ISO 14520-12:2015

Gaseous fire-extinguishing systems — Physical properties and system design — Part 12: IG-01 extinguishant

ISO 14520-12:2015 contains specific requirements for gaseous fire-extinguishing systems, with respect to the IG-01 extinguishant. It includes details of physical properties, specification, usage, and safety aspects. ISO 14520-12:2015 covers systems operating at nominal pressures of 160 bar, 200 bar, and 300 bar at 15 °C. This does not preclude the use of other systems, although design data for other pressures are not available at this time.

Systèmes d'extinction d'incendie utilisant des agents gazeux — Propriétés physiques et conception des systèmes — Partie 12: Agent extincteur IG-01

General Information

• Status: Published
• Publication Date: 24-Feb-2015
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: ISO/TC 21/SC 8 - Gaseous media and firefighting systems using gas
• Drafting Committee: ISO/TC 21/SC 8 - Gaseous media and firefighting systems using gas
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 06-Jul-2020

Relations

• Revises: ISO 14520-12:2005 - Gaseous fire-extinguishing systems — Physical properties and system design — Part 12: IG-01 extinguishant
• Effective Date: 03-Oct-2009

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 14520-12
Third edition
2015-02-15
Gaseous fire-extinguishing
systems — Physical properties and
system design —
Part 12:
IG-01 extinguishant
Systèmes d’extinction d’incendie utilisant des agents gazeux —
Propriétés physiques et conception des systèmes —
Partie 12: Agent extincteur IG-01
Reference number
ISO 14520-12:2015(E)
©
ISO 2015

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ISO 14520-12:2015(E)

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© ISO 2015
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ii © ISO 2015 – All rights reserved

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ISO 14520-12:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative reference . 1
3 Terms and definitions . 1
4 Characteristics and uses . 1
4.1 General . 1
4.2 Use of IG-01 systems . 2
5 Safety of personnel . 5
6 System design . 6
6.1 Fill pressure . 6
6.2 Superpressurization . 6
6.3 Extinguishant quantity . 6
7 Environmental properties . 7
© ISO 2015 – All rights reserved iii

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ISO 14520-12:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 21, Equipment for fire protection and fire fighting,
Subcommittee SC 8, Gaseous media firefighting systems using gas.
This third edition cancels and replaces the second edition (ISO 14520-12:2005), which has been
technically revised.
ISO 14520 consists of the following parts, under the general title Gaseous fire-extinguishing systems —
Physical properties and system design:
— Part 1: General requirements
— Part 2: CF3I extinguishant
— Part 5: FK-5-1-12 extinguishant
— Part 6: HCFC Blend A extinguishant
— Part 8: HFC 125 extinguishant
— Part 9: HFC 227ea extinguishant
— Part 10: HFC 23 extinguishant
— Part 11: HFC 236fa extinguishant
— Part 12: IG-01 extinguishant
— Part 13: IG-100 extinguishant
— Part 14: IG-55 extinguishant
— Part 15: IG-541 extinguishant
Parts 3, 4, and 7, which dealt with FC-2-1-8, FC-3-1-10, and HCFC 124 extinguishants, respectively, have
been withdrawn, as these types are no longer manufactured.
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INTERNATIONAL STANDARD ISO 14520-12:2015(E)
Gaseous fire-extinguishing systems — Physical properties
and system design —
Part 12:
IG-01 extinguishant
1 Scope
This part of ISO 14520 contains specific requirements for gaseous fire-extinguishing systems, with
respect to the IG-01 extinguishant. It includes details of physical properties, specification, usage, and
safety aspects.
This part of ISO 14520 covers systems operating at nominal pressures of 160 bar, 200 bar, and 300 bar
at 15 °C. This does not preclude the use of other systems, although design data for other pressures are
not available at this time.
2 Normative reference
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 14520-1:2006, 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.
4 Characteristics and uses
4.1 General
Extinguishant IG-01 shall comply with the specification shown in Table 1.
IG-01 is a colourless, odourless, electrically non-conductive gas at ambient (20 °C) temperatures, with a
density approximately 1,4 times that of air.
The physical properties are shown in Table 2.
IG-01 extinguishes fires mainly by a reduction of the oxygen concentration in the atmosphere of the
hazard enclosure.
Table 1 — Specification for IG-01
Property Requirement
Purity 99,9 % by volume, min.
−6
Moisture 50 × 10 by mass, max.
Suspended matter or sediment None visible
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ISO 14520-12:2015(E)

Table 2 — Physical properties of IG-01
Property Units Value
Molecular mass — 39,9
Boiling point at 1,013 bar (absolute) °C –185,9
Freezing point °C –189,4
Critical temperature °C –122,3
Critical pressure bar abs 49,0
3
Critical volume cm /mol —
3
Critical density kg/m 536
Vapour pressure 20 °C bar abs —
3
Liquid density 20 °C kg/m —
3
Saturated vapour density 20 °C kg/m —
3
Specific volume of superheated vapour at m /kg 0,602
1,013 bar and 20 °C
Chemical formula Ar
Chemical nam
...