control to Cable Tunnel Roof, and 821-6 Elevator Motor Room and Instrument Room R-1u Calibration Lab - elevation E3.8-20 FP-13a FP-13b -

781'-0" APPENDIX E E3.8-ii REV. 18, OCTOBER 2016

CPS/USAR 3.8 RADWASTE BUILDING 3.8.1 Fire Area R-1 3.8.1.1 Fire Zone R-1a; Elevation 702 - 0 Makeup Demineralizer System Room Description This zone contains the makeup demineralizer system, with a floor area of 6688 ft2.

Compressed hydrogen gas lines pass through this fire zone to supply the main generator hydrogen system and the hydrogen water chemistry system.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

Floors are 108-inch reinforced concrete and are not fire rated. Walls are 36-inch concrete or 11-5/8-inch hollow concrete block and are not fire rated. The ceiling at elevation 737 is 24-inch minimum concrete and is not fire rated, except for the portion below Zone R-1k which is 3-hour fire rated. The ceiling at elevation 725 is 16-inch minimum concrete and is not fire rated. There are thirteen 4-inch floor drains and five 12 x 12-inch box drains. A portion of the zone extends vertically from elevation 702 feet 0 inch to elevation 737 feet 0 inch.

Safety-Related Equipment None.

Radiological Materials The demineralizers process Clinton Lake water to create clean makeup water. As such, there is no radiological material present.

Combustible Materials Lubricants Cable Insulation Paper, Plastic, Cloth and Rubber Hydrogen (compressed)

Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

APPENDIX E E3.8-1 REV. 15, JANUARY 2013

CPS/USAR 3.8.1.2 Fire Zone R-1b; Elevation 702 - 0 Charcoal Adsorber Vault Description This fire zone houses the charcoal adsorber units. The floor area is 616 ft2.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch concrete and is not fire rated. The walls are 36-inch concrete or 11-5/8-inch minimum solid concrete block, and are 3-hour fire rated. The ceiling is 40-inch concrete, and is not fire rated. There is one 4-inch floor drain in this zone. The zone extends vertically from elevation 702 feet 0 inch to elevation 737 feet 0 inch.

Safety-Related Equipment None.

Radiological Materials The charcoal adsorbers process radioactive off-gases and contain radioactive material.

No credible hypothetical fires in the off-gas system could produce doses to the public above those calculated using very conservative assumptions. The charcoal vessel volume is 5 feet in diameter and 20 feet long. However, in the event a fire should occur, a very conservative analysis would assume a release of 100% of the iodine from a fire in the first charcoal bed (this also conservatively assumes the loss of function of the subsequent charcoal beds), and 100%

of the noble gas source term passes through the station exhaust stack. The off-gas system charcoal beds are in steel vessels. However, in the unlikely event that the system integrity is not maintained, the results of this analysis would not be changed, since the off-gas charcoal beds are located in the off-gas filter building, and the off-gas filter building HVAC would exhaust through the station exhaust stack. Assuming a fumigation accident meteorology consistent with Regulatory Guide 1.3, the resultant calculated radiological consequences at the exclusion area boundary are 320 mrem thyroid and 65 mrem whole body. These postulated doses are well within 10 CFR 100 limits.

Combustible Materials Charcoal Cable Insulation Cloth Fire Load The fire load for the fire zone is high.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-2 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant with respect to either safe shutdown capability or radiological consequences.

3.8.1.3 Fire Zone R-1c; Elevation 702 - 0 & 720 - 6 General Access Area Description This zone consists of the main access corridor and general access for this level, off-gas refrigeration units, spent resin tank, spent resin decant and sludge pumps, phase separator decant and sludge pumps, ultrasonic resin cleaner tank and pumps, laundry sample tanks, evaporator condenser drain tank pumps, laundry collection pumps, floor drain collector pumps and surge pumps, chemical waste surge pumps, waste collection pumps, waste processing pumps, FP F/D sludge tanks, waste sludge tanks, waste sludge pumps, and FP F/D sludge and decant pumps and dry active waste storage. This zone includes elevations 702 feet 0 inch and 720 - 6 and has a total floor area of 37,047 ft2.

Compressed hydrogen gas lines pass through this fire zone to supply the main generator hydrogen system and the hydrogen water chemistry system.

A plan view of this fire zone is shown on Figures FP-16a and FP-17a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-16b and FP-17b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch concrete and is not fire rated. At 719-2 there is a steel grating around the deaerator tank. Walls are 28-inch minimum reinforced concrete, 11-5/8-inch minimum solid concrete block, or 11-5/8-inch minimum hollow concrete block. The south wall adjoining the control building is 3-hour fire rated. The walls adjoining Fire Zone R-1b and its entrance are 3-hour fire rated. The two stairway enclosures and elevator hoistways are 1.9-hour fire rated.

There are four open and two enclosed stairways in the zone. The ceiling at elevation 720 feet 6 inch is 16-inch minimum concrete and is not fire rated. The ceiling at elevation 737 feet 0 inch is 24-inch minimum concrete and is not fire rated. The ceiling over the entrance to Fire Zone R-1b and the ceiling over the radwaste pump and tank are 3-hour fire rated. There are eighty-nine 4-inch floor drains, and three 12- x 12-inch, eleven 8- x 8-inch, and three 6- x 6-inch box drains located in this zone.

Safety-Related Equipment None.

Radiological Materials The spent resin storage tank contains a water slurry of organic resin. Radioactive corrosion products and fission products are on the resin. This liquid is also processed by the spent resin decant and sludge pumps. The equipment drain tank contains water that is considered low-level radioactive waste. The liquid processed by the phase separator pumps is low-level radioactive waste. The resin sludge processed by the ultrasonic resin cleaner collector pump and tank is a low-level radioactive waste. The laundry drain water is considered low-level radioactive waste. The evaporative condenser drain tank pumps handle liquid that contains some radioactive contaminants. All floor drain collector tanks contain radioactive low-level liquid APPENDIX E E3.8-3 REV. 15, JANUARY 2013

CPS/USAR waste. The chemical waste surge, collection, and processing pumps process low-level radioactive liquid. All remaining sludge tanks and pumps process low-level radioactive waste.

Combustible Materials Lubricants Cable Insulation Charcoal HVAC Material Flammable Liquids Paper, Plastic, Rubber and Cloth Dry Active Waste (PVC, Rubber and Paper)

Hydrogen (compressed)

Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided at elevation 702-0 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.4 Fire Zone R-1d; Elevation 702 - 0 Radwaste Floor Drain Collector Tank Room Description This zone consists of the radwaste floor drain collector tanks, floor drain surge tanks, and floor drain evaporator feed tanks. There is a floor area of 2761 ft2.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch concrete and is not fire rated. The walls are 36-inch concrete or 11-5/8-inch minimum solid concrete block and are not fire rated. The ceiling is 40-inch concrete and is not fire rated. There are five 4-inch floor drains and two 8- x 8-inch box drains for the zone.

Safety-Related Equipment None.

Radiological Materials All floor drain collector tanks contain low-level radioactive liquid waste.

Combustible Materials APPENDIX E E3.8-4 REV. 15, JANUARY 2013

CPS/USAR Charcoal HVAC Material Cloth, Rubber and Plastic Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.5 Fire Zone R-1e; Elevation 702 - 0 Phase Separator Tank Room Description This zone contains the two phase separators. There is a floor area of 776 ft2.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch concrete, and is not fire rated. Walls are 39-inch concrete or 15-5/8-inch minimum solid concrete block and are not fire rated. The ceiling is 40-inch minimum concrete and is not fire rated. There are three 4-inch floor drains.

Safety-Related Equipment None.

Radiological Materials The separators contain radioactive sludge.

Combustible Materials Charcoal HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection APPENDIX E E3.8-5 REV. 11, JANUARY 2005

CPS/USAR Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.6 Fire Zone R-1f; Elevation 702 - 0 Waste Tank Room Description This zone contains waste collector and waste surge tanks. There is a floor area of 2702 ft2.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch reinforced concrete and is not fire rated. The walls are 19-5/8-inch minimum solid concrete block and are not fire rated. The ceiling is 40-inch minimum reinforced concrete and is not fire rated. There are six 4-inch floor drains. The zone extends from elevation 702 feet 0 inch to elevation 737 feet 0 inch.

Safety-Related Equipment None.

Radiological Materials The waste surge tanks and waste collector tanks contain low-level radioactive liquid waste.

Combustible Materials Charcoal HVAC Materials Plastic, Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

APPENDIX E E3.8-6 REV. 11, JANUARY 2005

CPS/USAR 3.8.1.7 Fire Zone R-1g; Elevation 702 - 0 Chemical Waste Tank Room Description This zone contains chemical waste collection and processing tanks. There is a floor area of 2262 ft2.

A plan view of this fire zone is shown on Figure FP-16a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-16b. No safety-related cable trays are located in this fire zone.

The floor is 108-inch concrete and is not fire rated. The walls are 23-5/8-inch minimum solid concrete block and are not fire rated. The ceiling is 40-inch concrete and is not fire rated.

There are six 4-inch floor drains. The zone extends from elevation 702 feet 0 inch to elevation 737 feet 0 inch.

Safety-Related Equipment None.

Radiological Materials The chemical waste collection tanks contain low-level radioactive liquid waste.

Combustible Materials Charcoal HVAC Material Plastic, Rubber and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.8 Fire Zone R-1h; Elevation 720 - 6 General Access Area Description This zone consists of the general access on elevation 720 feet 6 inch, the cable tray and piping tunnel, the off-gas recirculating units, evaporator condenser drain tanks, ultrasonic resin cleaning, receiving, and storage tanks, radwaste demineralizer tanks, waste demineralizer APPENDIX E E3.8-7 REV. 11, JANUARY 2005

CPS/USAR regenerator skid, holding pumps, waste filter assembly rack, F/P filter demineralizer precoat skid, fuel pool cleanup holdup pump, F/P filter demineralizer and waste filters, valve aisle access areas, and area coolers and dry active waste storage. The floor area is 28,708 ft2.

A plan view of this fire zone is shown on Figure FP-17a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-17b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch minimum concrete and is not fire rated, except for the area over the entrance to Zone R-1b and the stairwell/elevator area, which includes the demineralizer waste, that are 3-hour fire rated. The walls are 36-inch minimum solid concrete, 19-5/8-inch minimum solid concrete block, or 11-5/8-inch minimum hollow concrete block. The stairway and demineralizer waste enclosure walls and internal elevator hoistway walls are 1.9-hour fire rated.

The wall adjacent to Zone R-1b and the south wall adjacent to the auxiliary building are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 24-inch minimum reinforced concrete and is not fire rated, except for the portion below Zone R-1k which is 3-hour fire rated, and the ceiling over the demineralizer waste which is 2-hour fire rated. There are seventy-nine 4-inch floor drains in this zone.

Safety-Related Equipment None.

Radiological Materials Radioactive off-gas is processed by the off-gas recirculating units. Some slight radioactivity may be present in the evaporator condenser drain tanks if the steam used in the evaporators is extraction steam. The resin to be ultrasonically cleaned is contaminated with radionuclides.

The demineralizers process a liquid stream of low-level radioactive waste. The liquid stream processed by the holding pumps is considered slightly radioactive. The ion exchange filter media in the demineralizer vessels are contaminated with radioactive waste, and the waste filters have radioactive suspended particulate adhering to the filter media from the liquid stream flowing through the filter. Liquid low-level radioactive waste is flowing through the valves and piping in the valve aisle.

Combustible Materials Lubricants Cable Insulation Charcoal HVAC Materials Plastic, Rubber and Cloth Dry Active Waste (PVC, Rubber and Paper)

Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-8 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.9 Fire Zone R-1i; Elevation 737 - 0 General Access Area and Shops Description This zone consists of the general access corridor, Radiation Protection offices, floor drain evaporator heater, floor drain evaporator recirculation pump and bottom-out pumps, cold tool room, hot tool room, decontamination room, machine shop, storage area, security ballistics resistant enclosure (BRE) 9, chemical waste evaporator heater, chemical waste evaporator recirculation pump and bottom-out pumps. The floor area is 40,955 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum reinforced concrete and is not fire rated. The walls are 12-inch minimum concrete, 11-5/8-inch minimum solid concrete block, 7-5/8-inch minimum hollow concrete block, 24-inch minimum removable concrete block, or 5/8-inch gypsum board. The south wall is 3-hour fire rated. The wall separating this zone from Zone R-1n and Zone R-1k are 3-hour fire rated. The two stairway enclosure walls and the three elevator hoistway enclosure are 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling is 16-inch minimum reinforced concrete and is not fire rated. There are fifty-eight 4-inch floor drains, six 8- x 8-inch box drains, one 12- x 12-inch box drain, and one 4-inch shower floor drain.

Safety-Related Equipment None.

Radiological Materials The floor drain evaporator heater recirculation pump, bottom-out pumps, and chemical waste evaporator handle liquid low-level radioactive waste. Contaminated tools and exhaust filters will be in the hot tool room. Minimal contamination from the decontamination of personnel is expected in the decontamination room.

Combustible Materials Lubricants Cable Insulation HVAC Material Flammable Liquids Plastic, Rubber, Cloth, Paper, Wood and Propane Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.8-9 REV. 15, JANUARY 2013

CPS/USAR Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.10 Fire Zone R-1j; Elevation 737 - 0 Dry Active Waste Baler Room Description This zone consists of the dry active waste baler, radwaste drum filling station, cement silo, metering pumps, drum conveyor, drum and high integrity container shielded storage area, and truck bay. The floor area is 6074 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is 40-inch minimum concrete and is not fire rated. The walls are 12-inch minimum concrete, 23-5/8-inch minimum solid concrete block, or 11-5/8-inch hollow concrete block. The walls are not fire rated, except for the wall adjoining Zone R-1k which is 3-hour fire rated. The ceiling is 16-inch minimum reinforced concrete and is not fire rated. There are fourteen 4-inch floor drains, five 6-inch floor drains, seventeen 4-inch trench drains, and twelve 2-inch drains.

Safety-Related Equipment None.

Radiological Materials The dry active waste baler and storage area contains contaminated paper, rags, protective clothing, boots, gloves, etc.

Combustible Materials Lubricants Cable Insulation Charcoal HVAC Material Plastic, Rubber and Cloth High Integrity Containers (Dewatered Waste)

Fire Load The fire load for the fire zone is high.

APPENDIX E E3.8-10 REV. 11, JANUARY 2005

CPS/USAR Fire Detection and Protection The baler room is protected by an automatic preaction sprinkler system activated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.11 Fire Zone R-1k; Elevation 737 - 0 Clean and Dirty Oil Storage Room Description This zone consists of clean and dirty oil storage tanks, two oil transfer pumps, two oil purifiers, and two area coolers. The fire zone has a floor area of 1191 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is a minimum of 24-inch reinforced concrete and is 3-hour fire rated. Walls are 11-5/8-inch hollow concrete block. All four zone walls are 3-hour rated. The ceiling is 16-inch minimum reinforced concrete and is 3-hour fire rated. There are four 6-inch floor drains located in the zone.

Safety-Related Equipment None.

Radiological Materials None.

Combustible Materials Lubricants Cable Insulation HVAC Material Wood, Paper and Plastic Fire Load The fire load for the fire zone is high.

Fire Detection and Protection The clean and dirty oil tank room is protected by an automatic preaction sprinkler system activated by thermal detectors. Portable fire extinguishers (in the zone) and hose stations APPENDIX E E3.8-11 REV. 11, JANUARY 2005

CPS/USAR (outside the zone door) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.12 Fire Zone R-1m; Elevation 737 - 0 Weld Shop and Storeroom Description This zone consists of the weld shop, storeroom, and storeroom office. The floor area is 6755 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is 24-inch minimum concrete and is not fire rated. The walls are 11-5/8-inch hollow concrete block. Except for the walls adjacent to the clean and dirty oil storage room (Zone R-1k) which are 3-hour fire rated, the walls are not fire rated. There are seventeen 40-inch floor drains and one 12-inch by 12-inch box drain located in the zone. The ceiling is 16-inch concrete and is not fire rated.

Safety-Related Equipment None.

Radiological Materials The weld shop may occasionally contain some contaminated equipment.

Combustible Materials Lubricants Cable Insulation Charcoal HVAC Material Flammable Liquids Wood, Paper, Plastic, Rubber, Cloth and PVC Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection The weld shop and storeroom area are protected by automatic preaction sprinkler systems activated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-12 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.13 Fire Zone R-1n; Elevation 737 - 0 Paint and Oil Storage Room Description This zone consists of the paint and oil storage room. The floor area is 886 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is 9-inch concrete and is not fire rated. The walls are 24-inch concrete or 11-5/8-inch hollow concrete block. The zone wall adjacent to Zone R-1i is 3-hour fire rated. All other walls are not fire rated. The ceiling is 8-inch flexicore and is not fire rated. There are two 12-inch-wide drain trenches with four 4-inch trench drains.

Safety-Related Equipment None.

Radiological Materials None.

Combustible Materials Lubricants Solvent Acetone Methanol Propane Gasoline Fuel Oil Flammable Liquids Fire Load The fire load for the fire zone is high.

