ISO 21805:2023/Amd 1

Guidance and recommendations on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systems — Amendment 1

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 — Amendement 1

General Information

• Status: Not Published
• ICS: 13.220.10 - Fire-fighting
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: ISO/TC 21/SC 8 - Gaseous media and firefighting systems using gas
• Drafting Committee: ISO/TC 21/SC 8/WG 5 - General Requirements
• Current Stage: 6000 - International Standard under publication
• Start Date: 02-Dec-2025
• Completion Date: 13-Dec-2025

Relations

• Amends: ISO 21805:2023 - Guidance and recommendations on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systems
• Effective Date: 21-Sep-2024

Standards Content (Sample)

International
Standard
ISO 21805
First edition
Guidance and recommendations on
2023-02
design, selection and installation
of vents to safeguard the structural
AMENDMENT 1
integrity of enclosures protected by
gaseous fire-extinguishing systems
AMENDMENT 1
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
AMENDEMENT 1
PROOF/ÉPREUVE
Reference number
ISO 21805:2023/Amd.1:2025(en) © ISO 2025

ISO 21805:2023/Amd.1:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
ISO 21805:2023/Amd.1:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/d
...

ISO 21805:2023/DAMPRF Amd 1:2025(en)
ISO/TC 21/SC 8
Secretariat: SA
Date: 2025-04-2311-03
First edition
2023-02
Amendment 1
2025-08-22
Guidance and recommendations on design, selection and installation
of vents to safeguard the structural integrity of enclosures protected
by gaseous fire-extinguishing systems
AMENDMENT 1
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
Amendment AMENDEMENT 1
PROOF
ISO 21805:2023/PRF Amd 1(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO #### 2025 – All rights reserved
ii
ISO 21805:2023/DAMPRF Amd 1:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO documentsdocument should be noted. This document was drafted in accordance with the editorial rules
of the ISO/IEC Directives, Part 2 (see ww
...