BS 5306-7:1988 specifies requirements and gives recommendations for powder fire extinguishing systems which discharge powder complying with BS 6535-3 from a container, or centrally grouped containers, through pipework or a hose to a nozzle or nozzles within the hazard area. It covers both stored pressure and gas container systems, with maximum working pressures not exceeding 25 bar at 20 °C.
This standard does not deal with powder portable fire extinguishers (which are covered, together with portable fire extinguishers of other types, in BS 5423 and BS 5306-3), transportable extinguishers, modular systems in which powder containers are positioned at more than one point, or with fixed extinguishers.
Powder system for explosion suppression are not covered in this part of BS 5306.