Fire Detection and Protection The paint and oil storage room is protected by an automatic sprinkler system. Portable fire extinguishers and hose stations are provided in an adjacent fire zone for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-13 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.14 Fire Zone R-1o; Elevation 737 - 0: Radwaste Operation Center Description This zone consists of the radwaste filter control panel, demineralizer control panel, solid and liquid radwaste control panel, and radwaste evaporator control panels. The fire zone has a floor area of 2728 ft2.

A plan view of this fire zone is shown on Figure FP-18a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-18b. No safety-related cable trays are located in this fire zone.

The floor is a minimum of 23-inch concrete and is not fire rated. Walls are 24-inch concrete, 35-5/8-inch solid concrete block, or 11-5/8-inch hollow concrete block. The north walls adjacent to Zone R-1k is 3-hour fire rated. The wall adjacent to the stairwell and elevator enclosure is 1.9-hour fire rated. The remaining zone walls are not fire rated. The ceiling is 16-inch minimum concrete and is not fire rated. There is one 4-inch floor drain located in the zone.

Safety-Related Equipment None.

Radiological Materials None.

Combustible Materials Cable Insulation HVAC Material Wood, Paper and Plastic Carpet Fire Load The fire load for the fire zone is high.

Fire Detection and Protection There is an ionization fire detection system throughout this zone. Portable fire extinguishers (inside the zone) and hose stations (in adjacent fire zones) are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-14 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.15 Fire Zone R-1p; Elevation 762 - 0 General Access and Shops and Elevation 783-6 Elevator Hoistway Description This zone consists of the maintenance file room, electrical shop, control and instrumentation shop, maintenance offices, general access area for the maintenance shops and offices, and general access area for the 762-foot level of the radwaste building. The floor area is 10,002 ft2.

A plan view of this fire zone is shown on Figure FP-19a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-19b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch concrete and is not fire rated. The walls are 24-inch minimum concrete, 11-5/8-inch minimum solid concrete block, 3-5/8-inch hollow concrete block, or 5/8-inch gypsum board. The ceiling is 12-inch minimum concrete and is not fire rated. The south wall of the zone separating the zone from the control building is 3-hour fire rated. The elevator hoistway walls along the east wall near the northeast corner are 1.9-hour fire rated, and the ceiling is not fire rated. The enclosed stairway walls and the wall adjacent to the elevator hoistway are 1.9-hour fire rated. The remaining walls are not fire rated. There are ten 4-inch floor drains in this zone.

Safety-Related Equipment None.

Radiological Materials None.

Combustible Materials Lubricants Cable Insulation HVAC Material Flammable Liquids Paper, Plastic and Cloth Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-15 REV. 17, OCTOBER 2015

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.16 Fire Zone R-1q; Elevation 762-0 Miscellaneous Equipment Area and 784-6 Elevator Hoistways Description This zone consists of the concentrate waste tanks and pumps, condenser vacuum pump, floor drain evaporator monitoring tank and pumps, chemical waste evaporator monitoring tank and pump, floor drain evaporator instrument panel, excess water tanks, excess water pumps, waste sample pumps, waste sample tanks, instrument air dryers, service air compressors, chemical waste evaporator, separator, condenser, and subcooler, floor drain evaporators, separators, condensers, and subcoolers. The floor area is 17,574 ft2.

A plan view of this fire zone is shown on Figure FP-19a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-19b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch minimum concrete and is not fire rated. The walls are 24-inch minimum concrete, 15-5/8-inch solid concrete block, or 11-5/8-inch hollow concrete block. The stairway enclosures and two elevator hoistways are 1.9-hour fire rated and the remaining walls are not fire rated. The ceiling is 12-inch minimum reinforced concrete or 6-inch concrete on steel decking. The ceiling is not fire rated. There are forty-six 4-inch floor drains in this zone.

Safety-Related Equipment None.

Radiological Materials Concentrated liquid low-level radioactive waste is held in the concentrate storage tanks. The concentrate pumps handle a concentrated liquid stream of low-level radioactive waste. The floor drain evaporator monitoring tank and pumps, chemical waste evaporator monitoring tank and pump, water tanks and pumps, and waste sample tanks and pumps handle clean water that is purified from liquid radwaste. There may be some residual radioactive contaminants.

Combustible Materials Lubricants Cable Insulation Charcoal HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

APPENDIX E E3.8-16 REV. 17, OCTOBER 2015

CPS/USAR Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.17 Fire Zone R-1r; Elevation 762 - 0 Contractor Staging Area Description This zone consists of the 480-volt substations, motor control center, area coolers, and the contractor staging area and offices at elevation 762 feet 0 inch and the storeroom area at elevation 759 feet 0 inch. The floor area is 19,875 ft2.

A plan view of this fire zone is shown on Figure FP-19a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-19b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch minimum concrete and is not fire rated. The walls are 24-inch minimum concrete, 15-5/8-inch minimum solid concrete block, or 11-5/8-inch hollow concrete block. The walls are not fire rated, except for the wall adjacent to the elevator hoistway which is 1.9-hour fire rated. The ceiling is 12-inch minimum concrete and is not fire rated. There are twenty-seven 4-inch floor drains in this zone.

Safety-Related Equipment None.

Combustible Materials Lubricants Cable Insulation HVAC Material Flammable Liquids Paper, Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection There is an ionization fire detection system provided above the 480 volt substations. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.8-17 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.18 Fire Zone R-1s; Elevation 762 - 0 Radwaste HVAC Room Description This zone contains the supply air units, vent panel, motor control center, HVAC instrument panel, area coolers, vent supply air handling unit, and vent exhaust. The zone has a floor area of 8937 ft2.

A plan view of this fire zone is shown on Figure FP-19a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-19b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch minimum concrete and is not fire rated, except for the portion above Zone R-1k which is 3-hour fire rated. The walls are 24-inch concrete or 11-5/8-inch hollow concrete block. The walls are not fire rated. The ceiling is 12-inch minimum concrete and is not fire rated. There are sixteen 4-inch floor drains in this zone.

Safety-Related Equipment None.

Combustible Materials Lubricants Cable Insulation HVAC Material Rubber, Plastic and Cloth Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

APPENDIX E E3.8-18 REV. 11, JANUARY 2005

CPS/USAR 3.8.1.19 Fire Zone R-1t; Elevation 781-0 General Access Corridor, 800-0 Elevator Access Corridor and Airlocks from Control to Cable Tunnel Roof, and 821-6 Elevator Motor Room Description This zone on the 781-foot elevation is a general access corridor. This zone on the 800-0 elevation is an elevator access corridor and the two airlocks from the Control building to the Cable Tunnel Roof (ceiling of the 781-foot elevation general access corridor). The zone has a floor area of 4800 ft2.

A plan view of this fire zone is shown on Figure FP-13a and FP-14a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b and FP-14b. No safety-related cable trays are located in this fire zone.

The floor for the elevation 781-0 General Access Corridor is 16-inch concrete, and is not fire rated. The walls are 24-inch minimum concrete or 11 5/8-inch hollow concrete block. The south and west walls are 3-hour fire rated. The block wall adjacent to the elevator enclosure is 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling is 18-inch minimum concrete which is not fire rated. There are seven 4-inch floor drains in the zone.

The floor for the 800-0 Elevator Access Corridor and Airlocks from Control building to Cable Tunnel Roof is 18-inch minimum concrete (floor is the same as the ceiling for 781-0 General Access Corridor), and is not fire rated. The walls are 24-inch minimum concrete. The south and west walls are 3-hour fire rated. The concrete on the north and east side of the elevator enclosure is 3-hour fire rated. The remaining walls for the airlocks from Control Building to Cable Tunnel Roof are 3-hour fire rated. The ceiling is 12-inch minimum concrete on the room of the elevator corridor which is not fire rated. The roof of the airlocks from Control to the Cable Tunnel Roof are 18-inch minimum concrete. There are no floor drains in the Elevator Access Corridor and/or Airlocks from Control building to Cable Tunnel Roof, although the nearby Cable Tunnel Roof contains 5 floor drains.

The floor for the 821-6 Elevator Motor room is 12-inch minimum. The walls are 24-inch minimum concrete and are 3-hour fire rated. The ceiling is 12-inch minimum concrete which is not fire rated. There are no floor drains in the room.

Safety-Related Equipment None.

Radiological Materials The I&C storage and maintenance area located within this zone may contain contaminated equipment.

Combustible Materials Lubricants Cable Insulation HVAC Material Wood, Paper, Plastic, Cloth and Rubber APPENDIX E E3.8-19 REV. 17, OCTOBER 2015

CPS/USAR Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection Two hose stations and two fire extinguishers are provided in the zone for manual firefighting.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.8.1.20 Fire Zone R-1u; Elevation 781 - 0 Calibration Lab Description This fire zone consists of the calibration lab on the 781-foot elevation level and has an area of 2742 ft2. A plan view of this fire zone is shown on Figure FP-13a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-13b. No safety-related cable trays are located in this fire zone.

The floor is 16-inch concrete and is not fire rated. The walls are 24-inch concrete, 7-5/8-inch hollow concrete block, or 3-1/2-inch insulated fill metal siding and are not fire rated. The ceiling is built-up roofing on 2-inch rigid insulation over steel decking which is not fire rated. There are five 4-inch floor drains.

Safety-Related Equipment None.

Radiological Materials None.

Combustible Materials HVAC Material Flammable Liquids Wood, Paper, Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is high.

Fire Detection and Protection Fire extinguishers are provided in the zone for manual firefighting.

APPENDIX E E3.8-20 REV. 17, OCTOBER 2015

CPS/USAR Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

APPENDIX E E3.8-21 REV. 17, OCTOBER 2015

CPS/USAR TURBINE BUILDING FIRE AREA/ZONE INDEX Cable Fire Fire Page Zone Barrier Tray Area Zone Area Description Number Drawing Drawing Drawing T-1 T-1a General Access Area - E3.9-1 FP-20a FP-20b 18 elevation 712'-0" T-1b Condensate Booster Pump E3.9-2 FP-20a FP-20b -

Room - elevation 712'-0" T-1c Condensate Pump Room - E3.9-2 FP-20a FP-20b -

elevation 709'-0" T-1d Condenser Pit - elevation E3.9-3 FP-20a FP-20b -

712'-0" T-1e Heater Bay and Tunnel - E3.9-4 FP-21a FP-21b 19 elevations 737'-0", 762'-0", FP-22a FP-22b 20 781-0 FP-23a FP-23b 21 T-1f General Access Area - E3.9-5 FP-21a FP-21b 19 elevation 737'-0" T-1g Heater Bays - elevation 762'- E3.9-6 FP-22a FP-22b 20 0", 781-0 FP-23a FP-23b 21 T-1h General Access and E3.9-7 FP-22a FP-22b 20 Equipment - elevation 762'-0", FP-23a FP-23b 21 785-0 T-1i Turbine Oil Reservoir Room - E3.9-8 FP-22a FP-22b -

elevation 762'-0", 781-0 FP-23a FP-23b 21 T-1j Steam Jet Air Ejector Rooms E3.9-9 FP-23a FP-23b -

- elevation 781'-0" T-1k General Access Area (West) - E3.9-9 FP-23a FP-23b 21 elevation 781'-0" T-1m Turbine Deck - elevation 800'- E3.9-10 FP-24a FP-24b -

0" and elevation 819-10 Elevator Room T-1n Hydrogen Analyzer Room - E3.9-11 FP-24a FP-24b -

elevation 800'0" APPENDIX E E3.9-i REV. 18, OCTOBER 2016

CPS/USAR 3.9 TURBINE BUILDING 3.9.1 Fire Area T-1 3.9.1.1 Fire Zone T-1a; Elevation 712 - 0 General Access Area Description Fire Zone T-1a consists of the general access area, floor drain pump and tank rooms, condensate polisher tank rooms, LCLC pumps, LCLC tank, cation and anion regenerator tanks, and acid, and caustic reclaim tanks - all at elevation 712 feet 0 inch. The floor area is 33,214 ft2.

Compressed hydrogen gas lines pass through this fire zone to supply the main generator hydrogen system and the hydrogen water chemistry system. Compressed oxygen bottles are located in this fire zone.

A plan view of this fire zone is shown on Figure FP-20a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-20b. No safety-related cable trays are located in this fire zone.

The floor is 96-inch minimum concrete and is not fire rated. The walls are either 19 5/8-inch minimum solid concrete block, 24-inch minimum concrete, or 3 1/8-inch removable sound attenuation panel. The south wall adjacent to the auxiliary building is 11 5/8-inch minimum hollow concrete block and is 3-hour fire rated. The remaining walls are not fire rated. There are removable19 5/8-inch minimum solid concrete blocks in the floor drain pump and tank rooms and also each condensate polisher tank room. The ceilings are 12-inch minimum concrete and are not fire rated. There are two open and two 1.9-hour fire rated enclosed stairways and one 1.9-hour fire rated enclosed elevator in this zone. There are a total of seventy-eight 4-inch floor drains in this zone.

Safety-Related Equipment None.

Combustible Materials Lubricants Cable Insulation HVAC Material Wood, Paper, Plastic, Cloth and Rubber Hydrogen (compressed)

Oxygen (compressed)

Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

APPENDIX E E3.9-1 REV. 15, JANUARY 2013

CPS/USAR 3.9.1.2 Fire Zone T-1b; Elevation 712 - 0 Condensate Booster Pump Room Description Fire Zone T-1b consists of the condensate booster pump room at elevation 712 feet 0 inch. The floor area is 3633 ft2.

A plan view of this fire zone is shown on Figure FP-20a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-20b. No safety-related cable trays are located in this fire zone.

The floor is 96-inch minimum concrete and is not fire rated. The walls are 11 5/8-inch concrete block and are not fire rated. The ceiling is 22-inch minimum concrete and is not fire rated.

There are eight 4-inch floor drains located in this zone.

Safety-Related Equipment None.

Combustible Materials Lubricants Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (inside the zone) and hose stations (outside the zone door) are provided for manual firefighting as shown on the reference drawings.

Design-Basis Fire The existing fire hazards are not significant enough to present a problem due to the breaching of the radioactive systems and building constraints allowing a release of radioactive material to the environment in excess of 10 CFR 100 limits.

3.9.1.3 Fire Zone T-1c; Elevation 709 - 0 Condensate Pump Room Description Fire Zone T-1c consists of the condensate pump room at elevation 709 feet 0 inch. The floor area is 2295 ft2.

A plan view of this fire zone is shown on Figure FP-20a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-20b. No safety-related cable trays are located in this fire zone.

The floor is 96-inch minimum concrete and is not fire rated. The walls are either 40-inch minimum concrete or 19-5/8-inch minimum concrete block. The walls are not rated. There are APPENDIX E E3.9-2 REV. 11, JANUARY 2005

CPS/USAR also three sections of the walls that contain a metal siding type of 3-1/8-inch sound attenuation panels that are not fire rated. The ceiling is 48-inch minimum concrete and is not fire rated.

This zone contains three 4-inch floor drains.

Safety-Related Equipment None.

Combustible Materials Lubricants Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers (inside the zone) and hose stations (outside the zone doors) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.4 Fire Zone T-1d; Elevation 712' - 0" Condenser Pit Description Fire Zone T-1d consists of the bottom portion of the condenser unit at elevation 712 feet 0 inch.

The floor area is 7408 ft2.

A plan view of this fire zone is shown on Figure FP-20a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-20b. No safety-related cable trays are located in this fire zone.

The floor is 96-inch minimum concrete and is not fire rated. The walls are either 40-inch minimum concrete or 43-5/8-inch minimum concrete block and are not fire rated. There is no ceiling for this zone as it is open to elevation 737 feet 0 inch. This zone contains five 4-inch floor drains.

Safety-Related Equipment None.

Combustible Materials Lubricants Cable Insulation Plastic, Cloth and Rubber APPENDIX E E3.9-3 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection The condenser tube pull pit and associated areas are protected by a sidewall automatic preaction sprinkler system activated by thermal detectors. Portable fire extinguishers (in the zone) and hose stations (in an adjacent zone) are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.5 Fire Zone T-1e; Elevations 737 - 0 762 - 0, 781-0 Heater Bay and Tunnel Description This zone consists of the LP heaters, HP heaters, cooler area, and the upper portions of the condenser unit at 737 - 0, and the main steam tunnel at 762 - 0. These two parts are combined for analysis and have a total floor area of 18,163 ft2.

A plan view of this fire zone is shown on Figures FP-21a, FP-22a and FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figures FP-21b, FP-22b and FP-23b. No safety-related cable trays are located in this fire zone.

At 737' - 0" the floor is 20-inch minimum concrete and is not fire rated. The walls are either 40-inch minimum concrete or 43-5/8-inch minimum solid concrete block. The walls have 56-inch minimum removable solid concrete blocks. The walls are not fire rated. The ceiling of the heater area is 14-inch minimum concrete and is not fire rated. The steam tunnel portion of the zone is open through elevation 781 feet 0 inch. This zone has one open stairway and thirty-nine 4-inch floor drains.

At 762-0 the floor is 60-inch concrete and is not fire rated. The walls are 56-inch concrete or metal siding and are not fire rated, except for the wall adjoining Zone T-1i through elevation 781 which is 3-hour fire rated. The ceiling at elevation 762-0 is 60-inch concrete and is not fire rated. There are two 4-inch floor drains in the zone.

