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NFPA 770: Standard on Hybrid (Water and Inert Gas) Fire Extinguishing Systems, 2021
- Important Notices and Disclaimers
- Additional Important Notices and Disclaimers
- Chapter 1 Administration [Go to Page]
- 1.1 Scope.
- 1.2 Purpose.
- 1.3 Retroactivity.
- 1.4 Equivalency.
- 1.5 Units of Measurement.
- Chapter 2 Referenced Publications [Go to Page]
- 2.1 General.
- 2.2 NFPA Publications.
- 2.3 Other Publications.
- 2.4 References for Extracts in Mandatory Sections.
- Chapter 3 Definitions [Go to Page]
- 3.1 General.
- 3.2 NFPA Official Definitions.
- 3.3 General Definitions
- Chapter 4 General Information [Go to Page]
- 4.1 Use and Limitations.
- 4.2 Safety Considerations.
- 4.3 Use Restrictions
- 4.4 Qualifications.
- Chapter 5 Components [Go to Page]
- 5.1 Water Supply.
- 5.2 Inert Gas Agent Supply.
- 5.3 Storage Containers.
- 5.4 Pipe, Fittings, and Valves.
- 5.5 Hybrid Nozzles.
- 5.6 Detection, Actuation, Alarm, and Control Systems.
- Chapter 6 Application and Fire Test Protocols [Go to Page]
- 6.1 General.
- 6.2 Listing or Approval Evaluations.
- 6.3 Performance Objectives.
- 6.4 Application Parameters.
- 6.5 Flooding Factor.
- Chapter 7 System Design Requirements [Go to Page]
- 7.1 General.
- 7.2 Pipe Network Layout and Design.
- Chapter 8 Design Requirements for Total Flooding Systems [Go to Page]
- 8.1 General.
- 8.2 Enclosure Requirements.
- 8.3 System Performance Characteristics.
- 8.4 Hybrid Media Quantity.
- 8.5 Concentration of Oxygen.
- 8.6 Hybrid Media Retention for Prevention of Re-ignition.
- 8.7 Hybrid Nozzle Selection, Quantity, and Location.
- Chapter 9 Design Requirements for Local Application Systems [Go to Page]
- 9.1 General.
- 9.2 Hazard Specifications.
- 9.3 Nozzle Selection, Quantity, and Location.
- 9.4 Discharge Rate.
- 9.5 Discharge Time.
- 9.6 Hybrid Media Quantity.
- Chapter 10 Design Requirements for Marine Systems (Reserved)
- Chapter 11 System Documentation [Go to Page]
- 11.1 System Working Plans.
- 11.2 System Flow Documentation.
- 11.3 Detection, Actuation, and Control Systems Documentation.
- 11.4 Owner’s Documentation.
- 11.5 System Information Sign.
- Chapter 12 Installation Requirements [Go to Page]
- 12.1 General.
- 12.2 Nozzles.
- 12.3 Hazardous Locations.
- 12.4 Electrical Clearances.
- 12.5 Pipe Network.
- 12.6 Gas and Water Storage Containers.
- 12.7 Valves and Pressure Gauges.
- 12.8 Electrical Equipment and Systems.
- 12.9 System Review and Testing.
- Chapter 13 Acceptance Testing [Go to Page]
- 13.1 Approval of Installations.
- 13.2 Acceptance Requirements.
- 13.3 System Design Information Sign.
- 13.4 Owner’s Documentation.
- Chapter 14 Inspection, Testing, and Maintenance [Go to Page]
- 14.1 General.
- 14.2 Periodic Inspection and Maintenance.
- 14.3 Hose Test.
- 14.4 Inert Gas Agent Container Test.
- 14.5 Water Storage Container Inspection and Test.
- 14.6 Actuation/Impairment.
- 14.7 Training.
- 14.8 Corrections and Repairs.
- Chapter 15 Impairment [Go to Page]
- 15.1 General.
- 15.2 Impairment Coordinator.
- 15.3 Tag Impairment System.
- 15.4 Impaired Equipment.
- 15.5 Preplanned Impairment Programs.
- 15.6 Emergency Impairments.
- 15.7 Restoring Systems to Service.
- Annex A Explanatory Material
- Annex B Fire Test Methods
- Annex C Informational References [Go to Page]
