ISO 13943-2023 PDF

Full title and description

St ISO 13943-2023 — Fire safety — Vocabulary. This International Standard provides the agreed terminology and definitions used across ISO and IEC fire‑safety related standards to ensure clarity and consistency in documentation, design, testing and regulation of fire safety activities.

Abstract

This document defines terminology relating to fire safety as used in ISO and IEC International Standards. It collects and harmonizes definitions for key concepts (for example: ignition, combustion, flame spread, smoke, detection, suppression, fire resistance and evacuation) so that terms used in technical standards, test methods and regulations are consistent and unambiguous.

General information

• Status: Published (International Standard; confirmed current following review).
• Publication date: September 15, 2023 (ISO publication: 2023‑09).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 01.040.13 (Environment. Health protection. Safety — Vocabularies); 13.220.01 (Protection against fire in general).
• Edition / version: Edition 4 (ISO 13943:2023).
• Number of pages: 66 pages (official ISO published edition).

Scope

ISO 13943:2023 defines terminology relating to fire safety as used in ISO and IEC International Standards. Its scope covers the selection, definition and clarification of terms applied across fire‑safety subjects (including fire behaviour, fire protection measures, detection and alarm systems, suppression, testing and fire safety management) so that other standards and technical documents can reference common definitions.

Key topics and requirements

• Standardized definitions for fundamental fire‑safety concepts (ignition, combustion, heat release, flame, smoke, toxic products of combustion).
• Terms related to fire behaviour and fire dynamics (spread, behaviour of materials and assemblies, fire resistance concepts).
• Vocabulary for fire detection, alarm and suppression systems (detection types, alarm states, suppression agent types).
• Definitions for fire‑safety management, prevention, emergency planning and evacuation terminology.
• Harmonization and cross‑referencing guidance so that ISO/IEC technical standards use consistent terms and avoid ambiguity.

Typical use and users

Used by standards developers, fire safety engineers and consultants, test laboratories, manufacturers of fire‑safety and detection equipment, building code writers, regulators, insurers, emergency services and researchers who need consistent, internationally accepted definitions in specifications, test reports, standards and regulations. The vocabulary is intended as a reference whenever precise, common terminology is required across fire‑safety documents.

Related standards

ISO 13943 is maintained by ISO/TC 92 (Fire safety) and complements many ISO/IEC standards in the fire domain — for example the ISO 7240 series (fire detection and alarm systems), ISO 834 (fire‑resistance tests), ISO/TR 17755 (national fire statistics practices) and other ISO/TC 92 publications; it also replaces and updates earlier editions of ISO 13943 (2017 and earlier). Users should consult specific product or test standards for technical requirements while using ISO 13943 for terminology consistency.

Keywords

fire safety; vocabulary; terminology; fire protection; fire detection; fire resistance; combustion; ignition; smoke; evacuation; ISO/TC 92.

FAQ

Q: What is this standard?

A: ISO 13943:2023 is the fourth edition of the ISO International Standard titled "Fire safety — Vocabulary" that provides standardized definitions for terms used across ISO and IEC fire‑safety standards.

Q: What does it cover?

A: It covers the agreed terminology for fire‑safety topics — including fire behaviour, detection, suppression, fire resistance, prevention, emergency planning and related management terms — to ensure consistent use of terms in standards and technical documents.

Q: Who typically uses it?

A: Standards developers, fire safety engineers, test laboratories, manufacturers, code writers, regulators, insurers, emergency responders and researchers who need consistent, internationally agreed definitions.

Q: Is it current or superseded?

A: ISO 13943:2023 was published in September 2023 (Edition 4) and, per ISO records, was reviewed and confirmed as current in 2025 — therefore it is the current edition as of February 27, 2026. Users should check for any amendments or national adoptions if they require the absolute latest status for regulatory compliance.

Q: Is it part of a series?

A: ISO 13943 is a standalone vocabulary standard maintained within the body of ISO/TC 92 publications; it is not a multi‑part series itself but is intended to be used alongside many ISO fire‑safety series (for example ISO 7240, ISO 834 and other ISO/TC 92 documents).

Q: What are the key keywords?

A: Fire safety, vocabulary, terminology, fire protection, detection, suppression, fire resistance, combustion, smoke, evacuation.