Safety - Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for the safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Lubricants Cable Insulation Plastic, Cloth and Rubber APPENDIX E E3.9-4 REV. 11, JANUARY 2005

CPS/USAR Fire Load The fire load for the fire zone is low.

Fire Detection and Protection The area beneath the turbine-generator where oil could spread from a pipe break is protected by an automatic wet pipe sprinkler system. An 8-inch concrete curb is provided along column N between Rows 110 and 114 to isolate potential turbine oil spills within the sprinkler protected area. Hose stations are provided in the zone for elevation 737-0 and in adjacent zones for other elevations for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.6 Fire Zone T-1f; Elevation 737 - 0 General Access Area Description This zone consists of the general access area at elevation 737 feet 0 inch. The floor area is 19,653 ft2.

A compressed hydrogen gas line passes through this fire zone to supply the main generator hydrogen system.

A plan view of this fire zone is shown on Figure FP-21a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-21b. No safety-related cable trays are located in this fire zone.

The floor is 20-inch minimum concrete and is not fire rated. The walls are 24-inch minimum concrete. The north exterior wall, the south wall adjacent to the auxiliary building, and the west exterior wall from Column Line J to S (adjacent to the transformers) are 3-hour fire rated. The remaining portion of the west wall and all of the east wall adjacent to the Radwaste Building are not fire rated. The ceiling is 12-inch minimum concrete with areas of 1-1/2-inch steel grating and is not fire rated. There are two open and two enclosed 1.9-hour fire rated stairways, one 1.9-hour fire rated enclosed elevator, and fifty-five 4-inch floor drains in this zone.

Safety-Related Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Lubricants Cable Insulation HVAC Material Wood, Paper, Plastic, Cloth, and Rubber Hydrogen (compressed)

Fire Load The fire load for the fire zone is moderate.

APPENDIX E E3.9-5 REV. 15, JANUARY 2013

CPS/USAR Fire Detection and Protection The R.R. bay floor area at elevation 737 feet 0 inch is protected by an automatic preaction sprinkler system activated by thermal detectors. Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.7 Fire Zone T-1g; Elevation 762 - 0 and 781-0 Heater Bays Description The zone on elevation 762 feet 0 inch consists of the LP heaters and main steam stop and control valves. The floor area is 23,343 ft2.

A plan view of this fire zone is shown on Figure FP-22a and FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-22b and FP-23b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete and is not fire rated. The walls are 48-inch minimum concrete and are not rated except for the wall adjacent to Zone T-1i which is 3-hour fire rated.

The ceiling is 14-inch minimum concrete and is not fire rated. At elevation 754 feet 0 inch, the ceiling is 1-1/2-inch steel grating, which is not fire rated. The majority of the zone is open up to elevation 800 feet 0 inch. There are twenty-seven 4-inch floor drains in this zone.

Safety-Related Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Lubricants Cable Insulation Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection The area beneath the turbine-generator where oil could spread from a pipe break is protected by an automatic wet pipe sprinkler system. Portable fire extinguishers (in an adjacent zone) and hose stations (in the zone) are provided for manual firefighting as shown on the referenced drawings.

APPENDIX E E3.9-6 REV. 11, JANUARY 2005

CPS/USAR Design-Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.8 Fire Zone T-1h; Elevations 762 - 0 & 785 - 0 General Access and Equipment Description This zone consists of the turbine auxiliaries hydrogen seal oil unit, motor-driven RX feed pump, and area coolers. The floor area is 22,774 ft2.

A compressed hydrogen gas line passes through this fire zone to supply the main generator hydrogen system.

A plan view of this fire zone is shown on Figure FP-22a and FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-22b and FP-23b. No safety-related cable trays are located in this fire zone.

The floor is a minimum 12-inch concrete and is not fire rated. The walls are a minimum 24-inch reinforced concrete, 3-5/8-inch minimum hollow concrete block, and 16-inch minimum solid removable concrete block. The north exterior wall, the south wall adjacent to the auxiliary building, the west exterior wall from Column Line J through S, and the walls adjacent to Zone T-1i are 3-hour fire rated. The remaining walls are not fire rated. The ceiling is 12-inch minimum concrete and is not fire rated.

The majority of the zone is open up to elevation 800 feet 0 inch. There are two open and two enclosed stairways in this zone. There are fifty 4-inch floor drains in the zone. The stairwell enclosures on the north and east walls and the elevator enclosure on the north wall are 1.9-hour fire rated.

Safety-Related Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Spare Battery Cells Lubricants Cable Insulation HVAC Material Flammable Liquids Paper, Plastic, Cloth, and Rubber Hydrogen (compressed)

Fire Load The fire load for the fire zone is moderate.

Fire Detection and Protection The hydrogen seal oil unit is protected by an automatic deluge system activated by thermal detectors. The oil pipe line for the turbine-driven reactor feed pump is protected by a manual preaction sprinkler system. An automatic wet pipe sprinkler system is provided in the motor-driven reactor feedwater pump room. Two 8-inch concrete curbs are provided in the area near APPENDIX E E3.9-7 REV. 15, JANUARY 2013

CPS/USAR the hydrogen seal oil unit to isolate potential turbine oil spills within the area easily accessible for manual fire suppression. An automatic wet pipe sprinkler system is provided in the mezzanine area at elevations 777'-0" and 783'-0". Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.9 Fire Zone T-1i; Elevation 762 - 0 and 781 - 0 Turbine Oil Reservoir Room Description The turbine oil reservoir is located in this zone, which has a floor area of 855 ft2.

A plan view of this fire zone is shown on Figure FP-22a and FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-22b and FP-23b. No safety-related cable trays are located in this fire zone.

The floor is 60-inch concrete at elevation 766 feet 6 inches and is not fire rated. The walls are 56-inch concrete and 11-5/8-inch hollow concrete block. All walls are 3-hour fire-rated. The zone is open through elevation 781-0 and the ceiling is 16-inch concrete at elevation 800 feet 0 inch and is not fire rated. There are two 4-inch floor drains in this area.

Safety-Related Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Lubricants Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is high.

Fire Detection and Protection The turbine oil reservoir tank room is protected by an automatic wet pipe sprinkler system. A hose station is provided outside the zone door at elevation 762-0 for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

APPENDIX E E3.9-8 REV. 11, JANUARY 2005

CPS/USAR 3.9.1.10 Fire Zone T-1j; Elevation 781 - 0 Steam Jet Air Ejector Rooms Description This zone consists of the steam jet air ejectors, cooler condensers, catalytic recombiners, regenerator, desiccant dryer, steam seal evaporator and area cooler, and two steam packing exhausters, all at elevation 781 feet 0 inch. The floor area is 6284 ft2.

A plan view of this fire zone is shown on Figure FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-23b. No safety-related cable trays are located in this fire zone.

The floor is 14-inch minimum concrete and is not fire rated. The walls are either 24-inch minimum concrete, 43-5/8-inch minimum solid concrete block or 11-5/8-inch hollow concrete block. Some walls have removable solid concrete blocks. A partial wall extending to elevation 791 feet 0 inch separates the catalytic recombiner and the cooler condenser. No walls in this zone are fire rated. The ceiling is 12-inch minimum concrete and is not fire rated. There are twenty 4-inch floor drains in the zone.

Safety-Related Equipment None.

Combustible Materials Lubricants HVAC Material Plastic, Cloth and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection The zone is protected by a partial automatic wet pipe sprinkler system. Portable fire extinguishers and hose stations are provided outside the zone door for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.11 Fire Zone T-1k; Elevation 781 - 0 General Access Area (West)

Description This zone consists of a general access area. The floor area is 4397 ft2.

APPENDIX E E3.9-9 REV. 11, JANUARY 2005

CPS/USAR A plan view of this fire zone is shown on Figure FP-23a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-23b. No safety-related cable trays are located in this fire zone.

The floor is 12-inch minimum concrete and is not fire rated. The walls are 24-inch minimum concrete, 43-5/8-inch solid concrete block, 11-5/8-inch hollow concrete block, and 64-inch solid removable concrete block. The south walls, the north wall, and the west wall from Column Line J to S are 3-hour fire rated, and the elevator enclosure walls are 1.9-hour fire rated. The remaining walls are not fire rated. The ceiling at elevation 800 feet 0 inch is 12-inch minimum concrete and 1-1/2-inch steel grating. The ceiling is not fire rated. There are seventeen 4-inch floor drains in this zone. This zone is open to Zone T-1h.

Safety-Related Equipment None.

Combustible Materials Lubricants Cable Insulation HVAC Material Plastic, Cloth, and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.12 Fire Zone T-1m; Elevation 800-0 Turbine Deck and Elevation 819-10 Elevator Room Description Fire Zone T-1m consists of the turbine deck and surrounding operating level, the turbine-driven reactor feed pumps, RFPT control panel, and reactor feed pump instrument panel, all at elevation 800 feet 0 inch. The floor area is 39,792 ft2. In addition, this fire zone includes the Elevator room and stairwell landing, elevation 819-10. The floor area of this elevator room and stairwell landing is 743 ft2.

A compressed hydrogen gas line passes through this fire zone to supply the main generator hydrogen system.

APPENDIX E E3.9-10 REV. 17, OCTOBER 2015

CPS/USAR A plan view of this fire zone is shown on Figure FP-24a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-24b. No safety-related cable trays are located in this fire zone.

The floor of the 800-0 Turbine elevation is 12-inch minimum concrete and 1-1/2-inch steel grating and is not fire rated. The walls are either 18-inch minimum concrete, 23-5/8-inch solid concrete block, 11-5/8-inch hollow concrete block, or 3-1/2-inch metal siding. The walls of two stairwell enclosures and one elevator enclosure are 1.9-hour fire rated. No other walls are fire rated. The roof is steel decking and is not fire rated. There are forty-one 4-inch floor drains.

Automatic heat vents are provided on the roof of this zone.

The floor area of this elevator room and stairwell landing is 6-inch minimum concrete and is not fire rated. The east and south walls of the elevator enclosure are 1.9-hour fire rated. No other walls are fire rated. The roof is steel decking and is not fire rated.

Safety-Related Equipment Class 1E electrical cables (in conduits), as well as instrumentation devices, are located in this zone. These cables and devices are not essential for safe shutdown of the plant (see Subsection 3.1.2.11).

Combustible Materials Lubricants Cable Insulation HVAC Material Flammable Liquids Wood, Paper, Plastic, Cloth, and Rubber Hydrogen (compressed)

Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided for manual firefighting as shown on the referenced drawings. The main generator exciter is protected by a CO2 system which is activated by a thermal detector. An automatic preaction sprinkler system is provided in the area of the turbine generator bearings and underskirt. Two automatic deluge sprinkler systems are provided in the two turbine-driven reactor feedwater pump rooms. The three sprinkler systems are activated by thermal detectors.

Design-Basis Fire No safe shutdown equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

3.9.1.13 Fire Zone T-1n; Elevation 800 - 0 Hydrogen Analyzer Room APPENDIX E E3.9-11 REV. 17, OCTOBER 2015

CPS/USAR Description Fire Zone T-1n consists of hydrogen analyzers and a preheat air ejector with a floor area of 338 ft2.

A plan view of this fire zone is shown on Figure FP-24a. Rated barriers, area detection, suppression systems, and major plant equipment are shown on Figure FP-24b. No safety-related cable trays are located in this fire zone.The floor is 12-inch concrete and is not fire rated.

The walls are 18-inch minimum concrete and are not fire rated. The roof is 12-inch concrete and is not fire rated. There are three 4-inch floor drains Safety-Related Equipment None.

Combustible Materials Cable Insulation HVAC Material Plastic, Cloth, and Rubber Fire Load The fire load for the fire zone is low.

Fire Detection and Protection Portable fire extinguishers and hose stations are provided outside the zone door for manual firefighting as shown on the referenced drawings.

Design-Basis Fire No safety-related equipment is present in this zone. Therefore, a fire in this zone will not affect safe shutdown.

APPENDIX E E3.9-12 REV. 17, OCTOBER 2015

4.0 COMPLIANCE WITH BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS A. OVERALL REQUIREMENTS OF NUCLEAR PLANT FIRE PROTECTION PROGRAM APPLICANT'S POSITION

1. Personnel 1. Comply:

Responsibility for the overall fire A comprehensive fire protection protection program should be assigned to program has been developed to train, a designated person in the upper level of organize, and guide personnel as an management. This person should retain effective fire protection team.

ultimate responsibility even though Responsibilities, organization, and formulation and assurance of program personnel qualifications have been implementation is delegated. Such adequately provided for and document-delegation of authority should be to staff ed in plant training and administrative personnel prepared by training and procedures, and records.

experience in fire protection and nuclear The fire protection system design is a plant safety to provide a balanced coordinated effort between the approach in directing the fire protection Applicant and his consultants.

programs for nuclear power plants. The Comprehensive documentation of the qualification requirements for the fire system and plant design and coordina-protection engineer or consultant who will tion are maintained and are retrievable assist in the design and selection of for evaluation.

equipment, inspect and test the completed physical aspects of the system, The USAR discusses the training and develop the fire protection program, and provisions for maintaining the assist in the fire-fighting training for the competence of the station fire-fighting operating plant should be stated. and operating crew, including Subsequently, the FSAR should discuss personnel responsible for maintaining the training and the updating provisions and inspecting the fire protection such as fire drills provided for maintaining equipment.

the competence of the station fire-fighting and operating crew, including personnel responsible for maintaining and inspecting the fire protection equipment.

The fire protection staff should be Comply:

responsible for:

a. Coordination of building layout and The building layout was coordinated systems design with fire area between the applicant's engineering requirements, including consideration staff and his consultants with identifica-of potential hazards associated with tion and consideration of fire hazards postulated design basis fires, dictating portions of the design.

b. Design and maintenance of fire A fire protection staff was established detection, suppression, and and its responsibilities include A.1 b, c, extinguishing systems, and d.

c. Fire prevention activities, APPENDIX E E4.1-1 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

d. Training and manual fire-fighting activities of plant personnel and the fire brigade.

(NOTE: NFPA 6 - Recommendations for Organization of Industrial Fire Loss Prevention contains useful guidance for organization and operation of the entire fire loss prevention program.)

2. Design Bases 2. Comply:

The overall fire protection program The overall fire protection program is should be based upon evaluation of based upon a fire hazards analysis, as potential fire hazards throughout the documented in the Fire Protection plant and the effect of postulated design Evaluation Report (FPER); the ability to basis fires relative to maintaining ability withstand a design-basis fire and shut to perform safety shutdown functions and down the plant safely, as documented minimize radioactive releases to the in the Safe Shutdown Analysis (SSA);

environment. and the minimization of the release of radioactive material to the environment, as documented in the FPER.

The FPER identifies and quantifies combustibles throughout the plant and provides details related to fire barriers, as well as fire detection and suppression.

The SSA documents the capability to safely shut down the plant using at least one safe shutdown method in the event of a design-basis fire in any single fire area of the plant.

The FPER and SSA form the basis for the design of the fire protection systems.

3. Backup 3. Comply with intent:

Total reliance should not be placed on a All areas protected by automatic single automatic fire suppression system. suppression systems are also protected Appropriate backup fire suppression by accessible hose stations with capability should be provided. sufficient hose lengths and portable fire extinguishers as a backup means of fire suppression, with the exception of the partial suppression system in Fire Zone A-3f (see Figures FP-5a and b).

The partial fire suppression system in Fire Zone A-3f is not required for safe shutdown, but is provided because portions of this zone have poor APPENDIX E E4.1-2 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION accessibility for manual fire fighting.

4. Single Failure Criterion 4. Comply:

A single failure in the fire suppression A single line break will not impair the system should not impair both the primary and secondary suppression primary and backup fire suppression capability in any fire zone in the RCA.

capability. For example, redundant fire However, a manual fire fighting capability water pumps with independent power will be provided by hose stations in supplies and controls should be adjacent areas using additional hose provided.Postulated fires or fire length stored near the station (50 feet protection system failures need not be maximum additional length).

considered concurrent with other plant BTP APCSB 9.5-1 Section IV.A, Overall accidents or the most severe natural Requirements of Nuclear Plant Fire phenomena.

Protection Program, Item 4 describes the single failure requirement and states:

The fire protection system should, however, retain their original design capability for (1) natural phenomena of less severity and greater frequency (approximately once in 10 years). At Clinton, there is no 10-year flood level stated in the USAR. However, the 100-year flood level at CPS is 697.0 ft (USAR 2.4.1.1.i.2). This is two feet below the fire pumps elevation of 699 ft (operating floor of the circulating water screen house, USAR 2.4.1.1.h.3). Use of the 100-year flood is conservative, since it is more severe than the requirement in the BTP to consider natural phenomena with frequency of approximately once in 10 years.

The effects of lightning strikes should be Lightning protection is provided for the included in the overall plant fire station buildings and the HVAC stack.

protection program. The lightning protection system is bonded to the station ground mat to provide an adequate low impedance path to lightning surges to ensure that the potential rise during lightning strikes is limited to reasonable values that equipment and personnel can safely withstand.

