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  • BSI
    21/30429449 DC BS ISO 14520-1. Gaseous fire-extinguishing systems. Physical properties and system design - Part 1. General requirements
    Edition: 2021
    $76.00
    / user per year

Description of 21/30429449 DC 2021

This part of ISO 14520 specifies requirements and gives recommendations for the design, installation, testing, maintenance and safety of gaseous firefighting systems in buildings, plants or other structures, and the characteristics of the various extinguishants and types of fire for which they are a suitable extinguishing medium.

It covers total flooding systems primarily related to buildings, plants and other specific applications, utilizing electrically non-conducting gaseous fire extinguishants that do not leave a residue after discharge and for which there are sufficient data currently available to enable validation of performance and safety characteristics by an appropriate independent authority. This part of ISO 14520 does not apply to explosion suppression.

This part of ISO 14520 is not intended to indicate approval of the extinguishants listed therein by the appropriate authorities, as other extinguishants may be equally acceptable. CO2 is not included as it is covered by other International Standards.

This part of ISO 14520 applies to the extinguishants listed in Table 1. It is essential that it be used in conjunction with the separate parts of ISO 14520 for specific extinguishants, as cited in Table 1.

Table 1
Listed extinguishant
Extinguishant Chemical Formula CAS No. International Standard
CF3l Trifluoroiodomethane CF3l 2314-97-8 ISO 14520-2
FK-5-1-12 Dodecafluoro-2-methylpentan-3-one CF3CF2C(O)CF(CF3)2 756-13-8 ISO 14520-5
HCFC Blend A
HCFC-123 Dichlorotrifluoroethane CHCl2CF3 306-83-2
HCFC-22 Chlorodifluoromethane CHClF2 75-45-6 ISO 14520-6
HCFC-124 Chlorotetrafluoroethane CFClFCF3 2837-89-0
Isopropenyl-1-methylcyclohexene C10H16 5989-27-5
HFC 125 Pentafluoroethane CHF2CF3 354-33-6 ISO 14520-8
HFC 227ea Heptafluoropropane CF3CHFCF3 2252-84-8 ISO 14520-9
HFC 23 Trifluoromethane CHF3 75-46-7 ISO 14520-10
HFC 236fa Hexafluoropropane CF3CH2CF3 27070-61-7 ISO 14520-11
IG-01 Argon Ar 74040-37-1 ISO 14520-12
IG-100 Nitrogen N2 7727-37-9 ISO 14520-13
Nitrogen (50 %) N2 7727-37-9
IG-55 Argon (50 %) Ar 74040-37-1 ISO 14520-14
Nitrogen (52 %) N2 7727-37-9
IG-541 Argon (40 %) Ar 74040-37-1 ISO 14520-15
Carbon dioxide (8 %) CO2 124-38-9


Standard Number21/30429449 DC
TitleBS ISO 14520-1. Gaseous fire-extinguishing systems. Physical properties and system design - Part 1. General requirements
StatusDefinitive
Publication Date2021-05-10
Identical National Standard OfISO/DIS 14520-1
DescriptorsFirefighting, Inspection, Pipework systems, Performance testing, Maintenance, Fire extinguishers (built-in), Hazards, Safety measures, Physical properties of materials, Design, Fire safety, Performance, Acceptance (approval), Fire extinguishers, Fire safety in buildings, Gases
ICS13.220.10 Fire-fighting
CommitteeFSH/18/6
PublisherBSI
Pages115

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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