Chapter 9 — FIRE PROTECTION AND LIFE SAFETY SYSTEMS
902 Definitions — 2025 California Fire Code
California Fire Code (Title 24, Part 9) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Fire Code (Title 24, Part 9) § 902 · Effective January 1, 2026 · Official source: Building Standards Commission
902.1 Definitions.¶
The following terms are defined in Chapter 2:
ALARM NOTIFICATION APPLIANCE.
ALARM SIGNAL.
ALARM VERIFICATION FEATURE.
ANNUNCIATOR.
AUDIBLE ALARM NOTIFICATION APPLIANCE.
AUTOMATIC.
AUTOMATIC FIRE-EXTINGUISHING SYSTEM.
AUTOMATIC SMOKE DETECTION SYSTEM.
AUTOMATIC SPRINKLER SYSTEM.
AUTOMATIC WATER MIST SYSTEM.
AVERAGE AMBIENT SOUND LEVEL.
CARBON DIOXIDE EXTINGUISHING SYSTEM.
CLEAN AGENT.
FIRE PROTECTION AND LIFE SAFETY SYSTEMS
COMMERCIAL MOTOR VEHICLE.
CONSTANTLY ATTENDED LOCATION.
DELUGE SYSTEM.
DETECTOR, HEAT.
DRY-CHEMICAL EXTINGUISHING AGENT.
ELEVATOR GROUP.
EMERGENCY ALARM SYSTEM.
EMERGENCY VOICE/ALARM COMMUNICATIONS.
[California Code of Regulations, Title 19, Division 1, §902.4(b)] “E” Definitions
(b) Engineered Fixed Extinguishing System. A system which is custom designed for a particular hazard, using components which are approved or listed only for their broad performance characteristics. Components may be arranged into a variety of configurations. These systems shall include but not be limited to:
(1) Dry chemical systems
(2) Carbon dioxide systems
(3) Halogenated agent systems
(4) Steam systems
(5) High expansion foam systems
(6) Foam extinguishing systems
(7) Liquid agent systems (8) Clean agent systems
FIRE ALARM BOX, MANUAL.
FIRE ALARM CONTROL UNIT.
FIRE ALARM SIGNAL.
FIRE ALARM SYSTEM.
FIRE APPLIANCE [SFM] is apparatus or equipment provided or installed for use in the event of an emergency.
FIRE AREA.
FIRE DETECTOR, AUTOMATIC.
FIRE PROTECTION SYSTEM.
FIRE SAFETY FUNCTIONS.
FIXED BASE OPERATOR (FBO).
FOAM-EXTINGUISHING SYSTEM.
GAS DETECTION SYSTEM.
HALOGENATED EXTINGUISHING SYSTEM.
IMPAIRMENT COORDINATOR.
INITIATING DEVICE.
[California Code of Regulations, Title 19, Division 1, §902.9(a)] “I” Definitions.
(a) Inspection. A visual examination of a system or portion thereof to verify that it appears to be in operating condition and is free of physical damage.
LIFE SAFETY SYSTEMS.
MANUAL FIRE ALARM BOX.
MULTIPLE-STATION ALARM DEVICE.
MULTIPLE-STATION SMOKE ALARM.
[California Code of Regulations, Title 19, Division 1, §902.12(a)] “M” Definitions.
(a) Maintenance. Work performed to keep equipment operable or to make repairs.
NOTIFICATION ZONE.
NUISANCE ALARM.
[California Code of Regulations, Title 19, Division 1, §902.15(a)] “P” Definitions.
(a) Pre-engineered Fixed Extinguishing System. A system where the number of components and their configurations are included in the description of the systems approval and listing. These systems shall include but not be limited to:
(1) Dry chemical systems
(2) Carbon dioxide systems
9-12 2025 CALIFORNIA FIRE CODE
FIRE PROTECTION AND LIFE SAFETY SYSTEMS
(3) Halogenated agent systems
(4) Liquid agent systems
(5) Clean agent systems
PRIVATE GARAGE.
RECORD DRAWINGS.
SINGLE-STATION SMOKE ALARM.
SLEEPING UNIT.
SMOKE ALARM.
SMOKE DETECTOR.
STANDPIPE, TYPES OF.
Automatic dry.
Automatic wet.
Manual dry.
Manual wet.
Semiautomatic dry.
STANDPIPE SYSTEM, CLASSES OF.
Class I system.
Class II system.
Class III system.
SUPERVISING STATION.
SUPERVISORY SERVICE.
SUPERVISORY SIGNAL.
SUPERVISORY SIGNAL-INITIATING DEVICE.
[California Code of Regulations, Title 19, Division 1, §902.18(a)] “S” Definitions.
(a) Service. The performance of testing and maintenance on an automatic fire extinguishing system.
TIRES, BULK STORAGE OF.
TRANSIENT AIRCRAFT.
TROUBLE SIGNAL.
VISIBLE ALARM NOTIFICATION APPLIANCE.
WET-CHEMICAL EXTINGUISHING AGENT.
WIRELESS PROTECTION SYSTEM.
ZONE.
ZONE, NOTIFICATION.
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