5. Fire Suppression Systems 5. Comply with intent:

Failure or inadvertent operation of the fire A detailed study of the fire protection suppression system should not system with respect to the guidelines of incapacitate safety-related systems or APCSB BTP 3-1 has been performed components. Fire suppression systems and compliance established.

APPENDIX E E4.1-3 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION that are pressurized during normal plant Safe shutdown equipment will be operation should meet the guidelines protected from the effects of failure or specified in APCSB Branch Technical inadvertent operation of the fire protec-Position 3-1, "Protection Against tion system. Such failure or inadvertent Postulated Piping Failures in Fluid operation would not compromise safe Systems Outside Containment."

shutdown capability, as demonstrated in the Fire Suppression Effects Analysis.

6. Fuel Storage Areas 6. Comply:

The fire protection program (plans, Fire protection is provided by several fire personnel and equipment) for buildings hose stations and portable fire storing new reactor fuel and for adjacent extinguishers in the vicinity of each fire zones which could affect the fuel storage and handling area. Partial storage zones should be fully operational automatic detection is installed in the fuel before fuel is received at the site. building. Detection is installed in those zones containing new fuel storage.

Schedule for implementation of Station administrative procedures modifications, if any, will be established specify actions to be taken for control on a case-by-case basis. of combustibles, control of ignition sources, control action to be taken in the event of a fire, and fire protection impairment reporting.

7. Fuel Loading 7. Comply:

The fire protection program for an entire The fire protection program as reactor unit should be fully operational approved by the NRC for the entire prior to initial fuel loading in that reactor reactor unit will be implemented and unit. fully operational prior to fuel load.

Schedule for implementation of modifi-cations, if any, will be established on a case-by-case basis.

8. Multiple-Reactor Sites 8. Not applicable.

On multiple-reactor sites where there are operating reactors and construction of remaining units is being completed, the fire protection program should provide continuing evaluation and include additional fire barriers, fire protection capability, and administrative controls necessary to protect the operating units from construction fire hazards. The superintendent of the operating plant should have the lead responsibility for site fire protection.

9. Simultaneous Fires 9. Not applicable.

APPENDIX E E4.1-4 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION Simultaneous fires in more than one reactor need not be postulated, where separation requirements are met. A fire involving more than one reactor unit need not be postulated except for facilities shared between units.

B. ADMINISTRATIVE PROCEDURES, CONTROLS, AND FIRE BRIGADE

1. Administrative procedures consistent 1. Comply with intent:

with the need for maintaining the Procedures are in place for maintaining performance of the fire protection system the performance of the fire protection and personnel in nuclear power plants systems, and competence of plant should be provided.

personnel.

Guidance is contained in the following publications:

NFPA 4 - Organization for Fire Services NFPA 4A - Organization for Fire Department NFPA 6 - Industrial Fire Loss Prevention NFPA 7 - Management of Fire Emergencies NFPA 8 - Management Responsibility for Effects of Fire on Operations

2. Effective administrative measures should 2. Comply:

be implemented to prohibit bulk storage of Effective administrative procedures combustible materials inside or adjacent have been developed to control bulk to safety-related buildings or systems storage of combustible materials inside during operation or maintenance periods.

or adjacent to safety-related buildings Regulatory Guide 1.39 "Housekeeping or systems. Housekeeping procedures Requirements for Water-Cooled Nuclear have been issued using Regulatory Power Plants," provides guidance on Guide 1.39 as a guideline.

housekeeping, including the disposal of combustible materials.

3. Normal and abnormal conditions or other 3. Comply:

anticipated operations such as modifica-Normal and abnormal conditions and tions (e.g., breaking fire stops, impairment other anticipated operations which of fire detection and suppression systems) would impair any fire detection or and refueling activities should be reviewed suppression system will be reviewed in by appropriate levels of management and accordance with written procedures appropriate special actions and and approved by the appropriate level procedures such as fire watches or of management.

temporary fire barriers implemented to assure adequate fire protection and reactor safety. In particular:

APPENDIX E E4.1-5 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

a. Work involving ignition sources such a. All work, such as welding and as welding and flame cutting should flame cutting, is accomplished be done under closely controlled under controlled conditions, using conditions. Procedures governing approved procedures. A trained such work should be reviewed and fire watch will be established.

approved by persons trained and Procedures are reviewed and experienced in fire protection. approved by qualified personnel.

Persons performing and directly assisting in such work should be trained and equipped to prevent and combat fires. If this is not possible, a person qualified in fire protection should directly monitor the work and function as a fire watch.

b. Leak testing, and similar procedures b. Testing will be accomplished under such as air flow determination, should controlled conditions using use one of the commercially available approved procedures. Leak testing aerosol techniques. Open flames or will not be done with open flame or combustion generated smoke should combustion-generated smoke.

not be permitted.

c. Use of combustible material, e.g., c. Combustible material storage and HEPA and charcoal filters, dry ion use is controlled by administrative exchange resins, or other procedures. All work activities will combustible supplies, in safety- be controlled using approved related areas should be controlled. procedures.

Use of wood inside buildings containing safety-related systems or equipment should be permitted only when suitable noncombustible substitutes are not available. If wood must be used, only fire retardant treated wood (scaffolding, lay down blocks) should be permitted. Such materials should be allowed into safety-related areas only when they are to be used immediately. Their possible and probable use should be considered in the fire hazard analysis to determine the adequacy of the installed fire protection system.

4. Nuclear power plants are frequently 4. Comply:

located in remote areas, at some distance The plant fire brigade is trained to from public fire departments. Also, first adequately control the effects of a fire.

response fire departments are often Offsite fire departments will be used volunteer. Public fire department only as a supplement to the plant fire response should be considered in the brigade.

overall fire protection program. However, the plant should be designed to be self-APPENDIX E E4.1-6 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION sufficient with respect to fire-fighting activities and rely on the public response only for supplemental or backup capability.

5. The need for good organization, training, 5. Comply:

and equipping of fire brigades at nuclear Regulatory Guide 1.101 is used for power plant sites requires effective guidance in the development of plant measures be implemented to assure emergency plans.

proper discharge of these functions. The guidance in Regulatory Guide 1.101, "Emergency Planning for Nuclear Power Plants," should be followed as applicable.

a. Successful fire fighting requires a. The maintenance and testing of the testing and maintenance of the fire fire detection and suppression protection equipment, emergency equipment is accomplished in lighting, and communication, as well accordance with an approved test as practice as brigades for the people plan. The test plan identifies all who must utilize the equipment. A phases of testing together with test plan that lists the individuals and identification of the responsible their responsibilities in connection personnel.

with routine tests and inspections of the fire detection and protection systems should be developed. The test plan should contain the types, frequency, and detailed procedures for testing.

Procedures should also contain Administrative procedures establish instructions on maintaining fire guidance for maintaining fire protection during those periods when protection during those periods the fire protection system is impaired when protection systems are or during periods of plant impaired or during periods of plant maintenance, e.g., fire watches or maintenance.

temporary hose connections to water systems.

b. Basic training is a necessary element b. The fire brigade members are to be in effective fire fighting operation. In trained to act effectively as a team, order for a fire brigade to operate under the control of the fire brigade effectively, it must operate as a team. leader.

All members must know what their All fire brigade members are to be individual duties are. They must be familiar with the nuclear plant familiar with the layout of the plant operations, plant layout, and and equipment location and operation equipment location.

in order to permit effective fire-fighting operations during times when a Fire drills are conducted at least particular area is filled with smoke or quarterly to maintain fire brigade is insufficiently lighted. Such training competence. Fire drills are can only be accomplished by conducted in a manner which APPENDIX E E4.1-7 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION conducting drills several times a year simulates all fire conditions, and (at least quarterly) so that all mem- provides the training objectives bers of the fire brigade have had the necessary to demonstrate the fire opportunity to train as a team, testing brigade's competency.

itself in the major areas of the plant.

Annually, the local fire department The drills should include the will be invited to participate in a fire simulated use of equipment in each drill.

area and should be preplanned and post-critiqued to establish the training objective of the drills and determine how well these objectives have been met. These drills should periodically (at least annually) include local fire department participation where possible.

Such drills also permit supervising personnel to evaluate the effect-iveness of communications within the fire brigade and with the on-scene fire team leader, the reactor operator in the control room, and the off-site command post.

c. To have proper coverage during all c. Shift crew members are trained in phases of operation, members of fire protection requirements. The each shift crew should be trained in plant fire brigade is fully trained in fire protection. Training of the plant fire protection of the total plant.

fire brigade should be coordinated This training is coordinated with with the local fire department so that offsite fire departments to assure a responsibilities and duties are deline- coordinated fire protection effort.

ated in advance. This coordination Training of offsite fire departments should be part of the training course includes operation precautions, and and implemented into the training of explains the need for radiation the local fire department staff. Local protection of department members.

fire departments should be educated in the operational precautions when fighting fires on nuclear power plant sites. Local fire departments should be made aware of the need for radio-active protection of personnel and the special hazards associated with a nuclear power plant site.

d. NFPA 27 - "Private Fire Brigade," d. NFPA 27 guidance was used in should be followed in organization, developing into the fire brigade training, and fire drills. This standard training program.

also is applicable for the inspection and maintenance of fire-fighting equipment. Among the standards referenced in this document, the APPENDIX E E4.1-8 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION following should be utilized.

NFPA 194 Standard for Screw Threads and Gaskets for Fire Hose Couplings NFPA 196 Standard for Fire Hose NFPA 197 Training Standard on Initial Fire Attacks NFPA 601 Recommended manual of Instructions and Duties for the Plant Watchman on Guard NFPA booklets and pamphlets listed on page 27-11 of Volume 8, 1971-72 are also applicable for good training references. In addition, courses in fire prevention and fire suppression which are recognized and/or spon-sored by the fire protection industry should be utilized.

C. QUALITY ASSURANCE PROGRAM C. Comply with intent:

Quality Assurance (QA) programs of Quality assurance for the fire protection applicants and contractors should be system is applied using existing developed and implemented to assure programs. The program was not that the requirements for design, applied in the earlier stages of design procurement, installation, and testing and and purchasing activities and cannot be administrative controls for the fire protec- retrofitted to them.

tion program for safety-related areas as Sargent & Lundy Quality Assurance defined in this Branch Position are satis-Program is applied to design control as fied. The program should be under the necessary to meet specification management control of the QA organiza-requirements via a unique project tion. The QA program criteria that apply instruction. Illinois Power Company to the fire protection program should and Baldwin Associates quality include the following:

assurance programs applied to procurement, installation, testing, and administrative controls as appropriate during construction and plant operations until the AmerGen acquisition. Future activities will be conducted in accordance with the Exelon Quality Assurance Topical Report.

Portions of the Quality Assurance Program, as delineated in Appendix A of the Quality Assurance Topical Report, apply to fire protection. This APPENDIX E E4.1-9 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION program includes the required provisions to ensure that the fire protection program is properly implemented, reviewed, and maintained throughout the life of the Clinton Power Station.

1. Design Control and Procurement 1. Comply with intent:

Document Control The design requirements of the Branch Measures should be established to assure Technical Position appear in the that all design-related guidelines of the specifications for equipment. Design Branch Technical Position are included in and procurement document approved design and procurement documents and procedures.

that deviations therefrom are controlled.

2. Instructions, Procedures, and Drawings 2. Comply:

Inspections, tests, administrative controls, Procedures to accomplish these fire drills, and training that govern the fire provisions have been developed and protection program should be prescribed implemented.

by documented instructions, procedures, or drawings and should be accomplished in accordance with these documents.

3. Control of Purchased Material, 3. Comply:

Equipment, and Services Procedures established by Illinois Measures should be established to assure Power Company and Baldwin Asso-that purchased material, equipment, and ciates assured that purchased material, services conform to the procurement equipment, and services conformed to documents. the procurement documents during construction and plant operations until the AmerGen acquisition. Future activi-ties will be conducted in accordance with the Exelon Quality Assurance Topical Report.

4. Inspection 4. Comply:

A program for independent inspection of Specifications require documented activities affecting fire protection should inspection by the installer. Illinois be established and executed by, or for, Power Company and Baldwin the organization performing the activity to Associates established programs for verify conformance with documented inspection of activities affecting fire installation drawings and test procedures protection during construction and plant for accomplishing the activities. operations until the AmerGen acquisi-tion. Future activities will be conducted in accordance with the Exelon Quality Assurance Topical Report.

APPENDIX E E4.1-10 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

5. Test and Test Control 5. Comply:

A test program should be established and Clinton Power Station has established implemented to assure that testing is test and test control programs in its performed and verified by inspection and quality assurance program.

audit to demonstrate conformance with design and system readiness requirements. The tests should be performed in accordance with written test procedures; test results should be properly evaluated and acted on.

6. Inspection, Test, and Operating Status 6. Comply:

Measures should be established to Clinton Power Station procedures provide for the identification of items that assure identification of items that have have satisfactorily passed required tests satisfactorily passed the required tests and inspections. and inspections.

7. Nonconforming Items 7. Comply:

Measures should be established to control Clinton Power Station procedures have items that do not conform to specified been established to govern identifica-requirements to prevent inadvertent use of tion and control of nonconforming installation. items.

8. Corrective Action 8. Comply:

Measures should be established to assure The Clinton Power Station Quality that conditions adverse to fire protection, Assurance Program establishes such as failures malfunctions, measures for corrective action on deficiencies, deviations, defective conditions adverse to fire protection.

components, uncontrolled combustible material, and nonconformance are promptly identified, reported, and corrected.

9. Records 9. Comply with intent:

Records should be prepared and Records associated with CPS Fire maintained to furnish evidence that the Protection Program are prepared and criteria enumerated above are being met maintained in accordance with the CPS for activities affecting the fire protection quality assurance programs.

program.

10. Audits 10. Comply:

Audits should be conducted and The CPS quality assurance program documented to verify compliance with the established well defined auditing fire protection program including design activities.

and procurement documents; instructions; procedures and drawings; and inspection and test activities.

APPENDIX E E4.1-11 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION D. GENERAL GUIDELINES FOR PLANT PROTECTION

1. Building Design a. Comply:

a. Plant layouts should be arranged to:

1. Isolate safety-related systems Safety-related equipment is either from unacceptable fire hazards. isolated protected as identified in the Fire Protection Evaluation Report and Safe Shutdown Analysis.

2. Alternatives: a. redundant The fire protection general safety-related systems that are arrangement drawings depict the subject to damage from a single plant layout and general location of fire hazard should be protected equipment. The equipment of by a combination of fire retardant redundant safe shutdown systems coatings and fire detection and are adequately protected from a suppression system, or b. a single fire hazard as documented separate system to perform the by the Safe Shutdown Analysis.

safety function should be provided.

b. In order to accomplish 1.a. above, b. Comply:

safety-related systems and fire A fire hazard analysis is contained hazards should be identified through-in the CPS FPER. Procedures out the plant. Therefore, a detailed have been developed to update the fire hazard analysis should be made.

FPER and to ensure that all design The fire hazards analysis should be changes will be reflected in the reviewed and updated as necessary.

FPER.

Additional fire hazards analyses should be done after any plant modifications.

For multiple reactor sites cable Not applicable.

spreading rooms should not be shared between reactors. Each cable spreading room should be separated from other areas of the plant by barriers (walls and floors) having a minimum fire resistance of three hours. Cabling for redundant safety divisions should be separated by walls having three hour fire barriers.

c. Alternative guidance for constructed c. Not applicable.

plants is shown in Section F.3, Cable Spreading Room.

APPENDIX E E4.1-12 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

d. Interior wall and structural d. Comply with intent:

components, thermal insulation Interior wall and structural aterials and radiation shielding components are noncombustible.

materials and sound-proofing should Minor amounts of combustibles are be non-combustible. Interior finishes used. Examples of these are should be non-combustible or listed nailers, seals, caulking, and joint by a nationally recognized testing fillers. These materials do not laboratory, such as Factory Mutual or present a hazard to safety-related Underwriters' Laboratory, Inc. for equipment. The thermal insulation, flame spread, smoke, and fuel radiation shielding and contribution of 25 or less in its use soundproofing materials are either configuration (ASTM E-84 Test),

noncombustible or their fire "Surface Burning Characteristics of resistance properties are evaluated Building Materials."

with the intent to minimize the fire hazard.

Most of the materials used in the original construction were within the limits of 25 when tested in accordance with the ASTM E-84 protocol. When replacement or new materials are selected, the fire hazard characteristics are reviewed using the results of appropriate testing. The fire test may be other than ASTM E-84, depending on the intended form and application of the material at CPS. For example, floor coverings will be evaluated and accepted if the critical radiant flux, tested in accordance with NFPA 253/ASTM E-648, is 0.45 watts/sq.cm. or greater and the maximum specific optical smoke density, tested in accordance with NFPA 258, is less than 450.

Floor coverings in areas containing systems or equipment required for safe shutdown of the plant are generally Class I material as defined in NFPA 101, or generally a flame spread rating of 25 or less as defined in ASTM E-84. For fire hazard analysis purposes, floor coatings are considered non-combustible if the material has a structural base of non-combustible material, with a nominal depth not APPENDIX E E4.1-13 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION over 1/8 inch thick, and has a flame spread rating not higher than 50 as defined in ASTM E-84. Exceptions to these guidelines are evaluated for acceptability by Engineering on a case-by-case basis.

