NFPA 520 : 2021

Chapter 1 Administration 1.1 Scope. 1.2 Purpose.1.3 Application.1.4 Retroactivity.1.5 Equivalency. Chapter 2 Referenced Publications 2.1 General.2.2 NFPA Publications. 2.3 Other Publications.2.4 References for Extracts in Mandatory Sections.Chapter 3 Definitions 3.1 General.3.2 NFPA Official Definitions.3.3 General Definitions. Chapter 4 Fire Protection Approaches4.1 Fire Protection Approach.4.2 Fire Risk Assessment. Chapter 5 Performance-Based Design Approach 5.1 Performance-Based Design Approach. 5.2 Goals and Objectives. 5.3 Qualifications.5.4 Independent Review.5.5 Final Determination. 5.6 Maintenance of Design Feature. 5.7 Performance Criteria.Chapter 6 Construction Features 6.1 Noncombustible Material. 6.2 Occupancy in Subterranean Spaces.6.3 Compartmentation Requirements.6.4 Interior Finish. 6.5 Electrical Installations. 6.6 Control of Smoke Spread. Chapter 7 Means of Egress 7.1 Means of Egress Within the Building.7.2 Means of Egress from the Common Space.7.3 Occupant Load Determination.7.4 Egress Capacity.7.5 Exit Doors.7.6 Illumination in Common Spaces. 7.7 Marking.7.8 Refuge Areas and/or Refuge Chambers.7.9 Exit Passageway.Chapter 8 Fire Alarm, Detection, and Suppression Systems 8.1 Fire Alarm Systems.8.2 Sprinkler Systems.8.3 Standpipe Systems. 8.4 Water Supply.8.5 Maintenance. 8.6 Emergency Power.8.7 Standby Power.8.8 Alternative Power Supplies.Chapter 9 Emergency Preparedness9.1 Emergency Action Plan.9.2 Breathing Apparatus. 9.3 Fire Exit Drills.9.4 Fire Extinguishers.Chapter 10 Emergency Response Provisions10.1 Communications.10.2 Pre-Fire Planning.10.3 Emergency Response Access.Annex A Explanatory Material Annex B Diagrams of Subterranean Spaces Annex C Informational References