| Publisher | NFPA |
|---|---|
| Type | Code |
| Scope | Application, installation, location, performance, inspection, testing and maintenance of fire alarm systems, supervising station alarm systems, emergency communications systems and their components. |
| Who uses it | Fire alarm designers and engineers, installers and technicians, fire protection engineers, inspectors and fire marshals, building owners and facility managers. |
| Edition note | NFPA revises NFPA 72 on a three-year cycle, and the enforceable edition depends on local adoption. Refer to NFPA and the authority having jurisdiction. |
What It Is
NFPA 72 is the National Fire Alarm and Signaling Code published by the National Fire Protection Association. It defines how fire alarm and signaling systems are designed, installed, tested and maintained so that fires are detected early, occupants are warned and emergency responders are notified. Its scope also includes emergency communications systems, such as in-building voice evacuation and mass notification, and, following a consolidation of NFPA 720, carbon monoxide detection.
The code addresses every element of a system: initiating devices such as smoke and heat detectors, manual pull stations and waterflow switches; fire alarm control units; notification appliances, both audible and visible; circuits and pathways; power supplies; and off-site monitoring by supervising stations. It contains extensive requirements for documentation and for inspection, testing and maintenance over the life of the system.
Why It Matters
Fire alarm systems save lives only when they work as intended. NFPA 72 becomes enforceable when it is adopted by a state or local jurisdiction or referenced by an adopted building or fire code, and it is enforced by fire marshals and other authorities having jurisdiction. Other codes, such as NFPA 101, determine when a fire alarm system is required; NFPA 72 then determines how it must be built and maintained.
For electrical and instrumentation professionals, the code is especially important because fire alarm wiring, power and monitoring interact with building electrical systems, and because poorly maintained systems produce both missed fires and nuisance alarms that erode occupant trust.
Key Concepts
- Initiating devices — devices that detect a fire condition or supervisory event, such as detectors, manual stations and sprinkler waterflow switches.
- Notification appliances — horns, speakers and strobes that alert occupants, designed for audibility and visibility in the protected space.
- Signal types — the distinction between alarm, supervisory and trouble signals, each requiring different responses.
- Supervising station — a facility that monitors alarm systems off-site and notifies responders, including central, proprietary and remote station types.
- Emergency communications systems — voice evacuation and mass notification systems used to deliver specific instructions to occupants.
- Pathway survivability and supervision — requirements that circuits be monitored for integrity and, in some systems, protected to remain operational during a fire.
- Inspection, testing and maintenance — scheduled activities and records that confirm system performance throughout its life.
Who Should Know It
- Fire alarm designers and fire protection engineers
- Fire alarm installers and service technicians
- Electrical contractors working on life safety systems
- Fire inspectors and authorities having jurisdiction
- Facility managers responsible for testing records
Related Standards
- NFPA 101 — determines when fire alarm systems are required in occupancies; NFPA 72 governs how they are installed and maintained.
- NFPA 70 (NEC) — Article 760 of the NEC governs fire alarm system wiring.
- NFPA 13 — the sprinkler installation standard; sprinkler waterflow and supervisory devices are monitored by NFPA 72 systems.
- IEC 61511 — relevant where fire and gas detection systems in process plants are designed as safety instrumented functions.
How ASEEE Uses It
ASEEE fire and gas detection and life safety programs map learning outcomes and assessments to NFPA 72 concepts, including system components, signal types, supervision and inspection, testing and maintenance. See related ASEEE programs.
ASEEE Programs Referencing This Standard
- Fire & Gas Detection and Alarm Systems (FGDS)
- Intelligent Gas Sensors for MSA & Detcon Systems
- NFPA Fire Protection Specialist
Educational summary only. ASEEE is not the publisher of this document and this page does not reproduce or replace it. Always consult the current official edition from NFPA for requirements.