Consistent with the guidelines of NUREG 0800, Revision 2, Section 9.5.1, the following materials are acceptable for use as interior finish without evidence of test and listing by a nationally recognized laboratory.

Plaster, acoustic plaster, gypsum plasterboard (gypsum; wallboard) either plain, wall-papered, orpainted with oil-or water-based paint; Ceramic tile, ceramic panels: Glass, glass blocks; Brick, stone, concrete blocks, plain or painted; Steel and aluminum panels, plain, or enameled; Vinyl tile, vinyl-asbestos tile, linoleum, or asphalt on concrete floors.

The noncombustible materials used at CPS are concrete and steel structural and radiation shielding materials, and the reflective metallic installation installed inside the drywell.

The following are examples of com-bustible materials utilized at CPS.

Silicone foam sealant is used for sealing penetrations through walls and floors. Fiberglass insulation with metal lagging or fiberglass blanket insulation is used for hot piping. Fiberglass insulation with white craft paper and foil reinforced with glass yarns is used for cold piping. HVAC ductwork is insulated with fiberglass insulation with white craft paper and foil reinforced vapor barrier. Foam plastic insulation is used for cold pipe insulation inside the containment and drywell and for insulating cold equipment. Phenolic foam insulation is used for piping APPENDIX E E4.1-14 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION and ductwork subjected to low temperatures. Materials installed to improve building comfort are carpeting and the fiberglass and melamine acoustical panels. The combustible components in the radiation shielding materials are the vinyl cover for the lead blanket and the rubber bladder for the water shield.

Acceptable alternate tests for floor coverings include NFPA-253 "Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source" and NFPA-258 "Standard Research Test Method for Determining Smoke Generation of Solid Materials".

e. Metal deck roof construction should e. Comply:

be noncombustible (see the building The materials used in metal deck materials directory of the Under-roofing design are non-combustible writer's Laboratory, Inc.) or listed as and meet the criteria of Factory Class 1 by Factory Mutual System Mutual Class 1 design and UL Approval Guide. Where combustible Class "A" construction.

material is used in metal deck roofing design, acceptable alternatives are (i) replace combustibles with non-combustible materials, (ii) provide an automatic sprinkler system, or (iii) provide ability to cover roof exterior and interior with adequate water volume and pressure.

f. Suspended ceilings and their f. Comply with intent:

supports should be of noncombustible Suspended ceilings and supports construction. Concealed spaces are constructed of non-combustible should be devoid of combustibles.

materials (non-combustible Adequate fire detection and suppres-acoustical tiles or metal eggcrate).

sion systems should be provided The fire classification for acoustical where full implementation is not tile is: flame spread 15 and smoke practicable.

developed 0; and for the plaster ceilings: flame spread 10, fuel contribution 0, and smoke devel-oped 0. Fire detection and manual extinguishing capabilities are pro-vided as detailed in Chapter 3.0 of the FPER.

APPENDIX E E4.1-15 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

g. High voltage-high amperage g. Comply:

transformers installed inside buildings All transformers located inside containing safety-related systems buildings are of the dry type.

should be of the dry type or insulated and cooled with noncombustible The oil filled main (MPTs), unit liquid. Safety-related systems that auxiliary (UATs), and reserve are exposed to flammable oil filled auxiliary power (RAT B) transformers should be protected transformers are located outdoors from the effects of a fire by: and are equipped with automatic deluge systems.

i. Replacing with dry transformers that are insulated and cooled Portions of Category 1 buildings with noncombustible liquid; or within 50 feet of an oil filled transformer are 3-hour fire barriers, ii. Enclosing the transformer with a except for the main bus duct feeds three-hour fire barrier and to the unit auxiliary transformers.

installing automatic water spray Oil filled transformers located protection.

farther than 50 feet from Category 1 buildings (RAT A and RATC) are equipped with fire detection systems.

h. Buildings containing safety-related h. Comply with intent:

systems having openings in Portions of Category 1 buildings exterior walls closer than 50 feet to within 50 feet of an oil filled flammable oil filled transformers transformer are 3-hour fire barriers, should be protected from the except for the main bus duct feeds effects of a fire by:

from the unit auxiliary transformers.

i. Closing of the opening to The turbine building also contains have fire resistance equal to safety-related cables and instru-three hours; ments, but these are not required ii. Constructing a three-hour fire for safe shutdown. Portions of the barrier between the turbine building within 50 feet of an transformers and the wall oil filled transformer are 3-hour fire openings; or barriers up to approximately 60 feet above grade elevation, except for iii. Closing the opening and grade the main bus duct feeds to the main providing the capability to and unit auxiliary transformers.

maintain a water curtain in case of fire. The transformers (except Main Power Transformers and RATs A &

C) and associated bus ducts are protected by an automatic deluge system initiated by heat detectors that annunciate in the main control room. Main Power Transformers A, B, & C are protected by deluge systems initiated automatically by sudden pressure and differential relay actuation, and manually by APPENDIX E E4.1-16 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION Operator after receiving the MPT fire detection alarm in the main control room. RAT A and RAT C utilitize heat detectors that annunciate in the main control room. In addition, oil retention berms and barrier walls between transformers are provided to prevent the spread of a fire.

As evaluated by a fire protection engineer, the construction of the bus duct assembly for the unit auxiliary transformer, as well as the bolted attachment of the duct to both sides of the wall, provides protection equivalent to that of a fire door or damper.

i. Floor drains, sized to remove i. Comply with intent:

expected fire-fighting water flow, Floor drains are provided in areas should be provided in those areas where fixed water fire suppression where fixed water fire suppression systems are installed.

systems are installed. Drains should also be provided in other areas where Water for controlling a fire can be hand hose lines may be used if such introduced virtually anywhere in the fire-fighting water could cause plant and a floor drain system has unacceptable damage to equipment been provided to reduce accumula-in the area. Equipment should be tion of water from fire suppression installed on pedestals, or curbs systems. Provisions, such as should be provided as required to pedestals for equipment and curbs contain water and direct it to floor around openings, have been pro-drains. (See NFPA 92M, "Water- vided, as required, to assure that proofing and Draining of Floors.") excess water is directed away from Drains in areas containing equipment, particularly safety-combustible liquids should have related equipment, and will run off provisions for preventing the spread into areas where it will not impair of fire throughout the drain system. the safe shut down of the plant. It Water drainage from areas which is not possible to mount some may contain radioactivity should be electrical equipment, such as sampled and analyzed before switchgear, on pedestals. (See discharge to the environment. In Section A.5 in this chapter.) A fire operating plants or plants under suppression effects analysis was construction, if accumulation of water performed to determine the conse-from the operation of new fire quences of spraying safe shutdown suppression systems does not create equipment with water, either from a unacceptable consequences, drains sprinkler system or a fire hose.

need not be installed. The analysis resulted in several required modifications in order to protect such equipment from the effects of initiation of fire suppres-APPENDIX E E4.1-17 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION sion measures and subsequent flooding. With the installation of the required modifications, it is concluded that initiation of either automatic or manual fire suppres-sion measures along with any associated buildup of fire protection water will not preclude safe shut-down of the plant. Drains have provisions for preventing the spread of fire through the drainage system. Drainage which is poten-tially radioactive goes to the liquid radwaste area where it is analyzed and processed.

j. Floors, walls, and ceilings enclosing j. Comply with intent:

separate fire areas should have Fire areas are enclosed by barriers minimum fire rating of three hours.

commensurate with the fire Penetrations in these fire barriers, hazards and protection within each including conduits and piping, should area, as defined in the FPER.

be sealed or closed to provide a fire-Openings in these rated barriers resistance rating at least equal to that are described in the FPER.

of the fire barrier itself. Door openings should be protected with Doors to vital areas are closed and equivalent rated doors, frames and locked in accordance with the hardware that have been tested and station security requirements.

approved by a nationally recognized These doors will alarm and laboratory. Such doors should be annunciate in the security control normally closed and locked or room if they are used for alarmed with alarm and annunciation unauthorized entry, exit, or set ajar.

in the control room. Penetrations for The locking of many doors would ventilation system should be interfere with the normal and safe protected by a standard "fire door operation of the plant. Doors that damper" where required. (Refer to should not be locked are provided NFPA 80, "Fire Doors and Windows") with self-closing devices. Rolling The fire hazard in each area should steel fire doors, which do not have be evaluated to determine barrier self-closing devices, are monitored requirements. If barrier fire every twenty-four hours or, if open resistance cannot be made adequate, for extended periods of time, then fire detection and suppression should appropriate compensatory mea-be provided, such as: sures will be taken in accordance

i. Water curtain in case of fire, with applicable CPS procedures.

Door openings are protected with ii. Flame retardant coatings, equivalent doors, frames and hardware tested and approved by a iii. Additional fire barriers. nationally recognized laboratory.

Deviations have been provided in the Safe Shutdown Analysis.

APPENDIX E E4.1-18 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

2. Control of Combustibles

a. Safety-related systems should be a. Comply with intent:

isolated or separated from Safety-related systems are isolated combustible materials. When this is or separated from combustibles.

not possible because of thenature of When this is not possible, protec-the safety system or the combustible tion is provided to prevent a fire material, special protection should be from defeating the ability to safely provided to prevent a fire from shut down the plant.

defeating the safety system function.

Such protection may involve a com-bination of automatic fire suppression, and construction capable of withstanding and containing a fire that consumes all combustibles present.

Examples of such combustible materials that may not be separable from the remainder of its system are:

1. Emergency diesel generator fuel 1. The diesel day tank rooms are oil day tanks separated from the diesel generator rooms by 1.9-hour barriers. An automatic wet-pipe suppression system is provided in each day tank room.

Curbing is provided in the day tank rooms that will contain 110% of the oil inventory. In addition, drain capacity allows for a 20-minute sprinkler system accumulation.

2. Turbine generator oil and 2. The turbine generator oil hydraulic control fluid systems. system is located in a non-safety-related building.

Portions of the system are provided with automatic sprinkler fire suppression. The hydraulic control fluid is a synthetic fire resistive fluid.

Some equipment in the turbine building is designated as safety-related in the Clinton design; however, none of this equipment has a safe shutdown-related function.

APPENDIX E E4.1-19 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

3. Reactor coolant pump lube oil 3. The reactor recirculation system. pumps nonpressurized lube oil systems are integral with the reactor recirculation pump motors except for 1 gallon automatic oilers which may be added to the lower bearing reservoir fill line.

Infrared flame detectors are provided in the area of the reactor recirculation pumps.

b. Bulk gas storage (either compressed b. Comply with intent:

or cryogenic) should not be permitted Bulk gas storage facilities are inside structures housing safety-provided remote from any safety-related equipment. Storage of related structures.

flammable gas such as hydrogen should be located outdoors or in Bulk storage of flammable gas is separate detached buildings so that a located outdoors in separate fire or explosion will not adversely facilities and away from any safety-affect any safety-related systems or related structures.

equipment. (Refer to NFPA 50A, "Gaseous Hydrogen Systems.") Care should be taken to locate high pressure gas storage containers with the long axis parallel to building walls.

This will minimize the possibility of wall penetration in the event of a container failure. Use of compressed gases (especially flammable and fuel gases) inside buildings should be controlled. (Refer to NFPA 6, "Industrial Fire Loss Prevention.")

APPENDIX E E4.1-20 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

c. The use of plastic materials should be c. Comply:

minimized. In particular, halognated The use of plastic materials is plastics such as polyvinyl chloride minimized.

(PVC) and neoprene should be used only when substitute non-combustible materials are not available. All plastic materials, including flame and fire retardant materials, will burn with an intensity and Btu production in a range similar to that of ordinary hydrocarbons. When burning, they produce heavy smoke that obscures visibility and can plug air filters, especially charcoal and HEPA. The haloginated plastics also release free chlorine and hydrogen chloride when burning which are toxic to humans and corrosive to equipment.

d. Storage of flammable liquids should, d. Comply:

as a minimum, comply with the Administrative procedures covering requirements of NFPA 30, the storage and handling of Flammable and Combustible Liquids flammable liquids have been Code.

developed.

3. Electric Cable Construction,Cable Trays, and Cable Penetrations

a. Only noncombustible materials a. Comply:

should be used for cable tray All cable trays are constructed of construction.

steel.

b. See Section F.3 for fire protection b. See Section F.3 for responses.

guidelines for cable spreading rooms.

APPENDIX E E4.1-21 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

c. Automatic water sprinkler systems c. Partial compliance:

should be provided for cable trays Automatic suppression systems outside the cable spreading room.

will be installed as required by the Cables should be designed to allow Fire Protection Evaluation Report wetting down with deluge water and the Safe Shutdown Analysis.

without electrical faulting. Manual Automatic sprinkler systems are hose stations and portable hand not provided for cable trays outside extinguishers should be provided as the cable spreading room, based backup. Safety-related equipment in on a detailed review of heavy the vicinity of such cable trays, that cable tray concentration areas in does not itself require water fire Category 1 buildings. Cables are protection, but is subject to designed to withstand wetting unacceptable damage from sprinkler without electrical failure. The water discharge, should be protected justification for not providing from sprinkler system operation or sprinkler systems for cable trays in malfunction. When safety-related areas outside the cable spreading cables do not satisfy the provisions of rooms is:

Regulatory Guide 1.75, all exposed cables should be covered with an approved fire retardant coating and a fixed automatic water fire suppression system should be provided.

1. Fire detection is provided in areas of high cable concen-tration associated with safe shutdown cables.

2. Cable tray loadings are low.

3. Use of solid bottom cable trays with all instrumentation cable trays totally enclosed.

4. Low fire loading in the fire zone.

5. Cables are generally flame retardant and nonpropagating per IEEE-383.

6. Conservative separation per IEEE-384.

Conformance with Regulatory Guide 1.75 is covered in Subsections 7.1.2.6.19 and 8.1.6.1.14 of the USAR.

Manual hose stations and portable hand extinguishers are provided throughout the plant. Their locations are shown on the "b" APPENDIX E E4.1-22 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION series figures in the Fire Protection Evaluation Report.

Safe shutdown equipment that can be subjected to unacceptable damage from sprinkler water discharge is protected from sprinkler system operation or malfunction, as documented in the Fire Suppression Effects Analysis, calculation 01FP14.

d. Cable and cable tray penetration of d. Comply with intent:

fire barriers (vertical and horizontal)

Conduit and cable tray should be sealed to give protection at penetrations of fire barriers are least equivalent to that fire barrier.

sealed with fire stops of a rating The design of fire barriers for equivalent with that of the fire horizontal and vertical cable trays barrier, except as noted in should, as a minimum, meet the Appendix F, Section 4.2.2.22.

requirements of ASTM E-119, "Fire Test of Building Construction and A deviation has been requested Materials," including the hose stream from the NRC such that the 325°F test. Where installed penetration temperature end point limitation seals are deficient with respect to fire on the unexposed side of cable resistance, these seals may be insulation may be exceeded.

protected by covering both sides with an approved fire retardant material.

The adequacy of using such material should be demonstrated by suitable testing.

e. Fire breaks should be provided as e. Comply:

deemed necessary by the fire Fire breaks are provided as hazards analysis. Flame or flame required by the Fire Protection retardant coatings may be used as a Evaluation Report and the Safe fire break for grouped electrical Shutdown Analysis. All vertical cables to limit spread of fire in cable cable tray risers are provided with ventings. (Possible cable derating fire breaks where they penetrate a owing to use of such considered floor/ceiling. Fire breaks are also during design.)

provided within the PGCC in the control room as deemed necessary by GE Licensing Topical Report NED0-10466-A.

APPENDIX E E4.1-23 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

f. Electrical cable constructions should, f. Comply:

as a minimum, pass the current IEEE Cables used are of EPR/hypalon No. 383 flame test. (This does not or tefzel construction, which is imply that cables passing this test will certified as having passed the not require additional fire protection.)

IEEE-383 flame test, and is flame For cable installation in operating retardant with self-extinguishing plants under construction that do not characteristics. A small amount of meet the IEEE No. 383 flame test cables furnished by manufacturers requirements, all cables must be for their equipment (e.g., turbine covered with an approved flame control cables) do not meet retardant coating and properly IEEE-383 requirements. Also, fire derated.

detection, lighting, and communi-cation cabling does not meet IEEE-383 requirements. However, these cables are a small quantity compared to the total quantity of cables installed; they will have a negligible impact.

g. To the extent practical, cable g. Comply.

construction that does not give off corrosive gases while burning should be used.

h. Cable trays, raceways, conduit, h. Comply:

trenches, or culverts should be used Only cables occupy cable trays only for cables. Miscellaneous and conduits. Piping is not routed storage should not be permitted, nor through cable trenches or culverts.

should piping for flammable or com-Piping associated with flammable bustible liquids or gases be installed or combustible liquids or gases is to these areas. Installed equipment in not routed in the vicinity of safety-cable tunnels or culverts need not be related cables.

removed if they present no hazard to the cable runs as determined by the fire hazards analysis.

i. The design of cable tunnels, culverts, i. Comply with intent:

and spreading rooms should provide Venting is described in the CPS for automatic or manual smoke Smoke Removal Plan.

venting as required to facilitate manual fire fighting capability.

