Patent ID: 7857068

Claim:
An inertization device for a protective room, the inertization device comprising: an inert gas system for supplying an inert gas; a supply pipe system providing fluid communication between the inert gas system and the protective room; a control unit adapted to control the inert gas system to facilitate supplying the inert gas to the protective room for at least one of establishing and maintaining the protective room at a first inertization level and a second inertization level; and a safety device adapted to control a rate the inert gas is supplied to the protective room for the at least one of establishing and maintaining the protective room at the first inertization level and the second inertization level, wherein the safety device further comprises: a bypass pipe system providing fluid communication between the supply pipe system and the protective room; a first control valve disposed in the supply pipe system for selectively supplying the inert gas to the protective room and the bypass pipe system; a second control valve disposed in the bypass pipe system for selectively permitting and militating against a flow of the inert gas therethrough; and a safety device control unit adapted to selectively control the first control valve and the second control valve, wherein the safety device control unit controls the second control valve to control the rate the inert gas is supplied to the protective room for the at least one of establishing and maintaining the protective room at the second inertization level.