ISO 14520-9:2019
Gaseous fire-extinguishing systems — Physical properties and system design — Part 9: HFC 227ea extinguishant
This document contains specific requirements for gaseous fire-extinguishing systems, with respect to the HFC 227ea extinguishant. It includes details of physical properties, specifications, usage and safety aspects.
This document is applicable to systems operating at nominal pressures of 25 bar, 42 bar and 50 bar with nitrogen propellant. This does not preclude the use of other systems.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Characteristics and uses
4.1 General
4.2 Use of HFC 227ea systems
5 Safety of personnel
6 System design
6.1 Fill density
6.2 Superpressurization
6.3 Extinguishant quantity
6.4 Other fill density and superpressurization levels
7 Environmental properties
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Characteristics and uses
4.1 General
4.2 Use of HFC 227ea systems
5 Safety of personnel
6 System design
6.1 Fill density
6.2 Superpressurization
6.3 Extinguishant quantity
6.4 Other fill density and superpressurization levels
7 Environmental properties
Bibliography