APPENDIX E E4.1-24 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

j. Cables in the control room should be j. Comply with intent:

kept to a minimum necessary for Cables in the control room are kept operation of the control room. All to the minimum necessary for cables entering the control room operation of the control room.

should terminate there. Cables Generally, cables entering the should not be installed in floor control room terminate there. The trenches or culverts in the control control room is part of the Power room. Existing cabling installed in Generation Control Complex concealed floor and ceiling spaces (PGCC) designed by General should be protected with an automatic Electric. The design of the PGCC total flooding Halon system.

is addressed in Licensing Topical Report NEDO-10466-A. A Halon fire suppression system automatically initiated by thermal detectors is provided as part of the PGCC.

4. Ventilation

a. The products of combustion that need a. Comply:

to be removed from a specific fire In the event of a fire, the situation area should be evaluated to will be thoroughly evaluated before determine how they will be controlled.

venting the area, and venting will Smoke and corrosive gases should take place under the direction and generally be automatically discharged control of cognizant personnel.

directly outside to a safe location.

The CPS Smoke Removal Plan Smoke and gases containing identifies acceptable methods of radioactive materials should be smoke removal.

monitored in the fire area to determine if release to the In most cases throughout the plant, environment is within the permissible ventilation systems were not limits of the plant Technical specifically designed for Specifications. The products of smoke/heat removal, but for the combustion which need to be ventilation requirements of the removed from a specific fire area areas that they serve. However, should be evaluated to determine how these systems may aid in smoke they will be controlled. removal once a fire is extinguished.

Effluent from areas that contain radioactive or potentially radio-active materials that are discharged to the outdoors through ventilation are constantly monitored.

APPENDIX E E4.1-25 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

b. Any ventilation system designed to b. Comply:

exhaust smoke or corrosive gases A single failure or inadvertent should be evaluated to ensure that operation of any ventilation system inadvertent operation or single will not affect habitability or present failures will not violate the controlled a hazard to the public. Ventilation areas of the plant design. This systems which are related to requirement includes containment habitability of personnel are under functions for protection of the public the control of the cognizant and maintaining habitability for personnel.

operations personnel.

c. The power supply and controls for c. Comply:

mechanical ventilation systems The power supply and controls for should be run outside the fire area mechanical ventilation systems are served by the system.

run outside the area served by the system. Some ventilation systems, such as area recirculation cooling systems, are located inside the fire area. These systems are not used for smoke removal.

d. Fire suppression systems should be d. Comply with intent:

installed to protect charcoal filters in To protect the charcoal filters accordance with Regulatory against the effects of iodine decay Guide 1.52, "Design Testing and heat after a postulated accident, Maintenance Criteria for Atmospheric the control room (VC), the standby Cleanup Air Filtration."

gas treatment (VG), and the drywell purge (VQ) filter units are equipped with heat sensors that auto-matically annunciate in the control room, as well as manually operated water spray systems. In addition the VG filter units are protected with low-flow charcoal adsorbent cooling fans.

The temperature detection panels are not in full compliance with the NFPA Code for fire detection systems, as the primary function is for adsorbent cooling with a secondary function of fire detection.

These panels are not UL listed.

NFPA Code conformance is documented in the CPS NFPA Code Conformance Evaluation.

APPENDIX E E4.1-26 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

e. The fresh air supply intakes to areas e. Comply:

containing safety-related equipment The intake and exhaust of each or systems should be located remote area are physically remote to from the exhaust air outlets and prevent recirculation.

smoke vents of other fire areas to minimize the possibility of contaminating the intake air with the products of combustion.

f. Stairwells should be designed to f. Comply with intent:

minimize smoke infiltration during a Stairwells are designed to fire. Staircases should serve as minimize smoke infiltration during a escape routes and access routes for fire. There is at least one enclosed fire fighting. Fire exit routes should stairway located in or within quick be clearly marked. Stairwells, access to each building, except the elevators, and chutes should be containment building. Elevators enclosed in masonry towers with a are enclosed in 1.9-hour rated minimum fire rating of three hours and masonry towers and have automatic fire doors at least equal to 1-1/2-hour fire rated hoistway the enclosure construction, at each doors. Enclosed stairways have opening into the building.

minimum 1.9-hour fire rated walls Elevators should not be used during and 1-1/2-hour automatic closing fire emergencies. Where stairwells or fire rated doors. Some elevators cannot be enclosed in unprotected steel is located inside three-hour fire rated barriers with the stairwells.

equivalent fire doors, escape and Three fire dampers installed in access routes should be established ducts penetrating Radwaste by prefire plan and practiced in drills Building Stairwell walls may not by operating and fire brigade completely close under designed personnel.

airflow due to their respective airflow velocities. The ducts containing these fire dampers have no openings in the stairwell. Since the sheet metal duct can withstand a one-hour fire, the ability of the stairway to provide access and egress for approximately one hour during a fire is not jeopardized.

Where stairwells or elevators are not enclosed in 1.9-hour fire rated barriers, access and egress routes are established and included in fire brigade procedures and practiced in drills by operating and fire brigade personnel.

APPENDIX E E4.1-27 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

g. Smoke and heat vents may be useful g. Comply with intent:

in specific areas such as cable Smoke vents are used for the spreading rooms and diesel fuel oil turbine building only. Smoke and storage areas and switchgear rooms.

heat vents will not be used for the When natural-convection ventilation is areas identified due to building used, a minimum ratio of 1 sq. ft. of security and missile protection. In venting area per 200 sq. ft. of floor addition, many of these areas are area should be provided. If forced-located in the lower levels of the convection ventilation is used, 300 plant, making gravity venting cfm should be provided for every 200 unfeasible. These areas are sq. ft. of floor area. See NFPA No.

provided with mechanical 204 for additional guidance on smoke ventilation. The flow rates are control.

based on HVAC requirements and in most cases are less than 300 cfm per 200 ft2. The ventilation systems will be used for post-fire purging as required, for which they are adequate.

The CPS Smoke Removal Plan provides acceptable methods for removing products of combustion from fire areas.

h. Self-contained breathing apparatus, h. Comply:

using full face positive pressure Self-contained breathing apparatus masks, approved by NIOSH (SCBA) with approved full-face (National Institute for Occupational positive pressure masks approved Safety and Health-approval formerly by NIOSH with a minimum I-hour given by the U.S. Bureau of Mines) operating life have been supplied should be provided for fire brigade, for fire brigade personnel. The damage control, and control room Radiation Protection Department personnel. Control room personnel controls and provides full-face may be furnished breathing air by a masks SCBA for fire brigade use manifold system piped from a and controls all spare bottles.

storage reservoir if practical. Service or operating life should be a A minimum 6-hour reserve supply minimum of one-half hour for the of control room breathing air is self-contained units. furnished by a manifold breathing system.

At least two extra air bottles should be located onsite for each self- Two extra air bottles are contained breathing unit. In addition, maintained on the site for each fire an onsite six-hour supply of reserve brigade SCBA. A 6-hour air supply air should be provided and arranged is maintained for the reserve air to permit quick and complete requirement.

replenishment of exhausted supply air bottles as they are returned. If compressors are used as a source of breathing air, only units approved for APPENDIX E E4.1-28 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION breathing air should be used.

Special care must be taken to locate the compressor in areas free of dust and contaminants.

i. Where total flooding gas extinguish- i. Comply:

ing systems are used, area intake The ventilation air intake and and exhaust ventilation dampers exhaust dampers located in the fan should close upon initiation of gas rooms above the diesel generator flow to maintain necessary gas con-close upon initiation of the CO2 centration. (See NFPA 12, "Carbon system. The can be opened Dioxide Systems," and 12A, "Halon manually for post-fire purging.

1301 Systems.")

In addition, the ventilation systems in areas served by Halon systems are isolated upon initiation to achieve and maintain Halon concentration.

5. Lighting and Communication 5. Comply:

See USAR Sections 9.5.1 and 9.5.3.

Lighting and two-way voice communi- Communication and emergency lighting cation are vital to safe shutdown and are provided throughout the station as emergency response in the event of fire. noted below:

Suitable fixed and portable emergency lighting and communication devices should be provided to satisfy the following requirements:

a. Fixed emergency lighting should a. Comply with intent:

consist of sealed beam units with Fixed sealed-beam lighting units individual eight hour minimum with 8-hour minimum battery battery power supplies.

supplies are provided for manned workstations and remote manual action locations needed for safe shutdown and the credited access and egress paths thereto.

Emergency lighting consisting of 1.5-hour minimum battery supplies units and 125-Vdc incandescent light fixtures are provided in other areas of the plant for evacuation of personnel, which is consistent with NUREG-0800 and NFPA-101.

APPENDIX E E4.1-29 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

b. Suitable sealed beam battery b. Comply:

powered portable hand lights should Suitable 8-hour sealed beam be provided for emergency use.

battery powered portable hand lights are provided for one-time remote manual actions and access and egress paths thereto.

c. Fixed emergency communication c. Comply:

should use voice powered headsets Sound-powered phone jacks are at preselected stations.

installed at selected locations throughout the plant for voice powered communication.

d. Fixed repeaters installed to permit d. Comply with intent:

use of portable radio communication Fixed repeaters are not protected units should be protected from from fire damage but are backed exposure to fire damage.

up by the three independent systems: PA, telephone, and sound powered phones.

E. FIRE DETECTION AND SUPPRESSION

1. Fire Detection

a. Fire detection systems should, as a a. Comply with intent:

minimum, comply with NFPA 72D, The fire detection system for the "Standard for the Installation, station complies with NFPA 72D Maintenance and Use of Proprietary with deviation as documented in Protective Signaling Systems."

the CPS NFPA Code Conformance Deviations from the requirements of Evaluation.

NFPA 72D should be identified and justified.

b. Fire detection systems should give b. Comply with intent:

audible and visual alarm and The fire detection system for the annunciation in the control room.

station gives audible and visual Local audible alarms should also alarm and annunciation in the sound at the location of the fire.

control room. Local audible alarms are only provided for fire suppression systems excluding the filter train deluge and the FLEX diesel generator systems.

c. Fire alarms should be distinctive c. Comply with exception:

and unique. They should not be Audible fire alarms are distinctive capable of being confused with any and unique except for some panel other plant system alarms.

alarms in the fuel and turbine buildings, as documented in the CPS NFPA Code Conformance Evaluation.

APPENDIX E E4.1-30 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

d. Fire detection and actuation systems d. Comply with intent:

should be connected to the plant The fire detection system for the emergency power supply.

station is connected to the station Class 1E power system. The fire suppression systems in safety related buildings are connected to the station Class 1E power system.

The non-safety-related filter train deluge systems, with the exception of those for drywell purge, are connected to the station Class 1E power system. For those exceptions, the deluge valves may be operated manually as well as via electric operator.

2. Fire Protection Water Supply Systems

a. An underground yard fire main loop a. Comply with intent:

should be installed to furnish The underground yard fire main anticipated fire water requirements.

loop is designed and installed in NFPA 24, Standard for Outside compliance with applicable Protection, gives necessary NFPA 24 requirements. NFPA guidance for such installation. It code conformance is documented references other design codes and in the CPS NFPA Code standards developed by such organi-Conformance Evaluation.

zations as the American National Standards Institute (ANSI) and the Unlined carbon steel pipe is American Water Works Association provided in the underground yard (AWWA). Lined steel or cast iron loop. Possible tuberculation of pipe should be used to reduce pipe is accounted for in the internal tuberculation. Such tuber- hydraulic calculations by using a culation deposits in an unlined pipe conservative C-factor of 75. The over a period of years can signifi- calculations demonstrate adequate cantly reduce water flow through the fire protection water supply during combination of increased friction and the life of the plant.

reduced pipe diameter. Means for treating and flushing the systems should be provided.

APPENDIX E E4.1-31 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION Approved visually indicating Comply:

sectional control valves, such as Sectional control valves with post Post Indicator Valves, should be indicators allow the isolation of any provided to isolate portions of the one section without affecting the main for maintenance or repair balance of the system.

without shutting off the entire system.

Visible location marking signs for underground valves are acceptable.

Alternative valve position indicators should also be provided.

For operating plants, fire main system piping that can be isolated from service or sanitary water system piping is acceptable.

b. A common yard fire main loop may b. Not applicable:

serve multiunit nuclear power plant The Clinton Power Station utilizes sites, if cross-connected between a single fire main loop with section units. Sectional control valves isolation valves.

should permit maintaining independence of the individual loop around each unit. For such installa-tions, common water supplies may also be utilized.

The water supply should be sized for the largest single expected flow. For multiple reactor sites with widely separated plants (approaching one mile or more), separate yard fire main loops should be used.

Sectionalized systems are acceptable.

c. If pumps are required to meet c. Comply with intent:

system pressure or flow Normally the fire protection system requirements, a sufficient number of is pressurized by a jockey pump pumps should be provided so that fed from the filtered water system.

100% capacity will be available with one pump inactive (e.g., three 50% Fire protection is provided by two pumps or two 100% pumps). The 100% capacity (2500 gpm each) connection to the yard fire main loop diesel driven fire pumps.

from each fire pump should be The connections to the yard main widely separated, preferably located loop from each fire pump are on opposite sides of the plant. Each widely separated, located on pump should have its own driver with opposite sides of the screen house, independent power supplies and and diverge as they connect to the control. At least one pump (if not underground yard main.

powered from the emergency diesels) should be driven by non- Pumps and drivers are located in APPENDIX E E4.1-32 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION electrical means, preferably diesel separate rooms. The fire pump engine. Pumps and drivers should located at the north end of the be located in rooms separated from screen house is enclosed in a the remaining pumps and equipment 3-hour fire rated wall on three by a minimum three-hour fire wall. sides. The exterior wall is not rated. The ceiling in this zone is rated; however, the floor is not.

The walls surrounding the fire pump at the south end of the screen house are not rated; however, a separation distance of approximately 140 feet exists between the two fire pump rooms.

Approximately half of this distance was intended for Unit 2 use and now contains minimal combustibles.

Alarms indicating pump running, The recommended alarms are driver availability, or failure to start provided in the control room.

should be provided in the control An automatic water suppression room.

system is provided in each fire Details of the fire pump installation pump room.

should, as a minimum, conform to The fire pump installation is in NFPA 20, "Standard for the accordance with applicable Installation of Centrifugal Fire NFPA 20 requirements. NFPA Pumps."

code conformance is documented in the CPS NFPA Code Conformance Evaluation.

d. Two separate reliable water supplies d. Not applicable. See Section 2.f.

should be provided. If tanks are used, two 100% (minimum of 300,000 gallons each) system capacity tanks should be installed.

They should be so interconnected that pumps can take suction from either or both. However, a leak in one tank or its piping should not cause both tanks to drain. The main plant fire water supply capacity should be capable of refilling either tank in a minimum of eight hours.

Common tanks are permitted for fire and sanitary or service water storage. When this is done, however, minimum fire water storage requirements should be dedicated by means of a vertical standpipe for APPENDIX E E4.1-33 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION other water services.

e. The fire water supply (total capacity e. Comply with intent:

and flow rate) should be calculated The inventory of water in the on the basis of the largest expected ultimate heat sink allocated to fire flow rate for a period of two hours, protection is 900,000 gallons.

but not less than 300,000 gallons.

For safety-related buildings, the fire This flow rate should be based pump flow rate is based on the (conservatively) on 1,000 gpm for sprinkler flow requirements of manual hose streams plus the NFPA 13 and 15 plus 500 gpm for greater of:

manual hose streams.

1. All sprinkler heads opened and flowing in the largest designed fire area; or

2. The largest open head deluge system(s) operating.

f. Lakes or fresh water ponds of f. Comply:

sufficient size may qualify as sole A common water supply is used for source of water for fire protection, but fire protection and the ultimate heat require at least two intakes to the sink, but the size is adequate for pump supply. When a common both. Each pump has its own water supply is permitted for fire supply tunnel and screens. Under protection and the ultimate heat sink, no circumstances is the safety the following conditions should also function of the ultimate heat sink be satisfied:

compromised.

1. The additional fire protection 1. Comply:

water requirements are Fire protection requirements designed into the total storage were designed into the capacity; and storage capacity of the ultimate heat sink.

2. Failure of the fire protection 2. Comply:

system should not degrade the Failure of the fire protection function of the ultimate heat system does not degrade the sink.

function of the ultimate heat sink.

g. Outside manual hose installation g. Comply with intent:

should be sufficient to reach any Hydrants are provided in the area location with an effective hose of the power block at a spacing of stream. To accomplish this, approximately 325 feet. In other hydrants should be installed areas of the plant (Unit 2 excava-approxi-mately every 250 feet on the tion area) distances approach yard main system. The lateral to 400 feet. Sufficient hose lengths each hydrant from the yard main are provided in hose houses to should be controlled by a visually permit fire fighters to reach all indicating or key operated (curb) areas between hydrants. Hydrants APPENDIX E E4.1-34 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION valve. A hose house, equipped with are controlled by individual curb hose and combination nozzle, and box valves. Hose houses are other auxiliary equipment provided for all hydrants in the recommended in NFPA 24, "Outside power block area. Additional hose Protection," should be provided as houses are provided for the needed but at least every 1,000 feet. majority of hydrants outside the power block area. Distances never exceed 1000 feet between hose houses. All hose houses are equipped in accordance with applicable NFPA 24 requirements.

