Patent ID: 9220937
Filing Date: 2015-12-29
Classification: A62C

Abstract:
1. Inerting method for extinguishing a fire in a closed room (“target area”) in which an oxygen content in the closed room is reduced within a given time (x) to a specific inerting level, wherein: said inerting level is kept to a certain level within a given regulation range; said inerting level corresponds to a re-ignition prevention level (R); an upper end of said regulation range limited by an upper threshold of oxygen content and a lower end of said regulation range limited by a lower threshold of oxygen content; said upper threshold of oxygen content in the regulation range is smaller than or, at maximum, equal to said re-ignition prevention level (R); the time (x) for lowering the oxygen content to said inerting level is preset; the time (x) for lowering the oxygen content to said inerting level is selected depending on an oxygen content in the closed room at a time a flooding begins for lowering the oxygen content to said inerting level; and said lower threshold of oxygen content in the regulation range is higher than an upper oxygen content limit which is hazardous to humans.