Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow Ingestion-build-65808 A gas extinguishing system is

A gas extinguishing system is a fire extinguishing system that extinguishes fire with the help of a gaseous extinguishing agent either through oxygen displacement (reduction of oxygen content) or physical effects (heat extraction)

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neutron radiation and other particle radiation

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This European Standard gives the definitions and general terms

Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow Ingestion-build-65808 A gas extinguishing system isBS EN 1717: 2000 Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow BS EN 1717 deals with the means to be used to prevent the pollution of potable water inside premises and the general requirements of protection devices to avoid pollution by backflow. The hygiene protection specifications of this standard are applicable to all the standards for systems or appliances