Threads compatible with those used Threads compatible with those by local fire departments should be used by local fire departments are provided on all hydrants, hose provided for hydrants, hose couplings, and standpipe risers. couplings, and standpipe risers, or adapters are available.

3. Water Sprinklers and Hose Standpipe Systems

a. Each automatic sprinkler system and a Comply with intent:

manual hose station standpipe should .

All sprinkler systems, with the have an independent connection to the exception of those in the diesel plant underground water main. Headers generator storage tank rooms, fed from each end are permitted inside are supplied by ring headers that buildings to supply multiple sprinkler and are supplied from redundant standpipe systems. When provided, connections to the yard main.

such headers are considered an The diesel generator storage extension of the yard main system. The tank rooms and day tank rooms header arrangement should be such that are not supplied by redundant no single failure can impair both the connections; however, adequate primary and backup fire protection hose lengths installed at nearby systems.

hose stations can be coupled together to attain a 150 foot maximum length, and permit secondary suppression capability in the event of a pipe break.

Those systems connected directly to the yard main are independent. Multiple sprinkler and standpipe systems are supplied from independent connections to the building ring headers.

OS&Y valves are provided for each sprinkler and standpipe system. A water flow alarm is also provided for each sprinkler and standpipe with the two APPENDIX E E4.1-35 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION exceptions. An alarm is not provided for the standpipe feeding two hose stations in the gate house, which is not part of the power block, and flow switch IFS FP054, which is located on one of the three standpipes feeding containment hose stations, will alarm at a water flow of approximately 250 gpm.

This is acceptable for the following reasons:

The piping is primarily of welded construction, which minimizes leakage.

Access to the containment is normally restricted and inadvertent operation of the hoses is not likely.

The flow switch will identify a pipe break in the hose station with a flow of approximately 250 gpm.

If there is significant flow in the system, the main fire pumps will initiate, thereby annunciating in the control room.

Each sprinkler and standpipe system Safe shutdown-related equipment that should be equipped with OS&Y does not itself require sprinkler water (outside screw and yoke) gate valve, fire protection, but is subject to or other approved shutoff valve, and unacceptable damage if wetted by water flow alarm. Safety-related sprinkler water discharge, will be equipment that does not itself require protected by water shields or baffles.

sprinkler water fire protection, but is subject to unacceptable damage if wetted by sprinkler water discharge should be protected by water shields or baffles.

APPENDIX E E4.1-36 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

b. All valves in the fire water systems b. Comply with intent:

should be electrically supervised. All main isolation valves will be The electrical supervision signal electrically supervised or adminis-should indicate in the control room tratively controlled. The isolation and other appropriate command valves for sprinkler systems, except locations in the plant. (See for the filter train deluge systems, NFPA 26, "Supervision of Valves.") will be electrically supervised. The When electrical supervision of fire isolation valve for the FLEX diesel protection valves is not practical, an generator system is not electrically adequate management supervision supervised but is locked open and program should be provided. Such monitored by administrative a program should include locking procedures. The interior loop valves open with strict key control; isolation valves and those for tamper-proof seals; and periodic standpipes will not be electrically visual check of all valves. supervised, but will be monitored by administrative procedures.

c. Automatic sprinkler systems should, c. Comply with intent:

as a minimum, conform to require- The automatic sprinkler systems ments of appropriate standards such conforms, with deviations, to all as NFPA 13, "Standard for the applicable NFPA codes, including Installation of Sprinkler Systems," NFPA 13 and 15, and include com-and NFPA 15, "Standard for Water ponents approved by a nationally Spray Fixed Systems." recognized laboratory such as UL, where practical. NFPA code conformance including deviations is documented in the CPS NFPA Code Conformance Evaluation.

d. Interior manual hose installation d. Comply with intent:

should be able to reach any location The standpipe system will conform with at least one effective hose to the appropriate requirements of stream. To accomplish this, NFPA 14. All areas in the plant can standpipes with hose connections be reached by at least one hose equipped with a maximum of 75 feet stream. Hose stations have a of 1-1/2 inch woven jacket lined fire maximum of 100 feet of 1-1/2-inch hose and suitable nozzles should be hose with suitable spray nozzles.

provided in all buildings, including Two hose stations (located outside containment, on all floors and the main steam tunnel and outside should be spaced at not more than the control room) have an additional 100 foot intervals. Individual 50 feet of hose stored nearby to standpipes should be of at least 4 provide adequate coverage. NFPA inch diameter for multiple hose code conformance is documented in connections and 2-1/2 inch diameter the CPS NFPA Code Conformance for single hose connections. These Evaluation.

systems should follow the requirements of NFPA No. 14 for Standpipes are a minimum of sizing, spacing, and pipe support 4 inches in diameter for multiple-requirements. hose connections and a minimum of 2.5 inches in diameter for a single-hose connection.

APPENDIX E E4.1-37 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION Hose stations should be located Hose stations are located to provide outside entrances to normally accessibility and coverage to all unoccupied areas and inside areas of the plant with the exception normally occupied areas. Stand- of the manually inaccessible pipe pipes serving hose stations in areas tunnel in Fire Zone A-3f, which is housing safety-related equipment inaccessible for manual fire fighting should have shutoff valves and and is provided with automatic pressure reducing devices (if suppression. A second exception applicable) outside the area. exists for drywell Zone C-1, where coverage is provided only for the two recirculation water pumps. One hose station is located inside the drywell wall. An isolation valve is provided to fully isolate this station.

All hose standpipes have shutoff valves.

e. The proper type of hose nozzle to e. Comply:

be supplied to each area should be Consideration was given to the type based on the fire hazard analysis.

of fire hazard and the safety of The usual combination equipment in the selection of hose spray/straight stream nozzle may nozzles. Electrically safe hose cause unacceptable mechanical nozzles provided at locations where damage (for example, the delicate electrical equipment or cabling is electronic equipment in the control located.

room) and be unsuitable.

f. Certain fires such as those involving f. Not applicable.

flammable liquids respond well to Clinton design does not utilize foam foam suppression. Consideration systems, but instead utilizes water, should be given to use of any of the CO2, and Halon systems.

available foams for such specialized protection application. These include the more common chemical and mechanical low expansion foams, high expansion foam, and the relatively new aqueous film forming foam (AFFF).

4. Halon Suppression Systems 4. Comply with intent:

The use of Halon fire extinguishing The Halon 1301 systems provided in the agents should, as a minimum, comply plant are designed and installed to the with the requirements of NFPA 12A and applicable requirements of NFPA 12A.

12B, "Halogenated Fire Extinguishing NFPA code conformance is documented in Agent Systems - Halon 1301 and the CPS NFPA Code Conformance Halon 1211." Only UL or FM approved Evaluation.

agents should be used.

In addition to the guidelines of NFPA Inspection and maintenance procedures 12A and 12B, preventative maintenance will be conducted by authorized plant APPENDIX E E4.1-38 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION and testing of the systems, including personnel. Halon storage tank weight and check weighing of the Halon cylinders, pressure checks are performed periodically should be done at least quarterly. to ensure adequate system supply Particular consideration should also be The Halon 1301 system for the Auxiliary given to: Electric Equipment Room Panel (781' Control) is designed for total flooding and meets a Halon concentration of not less than 10% maintained for 10 minutes.

The Halon 1301 system for the Main Control Room Panels (800' Control) is designed for total flooding under floor of each protected MCR panel with a minimum Halon concentration of 6% by volume with 10 seconds of bottle initiation and sustained concentration of greater than or equal to 6% by volume after ten minutes.

This system is set to discharge a second bottle with similar concentration and soak time within a few minutes of the first bottle.

a. Minimum required Halon concentration and soak time;

b. Toxicity of Halon; and

c. Toxicity and corrosive characteristics of thermal decomposition products of Halon.

5. Carbon Dioxide Suppression Systems 5. Comply:

The use of carbon dioxide extinguishing All CO2 systems will conform to the systems should, as a minimum, comply applicable requirements of NFPA 12.

with the requirements of NFPA 12, NFPA code conformance is documented in "Carbon Dioxide Extinguishing Systems." the CPS NFPA Code Conformance Evaluation.

Particular consideration should also be given to:

a. Minimum required CO2 The CPS CO2 system was designed to concentration and soak time; comply minimum NFPA 12 requirements for CO2 concentration and soak time.

b. Toxicity of CO2; Provisions (horns, lights, signage) for

c. Possibility of secondary thermal personnel safety were installed. Thermal shock (cooling) damage; shock and overpressurization versus

d. Offsetting requirements for venting sealing have been accounted for.

during CO2 injection to prevent over- The CO2 System for each Diesel Generator pressurization versus sealing to (Division 1, 2, and 3) room is designed for prevent loss of agent; APPENDIX E E4.1-39 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION total flooding and was tested to verify the

e. Design requirements from over-design concentration minimum of 34% CO2 pressurization; and was obtained within 1 minue and maintained for 10 minutes.

The CO2 System for the Main Turbine Exciter Enclosures is designed for local application with liquid CO2 discharged at the nozzles for a minimum of 30 seconds, with the CO2 discharge blanketing the protected hazard.

f. Possibility and probability of CO2 Procedures have been written to caution systems being out-of-service personnel who will be working in areas because of personnel safety protected by CO2 systems.

consideration. CO2 systems are disarmed whenever people are present in an area so protected.

Areas entered frequently (even though duration time for any visit is short) have often been found with CO2 systems shut off.

6. Portable Extinguishers 6. Comply:

Fire extinguishers should be provided in Portable fire extinguishers are provided accordance with guidelines of NFPA 10 and will conform to the applicable and 10A, "Portable Fire Extinguishers requirements of NFPA 10. NFPA code Installation, Maintenance and Use." Dry conformance is documented in the CPS chemical extinguishers should be NFPA Code Conformance Evaluation.

installed with due consideration given to cleanup problems after use and possible adverse effects on equipment installed in the area.

F. GUIDELINES FOR SPECIFIC PLANT AREAS

1. Primary and Secondary Containment a Normal Operation a. Comply with intent:

Fire protection requirements for the Fire protection is provided based on primary and secondary containment the Fire Protection Evaluation areas should be provided on the Report.

basis of specific identified hazards.

For example:

APPENDIX E E4.1-40 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

i. Lubricating oil or hydraulic fluid i. Each reactor recirculation system for the primary coolant pump motor utilizes self-pumps; lubricating bearings with the lubricating oil cooled by cooling coils installed within the reservoirs. A pressurized oil system is not used.

Infrared fire detection is provided for each pump with alarm and annunciation in the control room. All cables except those attached beneath the reactor or those for RR pump vibration instrumentation are in raceways.

ii. Cable tray arrangements and ii. Linear thermal detectors with cable penetrations; and alarm and annunciation in the control room are provided for all cable trays containing safe shutdown cables in primary containment outside the drywell. In the same area all safety related cable trays greater than approximately 40% full are provided with linear thermal detectors.

iii. Charcoal filters. iii. Not applicable. No charcoal filters are located in the primary or secondary containment.

Fire suppression systems Fire suppression systems should be provided based on have been provided based on the fire hazard analysis. the FPER.

Fixed fire suppression capability Portable fire extinguishers and should be provided for hazards hose stations are provided for that could jeopardize safe plant manual firefighting in both shutdown. Automatic sprinklers primary and secondary are preferred. An acceptable containment. The atmosphere alternate is automatic gas of the reactor containment is (Halon or CO2) for hazards not inerted during plant identified as requiring fixed operation.

suppression protection.

An enclosure may be required to confine the agent if a gas system is used. Such enclosures should APPENDIX E E4.1-41 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION not adversely affect safe shutdown, or other operating equipment in containment.Automatic fire suppression capability need not be provided in the primary containment atmospheres that are inerted during normal operation. However, special fire protection requirements during refueling and maintenance operations should be satisfied as provided below.

b. Refueling and Maintenance b. Comply with intent:

Refueling and maintenance Procedures are in place which operations in containment may establish the controls to ensure introduce additional hazards such as adequate fire protection during contamination control materials, maintenance and refueling decontamination supplies, wood operations.

planking, temporary wiring, welding, and flame cutting (with portable compressed fuel gas supply).

Possible fires would not necessarily be in the vicinity of fixed detection and suppression systems.

Management procedures and con-trols necessary to assure adequate fire protection are discussed in Section 3a.

Equivalent protection for portable Hose stations and portable systems should be provided if it is extinguishers are provided as impractical to install standpipes with shown on the fire protection hose stations. drawings.

Adequate self-contained breathing Adequate self-contained breathing apparatus should be provided near apparatus will be provided for the containment entrances for fire emergency teams. This equipment fighting and damage control will be maintained in emergency personnel. These units should be kits in strategic locations independent of any breathing throughout the plant.

apparatus or air supply systems provided for general plant activities.

2. Control Room 2. Comply with intent:

The control room is essential to safe The control room complex (including reactor operation. It must be protected computers) is separated from other areas against disabling fire damage and should of the plant by floors and ceilings having a be separated from other areas of the fire resistance rating of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />. The APPENDIX E E4.1-42 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION plant by floors, walls, and roofs having supporting steel has a minimum fire resistance ratings of three 3-hour protective covering. The control hours. room is protected from a fire in the peri-pheral rooms by a 1.9-hour fire rated barrier (see Figures FP-14a and b).

Control room cabinets and consoles are Comply:

subject to damage from two distinct fire Ionization detection is provided in the hazards:

control room area and in cabinets and consoles. The control room is part of the PGCC designed by GE. The PGCC is provided with a Halon fire suppression system. The design of the PGCC is addressed in GE Licensing Topical Report NED0-10466-A.

a. Fire originating within a cabinet or console; and

b. Exposure fire involving combustibles in the general room area.

Hose stations adjacent to the control Comply:

room with portable extinguishers in the Hose stations and portable fire control room are acceptable.

extinguishers are adjacent to, and portable fire extinguishers are located in, the control room.

Nozzles that are compatible with the Comply.

hazards and equipment in the control room should be provided for the manual hose station. The nozzles chosen should satisfy actual fire-fighting needs, satisfy electrical safety, and minimize physical damage to electrical equipment from hose stream impingement.

Fire protection in the control room Comply:

cabinets and consoles should be The PGCC Halon fire suppression system provided by smoke and heat detectors in provides ionization fire detection in control each fire area. Alarm and annunciation room cabinets and consoles, and alarms should be provided in the control room.

and annunciators in the control room.

Fire alarms in other parts of the plant Fire alarms in other parts of the station should also be alarmed and annunciated are also alarmed and annunciated in the in the control room.

control room.

Breathing apparatus for control room Comply with intent:

operators should be readily available.

A manifold breathing air system is Control room floors, ceilings, supporting provided for control room operators.

structures, and walls, including penetra-tions and doors, should be designed to a Control room floors, ceilings, and minimum fire rating of three hours. All supporting structures, including pene-APPENDIX E E4.1-43 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION penetration seals should be airtight. trations and doors, are designed to a minimum fire rating of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />. The north and west walls are 3-hour rated. The south and east walls are 1.9-hour rated.

All fire rated penetration seals are airtight.

Manually operated ventilation systems Manually operated ventilation systems are acceptable. are provided.

Cables should not be located in Comply with intent:

concealed floor and ceiling spaces. All Generally, all cables that enter the control cables that enter the control room should room terminate there. Fire detection is terminate in the control room. That is, no provided above the non-combustible cabling should be simply routed through suspended ceiling in the control room.

the control room from one area to The PGCC Halon fire suppression system another. If such concealed spaces are provides fire detection and automatically used, however, they should have fixed initiated suppression for the PGCC floor automatic total flooding Halon protection.

sections.

3. Cable Spreading Room

a. The preferred acceptable methods are:

1. Automatic water system such 1. Comply:

as closed head sprinklers, open An automatic wet pipe system head deluge, or open directional is provided for the Division 1 spray nozzles. Deluge and and Division 2 cable spreading open spray systems should rooms. Locations of sprinkler have provisions for manual heads consider cable tray operation at a remote station; sizing, arrangement, and however, there should also be obstructions to ensure provisions to reclude adequate water coverage. All inadvertent operation. Location cables and their installation of sprinkler heads or spray are designed to be wetted nozzles should consider cable without electrical failure.

tray sizing and arrangements to assure adequate water coverage. Cables should be designed to allow wetting down with deluge water without electrical faulting. Open head deluge and open directional spray systems should be zoned so that a single failure will not deprive the entire area of auto-matic fire suppression capability. The use of foam is acceptable provided it is of a type capable of being delivered by a sprinkler or deluge system, such as an Aqueous Film APPENDIX E E4.1-44 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION Forming Foam (AFFF).

2. Manual hoses and portable 2. Comply:

extinguishers should be Hose stations are readily provided as backup.

accessible from both entrances to each cable spreading room. In addition, hose stations and portable fire extinguishers are provided inside each cable spreading room.

