NFPA 72, National Fire Alarm and Signaling Code
NFPA · National Fire Protection Association
The US code for fire detection, alarm signalling and emergency communications; in data centres it governs detection and alarm design that interfaces with suppression release and HVAC shutdown.
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Overview
NFPA 72 is the United States code for fire detection, alarm signalling and emergency communications. Its core focus is fire alarm systems. In data centres it governs the design of detection and alarm systems that interface with suppression release and HVAC shutdown. Detector placement, zone definition and control logic therefore fall within its scope.
Beyond fire, the code includes requirements for mass notification systems for weather, terrorist, biological, chemical and nuclear emergencies, among others. This breadth shows that in-building alarm is treated within a wider framework of emergency communications, not only as a fire matter.
The current edition is 2025, and the next edition is due in 2028, falling in the Annual 2027 revision cycle.
The limit of the document is that it is a code for the US jurisdiction; in Turkey, practice rests on local regulations and European standards such as the EN 54 series. In data centre design it should be read together with NFPA 75, which covers protection of IT equipment, and NFPA 2001, which covers clean agent suppression. If the selected profile is the US, this code is the basis.
Key points
- Title: National Fire Alarm and Signaling Code.
- Current edition is 2025; the next edition is 2028.
- Core focus is fire alarm systems, covering fire detection, signalling and emergency communications.
- Includes requirements for mass notification systems for weather, terrorist, biological/chemical/nuclear and other emergencies.
- The next edition is in the Annual 2027 revision cycle.
- Related documents: NFPA 75, NFPA 2001 and the EN 54 series.
Using it in design
- In the fire module (US profile), place detectors per room type.
- Link detection zones to suppression release and HVAC/damper control logic.
- Keep the cause-and-effect matrix as an exportable artefact.
- For the Turkish profile, run a separate equivalent check against local regulations and the EN 54 series.
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Who should read it
Engineers who design and integrate data centre fire detection and alarm systems.
Related standards
- NFPA 75
- NFPA 2001
- EN 54 series
Publication details
- Authors
- National Fire Protection Association
- Publisher
- NFPA
- Year
- 2025
- Document number
- NFPA 72
- Document language
- English
- Source type
- Standard
- Access
- Citation only
- Licence
- Copyright retained; citation only — the publisher’s terms apply to the original document
Original licence note
NFPA codes are copyrighted; free read-only access requires an NFPA account, purchase otherwise. Record uses only the public NFPA development page.
Citation
National Fire Protection Association (2025). NFPA 72, National Fire Alarm and Signaling Code. NFPA. NFPA 72. https://www.nfpa.org/codes-and-standards/nfpa-72-standard-development/72
Events on this subject
- iMasons Climate Accord Summit
- ICCI 2027 – Uluslararası Enerji ve Çevre Fuarı ve Konferansı
- The smarter E Europe (Intersolar Europe, ees Europe, Power2Drive, EM-Power)
All content and rights belong to the respective authors and publishers. SoSo CAD provides only the citation, its own summary and a link to the source, and is not responsible for the sources' content.
Related sources
All sources on this topic
National Institute of Standards and Technology 2020
NIST SP 800-53 Rev. 5: Security and Privacy Controls for Information Systems and Organizations
In data-centre power design, set PE-9 requirements for physically separated redundant cabling paths and automatic voltage control on critical components, and define the separation distance as an organisational parameter.
- Baselines and tailoring guidance moved to SP 800-53B.
Fire (MDPI AG) 2026
Probabilistic Risk Assessment of Grid-Scale Lithium-Ion Battery Energy Storage System Fire Hazards: Hydrogen Fluoride (HF) Toxicity, Suppression Effectiveness, and Comparative Compartment Design Analysis
Compare BESS compartmentation quantitatively: two compartments halve HF dose and IDLH clearance time, but IDLH is still exceeded for anyone in the room in full thermal runaway, so runaway prevention (BMS integrity, UL 9540A containment, emergency power off) must stay the primary control.
- Mean IDLH (25 mg/m³) clearance time with 9 ACH was 599 min for one compartment and 301 min for two; the probability of clearing within 5 min was 0% for both.
National Institute of Standards and Technology 2024
The NIST Cybersecurity Framework (CSF) 2.0
Create separate Organizational Profiles for a facility's IT, OT and building management systems (for example electrical and cooling SCADA/BMS) and state each Profile's scope.
- The Core has 22 Categories with Subcategories; the outcomes are not a checklist.
U.S. DoD (UFC) 2021
UFC 3-600-01, Fire Protection Engineering for Facilities (8 August 2016, Change 6, 6 May 2021)
Build the data hall protection concept in this order: very early warning smoke detection, wet-pipe sprinklers throughout, clean agent only as an addition, and state in the specification that clean agent cannot replace the sprinklers.
- Stand-alone telecommunication facilities over 2,500 ft2 (232 m2) need clean agent or sprinklers; over 7,500 ft2 (696 m2) sprinklers are required and clean agent may only be added.
Journal of Physics: Conference Series (IOP Publishing) 2018
Evaluation of Oxygen Reduction System (ORS) in Large-scale Fire Tests
Compare ORS design concentration with the 15-16% standard-test values in VdS 3527 and EN 16750; since large-scale hard-limit LOCs (11.1% for cartoned commodities, 13.0% for uncartoned plastics) are lower, justify the design safety margin against them.
- Earlier lab work found LOCs of 10-13% for cardboard, wood, PS and PE, below the 15-16% range from standard tests in VdS 3527 and EN 16750:2017.
Scientific Reports (Springer Science and Business Media LLC) 2017
Toxic fluoride gas emissions from lithium-ion battery fires
Add HF toxicity to risk assessments for enclosed battery rooms and BESS: take 20-200 mg/Wh of stored energy and compare the resulting room concentration with the IDLH (0.025 g/m³) and 10-minute AEGL-3 values.
- POF3 was measured at 15-22 mg/Wh, but only for one cell type (type A) at 0% SOC.