NFPA 750:2023

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Application. 1.4 Retroactivity. 1.5 Equivalency. 1.6 Units. 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 General 4.1 General. 4.2 Safety. Chapter 5 Classification of Occupancies 5.1 Classification of Occupancies for Water Mist Systems. 5.2 Classification of Specific Applications for Water Mist Systems. Chapter 6 System Components and Hardware 6.1 General. 6.2 Gas and Water Containers. 6.3 Piping and Tube. 6.4 Fittings. 6.5 Hangers/Supports. 6.6 Nozzles. 6.7 Valves. 6.8 Strainers and Filters. 6.9 Pump Systems. 6.10 Detection, Actuation, Alarm, and Control Systems. 6.11 Compatibility. Chapter 7 System Requirements 7.1 General. 7.2 System Applications. 7.3 Nozzle Types. 7.4 System Requirements. 7.5 Media System Types. 7.6 Additive Systems. Chapter 8 Installation Requirements 8.1 General. 8.2 Nozzles. 8.3 Pipe and Tubing. 8.4 Fittings. 8.5 Gas and Water Storage Containers. 8.6 Pumps and Pump Controllers. 8.7 Strainers and Filters. 8.8 Valves and Pressure Gauges. 8.9 Electrical Systems. 8.10 Test Connections.Chapter 10 Occupancy Protection Systems 10.1 General. 10.2 Light and Ordinary Hazard Occupancy Hazard Fire Control Approach. 10.3 Occupancy Protection Systems for Residential Applications. Chapter 11 Calculations 11.1 General. 11.2 Darcy–Weisbach Calculation Method for Intermediate and High Pressure, Single Fluid, Single Liquid Phase Systems. 11.3 Hazen–Williams Calculation Method (Low-Pressure Systems). 11.4 Calculation Procedures for Propellant Gas or Atomizing Media. Chapter 12 Water Supplies and Atomizing Media 12.1 General. 12.2 Quantity. 12.3 Duration. 12.4 Reserve Supplies. 12.5 Water Supplies. 12.6 Atomizing Media for Twin-Fluid Systems. 12.7 Pressure Gauges. Chapter 13 Plans and Documentation 13.1 Working Plans. 13.2 Hydraulic Calculation Documentation. 13.3 Pneumatic Calculation Documentation. 13.4 Detection, Actuation, and Control Systems Documentation.Chapter 14 System Acceptance 14.1 Approval of Water Mist Systems. 14.2 Acceptance Requirements. Chapter 15 System Inspection, Testing, and Maintenance 15.1 General. Chapter 16 Marine Systems 16.1 General. 16.2 Sprinkler Equivalent Systems. 16.3 Flammable Liquids — Total Area Protection. 16.4 Human Factors. 16.5 Requirements for Water Mist Systems on Combatant Vessels. Annex A Explanatory Material Annex B Research Summary Annex C Examples of Fire Test Protocols Annex D Reliability Annex E Informational References

This standard contains the minimum requirements for the design, installation, maintenance, and testing of water mist fire protection systems.