ISO 5923-2012 PDF

Full title and description

St ISO 5923-2012 — Equipment for fire protection and fire fighting — Fire extinguishing media — Carbon dioxide. This International Standard specifies requirements for carbon dioxide when intended for use as a fire‑extinguishing medium, including purity and quality criteria and related guidance for safe handling and use.

Abstract

ISO 5923:2012 defines compositional and quality requirements for carbon dioxide used as a fire extinguishing agent, together with test and sampling considerations and guidance intended to ensure the medium performs safely and effectively in fire‑fighting applications. The standard was published as the third edition in 2012.

General information

• Status: Withdrawn (the ISO catalogue records the standard as withdrawn).
• Publication date: August 2012 (third edition).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.220.10 (Fire‑fighting).
• Edition / version: Edition 3 (2012).
• Number of pages: 15 (ISO bibliographic listing).

Scope

ISO 5923:2012 applies to carbon dioxide supplied for use as a fire‑extinguishing medium. Its scope covers the specification of the required quality and limits for contaminants and impurities, sampling and test methods needed to verify conformity, and safety/use guidance related to the medium in firefighting applications. The standard addresses CO2 as the extinguishing agent itself rather than the design or installation of CO2 extinguishing systems.

Key topics and requirements

• Specification of purity and allowable limits for impurities (water, oil, sulfur compounds and similar contaminants).
• Requirements for sampling and laboratory test methods to verify CO2 quality.
• Packaging, marking and handling guidance to prevent contamination and ensure safe use.
• Annexed information and recommendations on safety precautions and proper application in firefighting contexts (historically present in related editions).

Typical use and users

Intended users include gas producers and suppliers of technical carbon dioxide, fire‑protection product manufacturers, testing laboratories, quality assurance personnel, procurement specialists for fire‑safety equipment, and regulatory or certification bodies that evaluate extinguishing media for fixed or portable systems. Fire safety engineers and facility managers use the standard to confirm the suitability of CO2 supplies for firefighting applications.

Related standards

ISO 5923 has been part of a body of standards on CO2 and CO2 extinguishing systems. Related and consequential documents include national/adopted EN versions (EN ISO 5923) and the ISO 6183 series (design, installation and testing of carbon dioxide extinguishing systems), most recently progressed in the ISO/TC 21/SC 8 work programme. For current design and installation guidance for CO2 systems, consult the ISO 6183 series (latest edition updates) and the ISO catalogue for active replacements or related deliverables.

Keywords

carbon dioxide; CO2; fire extinguishing media; fire protection; purity; sampling; test methods; ISO/TC 21/SC 8; EN ISO 5923.

FAQ

Q: What is this standard?

A: ISO 5923:2012 is an International Standard that specified requirements for carbon dioxide used as a fire‑extinguishing medium (title: Equipment for fire protection and fire fighting — Fire extinguishing media — Carbon dioxide). It was published as the third edition in August 2012.

Q: What does it cover?

A: The standard covered quality and purity requirements for CO2 intended for extinguishing use, sampling and test method requirements to verify those quality criteria, and guidance related to safe handling and application in fire‑fighting contexts. It focused on the medium itself rather than system design.

Q: Who typically uses it?

A: Gas suppliers, fire‑protection equipment manufacturers, testing laboratories, fire safety engineers, procurement and QA teams, and conformity assessment bodies use standards like ISO 5923 when specifying, testing or accepting CO2 for extinguishing applications.

Q: Is it current or superseded?

A: ISO 5923:2012 is recorded in the ISO catalogue as withdrawn. Users should not rely on it as the current normative reference without checking the ISO catalogue for any active replacement or related standards; design and installation guidance for CO2 systems is provided in the ISO 6183 series, which has seen later revisions. A withdrawn bibliographic entry and withdrawal information are recorded in standards distributors' catalogues.

Q: Is it part of a series?

A: ISO 5923 relates to a family of fire‑protection standards under ISO/TC 21/SC 8. It sits alongside documents addressing CO2 extinguishing systems (ISO 6183 and its amendments/editions) and national/adopted EN versions (EN ISO 5923). For comprehensive compliance and system design, consult the relevant system‑level standards in the ISO 6183 series and the ISO catalogue for the most recent editions.

Q: What are the key keywords?

A: Carbon dioxide, CO2, fire extinguishing medium, purity, contaminants, sampling, test methods, fire protection, ISO 5923, ISO/TC 21/SC 8.