ISO 21805:2023Published

Guidance and recommendations on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systems

Lignes directrices et recommandations relatives à la conception, à la sélection et à l'installation d'évents pour préserver l'intégrité structurelle des enceintes protégées par des systèmes d'extinction d'incendie à gaz

Abstract / scope

This document gives guidelines for fulfilling the requirements contained in ISO 6183:2022, 5.2.1 g) and 6.4.1, and ISO 14520-1:2023, 5.3 h) and 7.4, in respect to over- and under-pressurization venting and post-discharge extract.

It considers the design, selection and installation of vents to safeguard the structural integrity of enclosures protected by fixed gaseous extinguishing systems and the post-discharge venting provisions where used.

Life cycle

Amendments & corrigenda

ISO 21805:2023/Amd 1:2025PublishedGuidance and recommendations on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systems — Amendment 1International Standard · Published 22 Dec 2025 · ISO/TC 21/SC 8

Replaces

ISO/TS 21805:2018WithdrawnGuidance on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systemsTechnical Specification · Published 18 Dec 2018 · ISO/TC 21/SC 8