13 July 2026

The FIA has published updated guidance to support the safe and professional installation of pipework used in gaseous fixed firefighting systems.

The guidance provides industry best practice for installers and brings together pipework specification information previously contained in BS 5306-4, following the transition to ISO 6183 and BS EN 17966, which do not include the same level of detail. It also complements the BS EN 15004 series by providing practical guidance on pipework installation.

Pipework plays a critical role in delivering the extinguishing agent from storage containers to discharge nozzles within the protected area. Any failure of the pipework or fittings can have serious consequences, including projectile hazards, unintended release of extinguishing agents, structural damage caused by pressure effects, and reduced system performance during a fire.

To minimise these risks, the guidance emphasises that installation should only be carried out by trained and competent personnel with experience in gaseous fixed firefighting systems. Installers should also follow manufacturers' requirements to ensure pipework remains secure and performs as intended during system discharge. 

The new guidance provides a valuable reference for contractors and installers, helping to promote consistent, high-quality installations that support the reliability and safety of gaseous fixed firefighting systems.