ISO 14520-5:2019
(Main)Gaseous fire-extinguishing systems — Physical properties and system design — Part 5: FK-5-1-12 extinguishant
Gaseous fire-extinguishing systems — Physical properties and system design — Part 5: FK-5-1-12 extinguishant
This document contains specific requirements for gaseous fire-extinguishing systems, with respect to FK-5-1-12 extinguishant. It includes details of physical properties, specifications, usage and safety aspects. This document is applicable only to systems operating at nominal pressures of 25 bar, 34,5 bar, 42 bar and 50 bar with nitrogen propellant. This does not preclude the use of other systems.
Systèmes d'extinction d'incendie utilisant des agents gazeux — Propriétés physiques et conception des systèmes — Partie 5: Agent extincteur FK-5-1-12
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INTERNATIONAL ISO
STANDARD 14520-5
Third edition
2019-06
Gaseous fire-extinguishing systems —
Physical properties and system
design —
Part 5:
FK-5-1-12 extinguishant
Systèmes d'extinction d'incendie utilisant des agents gazeux —
Propriétés physiques et conception des systèmes —
Partie 5: Agent extincteur FK-5-1-12
Reference number
ISO 14520-5:2019(E)
©
ISO 2019
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ISO 14520-5:2019(E)
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© ISO 2019
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ii © ISO 2019 – All rights reserved
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ISO 14520-5:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Characteristics and uses . 1
4.1 General . 1
4.2 Use of FK-5-1-12 systems . 2
5 Safety of personnel . 5
6 System design . 5
6.1 Fill density. 5
6.2 Superpressurization . 6
6.3 Extinguishant quantity . 6
6.4 Other fill density and superpressurization levels . 9
7 Environmental properties . 9
Bibliography .11
© ISO 2019 – All rights reserved iii
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ISO 14520-5:2019(E)
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
...
© ISO 2019 – All rights reserved
ISO TC 21/SC 8 N497
Date: 2016-09-15
ISO/PRF 14520-5:2019(E)
Secretariat: SA
Gaseous fire extinguishing systems — Physical properties and system design —
Part 5: FK-5-1-12 extinguishant
Systèmes d'extinction d'incendie utilisant des agents gazeux -- Propriétés physiques
et conception des systèmes -- Partie 5: Agent extincteur FK-5-1-12
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ISO/PRF 14520-5:2019(E)
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 documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 8, Gaseous media and firefighting systems using gas.
This third edition cancels and replaces the second edition (ISO 14520-5:2016), which has been
technically revised. The main changes compared to the previous edition are as follows:
— a new subclause 6.4 on fill density and superpressurization levels has been added.
A list of all parts in the ISO 14520 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
ii © ISO 2019 – All rights reserved
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INTERNATIONAL STANDARD ISO/PRF 14520-5:2019(E)
Gaseous fire extinguishing systems — Physical properties and
system design — Part 5: FK-5-1-12 extinguishant
1 Scope
This document contains specific requirements for gaseous fire-extinguishing systems, with respect to
FK-5-1-12 extinguishant. It includes details of physical properties, specifications, usage and safety
aspects.
This document is applicable only to systems operating at nominal pressures of 25 bar, 34,5 bar, 42 bar
and 50 bar with nitrogen propellant. This does not preclude the use of other systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14520-1, Gaseous fire-extinguishing systems — Physical properties and system design — Part 1:
General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14520-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Characteristics and uses
4.1 General
Extinguishant FK-5-1-12 shall comply with the specification shown in Table 1.
FK-5-1-12 is a clear, colourless, almost odourless, electrically non-conductive gas with a density
approximately 11 times that of air.
The physical properties are shown in Table 2.
FK-5-1-12 extinguishes fires mainly by physical means, but also by some chemical means.
Table 1 — Specification for FK-5-1-12
Property Requirement
© ISO 2019 – All rights reserved 1
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