scope:

This European Standard applies to systems in which a foam concentrate is added to the water being discharged from the fire-fighting centrifugal pump: a) by a positive-pressure foam proportioning system or b) together with compressed air by means of a compressed-air foam system. In both cases pressure is applied to the foam concentrate in order to permit continuous operation. Such systems are permanently installed in fire-fighting vehicles (or may be designed as mobile or portable devices, providing that they meet minimum safety and performance requirements). Stationary systems are not covered by this standard. This European Standard applies to the design, manufacturing and operation of such systems. This European Standard applies to systems which are used at ambient temperatures ranging from -15 °C to +35 °C as stated in EN 1846-3. NOTE The safety requirements and/or protective measures are specified in clause 4 and the performance requirements in clause 5. In both clauses, the specifications are supplemented by a description of the corresponding tests. Clause 6 describes the classifications. This European Standard does not apply to the technical safety requirements concerning the design and manufacturing of drives, auxiliary equipment, sources of energy or pumps. Furthermore, this standard does not deal with special hazards arising from the particular conditions under which these systems are used, for example: a) handling of any equipment, devices etc. which have to be connected to the system or are joined to it (e.g. handling of branch pipes/nozzles and pressure hoses); b) events specific to the location where the system is set up (e.g. on public roads); c) decommissioning and disposal; d) operation without supervision; e) immunity against electromagnetic fields and electrostatic discharge. Annex E contains all the significant hazards, hazardous situations and events, as far as they are dealt with in this document, identified by risk assessment ...