Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant
This part of EN 15004 contains specific requirements for gaseous fire-extinguishing systems@ with respect to the HFC 125 extinguishant. It includes details of physical properties@ specification@ usage and safety aspects. This part of EN 15004 covers systems operating at nominal pressures of 25 bars and 42 bar@ superpressurized with nitrogen. This does not preclude the use of other systems.