3. Each cable spreading room of 3. Comply with intent:

each unit should have divisional Each cable spreading room is cable separation, and be separated from the other by separated from the other and two 1.9-hour fire rated walls the rest of the plant by a that contain the auxiliary minimum three hour rated fire electric room, except for a wall (refer to NFPA 251 or small portion of a 1.9-hour fire ASTM E-119 for fire test rated wall where they abut resistance rating).

together. The auxiliary electrical equipment room is also protected by an automatic preaction sprinkler system.

The floor and ceiling of each cable spreading room is 3-hour fire rated. The north and west walls are 3-hour fire rated, and the south and east walls are 1.9-hour fire rated.

For details of the separation of cable spreading areas of the plant, refer to Section 3.0 and the SSA.

4. At least two remote and 4. Comply:

separate entrances are Each cable spreading room provided to the room for access has at least two remote and by fire brigade personnel.

separate entrances for access by the plant fire brigade.

5. Aisle separations provided 5. Comply:

between tray stacks should be Main aisle separations at least three feet wide and provided between tray stacks eight feet high.

are at least 3 feet wide and 8 feet high.

APPENDIX E E4.1-45 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

b. For cable spreading rooms that do b. Not applicable based on not provide divisional cable separa- Section F.3.a. and the Safe tion of a.3., in addition to meeting Shutdown Analysis.

a.1., 2., 4., and 5. above, the following should also be provided:

1. Divisional cable separation should meet the guidelines of Regulatory Guide 1.75, Physical Independence of Electric Systems.

2. All cabling should be covered with a suitable fire-retardant coating.

3. As an alternate to a.1. above, automatically initiated gas systems (Halon or CO2) may be used for primary fire suppres-sion, provided a fixed water system is used as a backup.

4. Plants that cannot meet the guidelines of Regulatory Guide 1.75, in addition to meet-ing a.1., 2., 4., and 5. above, an auxiliary shutdown system with all cabling independent of the cable spreading room should be provided.

4. Plant Computer Room 4. Not applicable:

Safety-related computers should be The computer is not safety-related, but is separated from other areas of the plant an integral part of the GE PGCC control by barriers having a minimum three hour room complex and cannot be separated fire resistant rating. Automatic fire from the control room. Automatic fire detection should be provided to alarm detection, as well as manual hose and annunciate in the control room and stations and portable fire extinguishers, alarm locally. Manual hose stations and are provided.

portable water and Halon fire extinguishers should be provided.

5. Switchgear Rooms 5. Comply (except as noted):

Switchgear rooms should be separated Division 1 and 2 switchgear areas are from the remainder of the plant by mini- separated from each other and other mum three hour rated fire barriers to the plant areas by 3-hour fire rated barriers.

extent practicable. Automatic fire detec- The Division 3 switchgear area is tion should alarm and annunciate in the enclosed by 1.9-hour fire-rated barriers.

control room and alarm locally. Fire The switchgear rooms do not have hose stations and portable extinguishers automatic suppression systems but do APPENDIX E E4.1-46 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION should be readily available. have automatic detection that alarms and annunciates in the control room. Hose Acceptable protection for cables that stations and portable fire extinguishers pass through the switchgear room is are readily accessible to the areas.

automatic water or gas agent suppres-Detectors do not alarm locally.

sion. Such automatic suppression must consider preventing unacceptable damage to electrical equipment and possible necessary containment of agent following discharge.

6. Remote Safety-Related Panels 6. Comply with intent:

The general area housing remote safety- Detection is provided throughout the zone related panels should be provided with containing the remote shutdown panel automatic fire detectors that alarm locally that alarms and annunciates in the control and alarm and annunciate in the control room. As required by the Safe Shutdown room. Combustible materials should be Analysis, other general areas have controlled and limited to those required detection that alarms in the main control for operation. Portable extinguishers room to protect any required safe and manual hose stations should be shutdown components. Detectors do not provided. alarm locally. Combustible materials are controlled and limited to those required for operation. Portable extinguishers and manual hose stations are provided.

7. Station Battery Rooms 7. Comply:

Battery rooms should be protected Battery rooms are protected against fire against fire explosions. Battery rooms and explosions. Safe shutdown battery should be separated from each other rooms are enclosed by 3-hour fire and other areas of the plant by barriers barriers. Other battery rooms have having a minimum fire rating of three 1.9-hour fire rated barrier enclosures.

hours inclusive of all penetrations and openings. (See NFPA 69, "Standard on Explosion Prevention Systems.")

Ventilation systems in the battery rooms Ventilation is designed to maintain should be capable of maintaining the hydrogen concentrations below 2% for hydrogen concentration well below 2 vol. the maximum postulated rate of hydrogen

% hydrogen concentration. Standpipe release.

and hose and portable extinguishers Fire hose stations and portable should be provided.

extinguishers are accessible to the Alternatives: battery rooms. Loss of ventilation is alarmed in the control room.

a. Provide a total fire rated barrier a. Comply.

enclosure of the battery room complex that exceeds the fire load contained in the room, APPENDIX E E4.1-47 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

b. Reduce the fire load to be within the b. Not applicable.

fire barrier capability of 1-1/2 hours, or

c. Provide a remote manual actuated c. Not applicable.

sprinkler system in each room and provide the 1-1/2 hour fire barrier separation.

8. Turbine Lubrication and Control Oil 8. Comply:

Storage and Use Areas The turbine oil area is separated from all A blank fire wall having a minimum safety-related equipment by walls having resistance rating of three hours should a 3-hour rating, except the main steam separate all areas containing safety- tunnel on elevation 755 feet of the turbine related systems and equipment from the building (see Subsection .2.2.2 of the turbine oil system. When a blank wall is Safe Shutdown Analysis). In general, not present, open head deluge protection tubine oil hazards are protected by wet-should be provided for the turbine oil pipe automatic sprinkler systems. There hazards, and automatic open head water are safety-related cables and instruments curtain protection should be provided for located in the turbine oil area; however, wall openings. they are not required for safe shutdown.

9. Diesel Generator Areas 9. Comply:

Diesel generators should be separated The three safety-related standby, from each other and other areas of the emergency diesel generators are plant by fire barriers having a minimum separated from each other and all other fire resistance rating of three hours. plant equipment by 3-hour rated Automatic fire suppression such as enclosures. An automatic total flooding AFFF foam, or sprinklers, should be CO2 system is provided for each diesel installed to combat any diesel generator generator room. The automatic fire or lubricating oil fires. Automatic fire detection provided alarms and detection should be provided to alarm annunciates in the control room and and annunciate in the control room and alarms locally. Drainage for fire-fighting alarm locally. Drainage for fire fighting water is provided.

water and means for local manual Means for local manual venting of smoke venting of smoke should be provided.

is provided as described in the CPS Smoke Removal Plan.

When day tanks cannot be separated The day tanks are separated from the from the diesel generator, one of the diesel generator by a 1.9-hour fire rated following should be provided for the enclosure. An automatic wet-pipe diesel generator area: sprinkler system is provided for the day tanks. Ionization fire detection will be provided for each day tank room that alarms and annunciates in the control room.

a. Automatic open head deluge or open head spray nozzle system(s),

b. Automatic closed head sprinklers, APPENDIX E E4.1-48 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

c. Automatic AFFF that is delivered by a sprinkler deluge or spray system, or

d. Automatic gas system (Halon or CO2) may be used in lieu of foam or sprinklers to combat diesel generator and/or lubricating oil fires.

10. Diesel Fuel Oil Storage Areas 10. Comply with intent:

Diesel fuel oil tanks with a capacity The diesel generator oil day tanks greater than 1,100 gallons should not be (600 gallons) are totally enclosed in located inside the buildings containing 1.9-hour rated structures, and are safety-related equipment. They should protected by an automatic wet-pipe be located at least 50 feet from any sprinkler system.

building containing safety-related The diesel generator oil storage tanks equipment, or if located within 50 feet, (nominally 35,000/50,000 gallons) are they should be housed in a separate located directly below the diesel building with construction having a generators and are not buried. They are minimum fire resistance rating of three totally enclosed in a 3-hour rated hours. Buried tanks are considered as structure. Fire suppression capability meeting the three hour fire resistance consists of automatic wet-pipe sprinkler requirements. See NFPA 30, with hose stations and portable fire "Flammable and Combustible Liquids extinguishers as backups. An ionization Code," for additional guidance.

fire detection system that alarms and annunciates in the control room will be provided for each oil storage room.

When located in a separate building, the Not applicable: Diesel tanks are located tank should be protected by an in the same building.

automatic fire suppression system such as AFFF or sprinklers.

In operating plants where tanks are Structural members are concrete encased located directly above or below the to provide a 3-hour fire rating.

diesel generators and cannot reasonably Doors are located 7 feet 6 inches above be moved, separating floors and main the finish floor to prevent oil from structural members should, as a spreading to other zones in the unlikely minimum, have a fire resistance rating of event of an oil spill. Drains are provided three hours. Floors should be liquid tight to remove possible oil spills and fire-to prevent leaking of possible oil spills fighting water to a local sump.

from one level to another. Drains should be provided to remove possible oil spills and fire-fighting water to a safe location.

One of the following acceptable methods of fire protection should also be provided:

APPENDIX E E4.1-49 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

a. Automatic open head deluge or a. Not applicable.

open head spray nozzle system(s);

b. Automatic closed head sprinklers; or b. Comply.

c. Automatic AFFF that is delivered by c. Not applicable.

a sprinkler system or spray

11. Safety-Related Pumps 11. Comply with intent:

Pump houses and rooms housing safety- Fire protection and detection are provided related pumps should be protected by in accordance with the FPER and SSA.

automatic sprinkler protection unless a The SSA demonstrates that the plant will fire hazards analysis can demonstrate maintain the ability to perform safe that a fire will not endanger other safety- shutdown functions. Fire hose stations related equipment required for safe plant and portable fire extinguishers are located shutdown. Early warning fire detection in the area should be installed with alarm and annunciation locally and in the control room. Local hose stations and portable extinguishers should also be provided.

12. New Fuel Area 12. Comply (except as noted below):

Hand portable extinguishers should be An ionization type smoke detection located within this area. Also, local hose system is provided which annunciates stations should be located outside but and alarms in the control room. Detectors within hose reach of this area. do not alarm locally. Fire hose stations Automatic fire detection should alarm and portable extinguishers are located and annunciate in the control room and within the area. Combustibles are limited alarm locally. Combustibles should be to a minimum in the new fuel area. The limited to a minimum in the new fuel storage area is provided with a drainage area. The storage area should be system to preclude accumulation of provided with a drainage system to water.

preclude accumulation of water.

The storage configuration of new fuel The storage configuration of new fuel will should always be so maintained as to always be maintained so as to preclude preclude criticality for any water density criticality.

that might occur during fire water application.

13. Spent Fuel Pool Area 13. Comply (except as noted below):

Protection for the spent fuel pool area An ionization type smoke detection should be provided by local fire hose system is provided which annunciates stations and portable extinguishers. and alarms in the control room. Detectors Automatic fire detection should be do not alarm locally. Fire hose stations provided to alarm and annunciate in the and portable fire extinguishers are located control room and to alarm locally. in the area.

14. Radwaste Building 14. Comply:

The radwaste building should be The radwaste building is separated separated from other areas of the plant from safety-related areas of the plant APPENDIX E E4.1-50 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION by fire barriers having at least three hour by 3-hour fire barriers.

ratings. Automatic sprinklers should be Automatic preaction sprinklers are used in all areas where combustible provided for the radwaste building materials are located.

paint/oil storage room and baler areas.

Automatic fire detection should be The sprinkler systems alarm and provided to annunciate and alarm in the annunciate in the control room and alarm control room and alarm locally. During a locally.

fire, the ventilation systems in these Automatic fire detection is provided in areas should be capable of being selected areas which annunciates and isolated. Water should drain to liquid alarms in the control room.

radwaste building sumps.

The ventilation systems are capable of being isolated. Adequate drainage has been provided to the liquid radwaste building sumps.

Acceptable alternative fire protection is Fire hose stations and portable fire automatic fire detection to alarm and extinguishers are located throughout the annunciate in the control room, in building with the exception of high-addition to manual hose stations and radiation areas. Extinguishers located portable extinguishers consisting of outside of these areas can be brought in handheld and large wheeled units. for manual fire fighting.

15. Decontamination Areas 15. Comply:

The decontamination areas should be Manual fire fighting equipment is protected by automatic sprinklers if provided, consisting of fire hose stations flammable liquids are stored. Automatic and portable fire extinguishers.

fire detection should be provided to Automatic suppression and detection is annunciate and alarm in the control room not provided in this area since flammable and alarm locally. The ventilation materials will not be stored there.

system should be capable of being isolated. Local hose stations and hand The ventilation systems are capable of portable extinguishers should be being isolated.

provided as backup to the sprinkler system.

APPENDIX E E4.1-51 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

16. Safety-Related Water Tanks 16. Not applicable:

Storage tanks that supply water for safe Storage tanks that supply water for safe shutdown should be protected from the shutdown are not employed in the Clinton effects of fire. Local hose stations and Power Station design.

portable extinguishers should be provided. Portable extinguishers should be located in nearby hose houses.

Combustible materials should not be stored next to outdoor tanks. A minimum of 50 feet of separation should be provided between outdoor tanks and combustible materials where feasible.

17. Cooling Towers 17. Not applicable:

Cooling towers should be of noncombus- Cooling towers are not employed in the tible construction or so located that a fire Clinton Power Station design.

will not adversely affect any safety-related systems or equipment. Cooling towers should be of noncombustible construction when the basins are used for the ultimate heat sink or for the fire protection water supply. Cooling towers of combustible construction, so located that a fire in them could adversely affect safety-related systems or equipment, should be protected with an open head deluge system installation with hydrants and hose houses strategically located.

18. Miscellaneous Areas 18. Comply:

Miscellaneous areas such as records The records storage area, machine shop, storage areas, shops, warehouses, and and storerooms are located in the auxiliary boiler rooms should be so radwaste and service buildings and are located that a fire or effects of a fire, remote from safety-related equipment.

including smoke, will not adversely affect The storeroom in the radwaste building any safety-related systems or has an overhead sprinkler system.

equipment. Fuel oil tanks for auxiliary The auxiliary boiler system employs an boilers should be buried or provided with electrode boiler and steam reboiler, and is dikes to contain the entire tank contents.

located in non-safety-related buildings.

No oil-fired equipment is present.

APPENDIX E E4.1-52 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION G. SPECIAL PROTECTION GUIDELINES

1. Welding and Cutting Acetylene-Oxygen 1. Comply:

Fuel Gas Systems Combustible gas tanks are stored in the This equipment is used in various areas radwaste building storeroom and are throughout the plant. Storage locations protected by an automatic preaction should be chosen to permit fire system. Use of combustible gases will be protection by automatic sprinkler controlled in accordance with approved systems. Local hose stations and procedures. Local hose stations portable equipment should be provided andportable extinguishers will be utilized as backup. The requirements of NFPA for additional fire protection as required.

51 and 51B are applicable to these hazards. A permit system should be required to utilize this equipment. (Also refer to 2f herein.

2. Storage Areas for Dry Ion Exchange 2. Partial compliance:

Resins New resins (greater than or equal to 70%

Dry ion exchange resins should not be moisture) will be stored in an area remote stored near essential safety-related from safety-related equipment or stored in systems. Dry unused resins should be a fire retardant container. Local hose protected by automatic wet pipe sprinkler stations and portable extinguishers installations. Detection by smoke and provide the primary means of protection.

heat detectors should alarm and annunciate in the control room and alarm locally. Local hose stations and portable extinguishers should provide backup for these areas. Storage areas of dry resin should have curbs and drains. (Refer to NFPA 92M, "Waterproofing and Draining of Floors."

3. Hazardous Chemicals 3. Comply:

Hazardous chemicals should be stored Permanent storage of hazardous and protected in accordance with the chemicals is in accordance with NFPA 49.

recommendations of NFPA 49, Chemical storage areas are well "Hazardous Chemicals Data." ventilated and protected against flooding Chemicals storage areas should be well conditions. NFPA code conformance is ventilated and protected against flooding documented in the CPS NFPA Code conditions since some chemicals may Conformance Evaluation.

react with water to produce ignition.

APPENDIX E E4.1-53 REV. 19, OCTOBER 2017

BTP APCSB 9.5-1, APPENDIX A, PLANTS UNDER CONSTRUCTION AND OPERATING PLANTS APPLICANT'S POSITION

4. Materials Containing Radioactivity 4. Comply:

Materials that collect and contain Materials that could collect radioactivity radioactivity such as spent ion exchange will be stored in closed metal containers resins, charcoal filters, and HEPA filters and will be protected from other fire should be stored in closed metal tanks or areas. Consideration has been given to containers that are located in areas free decay heat which wouldcome from any entrained radioactive materials from ignition sources or combustibles.

These materials should be protected from exposure to fires in adjacent areas as well. Consideration should be given to requirements for removal of isotopic decay heat from entrained radioactive materials.

APPENDIX E E4.1-54 REV. 19, OCTOBER 2017