Topic When the refrigerant gas leaks from pipe arrangement even, the refrigerant gas charging system of the vehicle assembly factory which does not have the fact that explosion is generated is offered.SolutionsBeing something which operation to the combustible gas ignites, generates explosion, it is the combustible refrigerant gas charging system of the vehicle assembly factory which uses the fire generation equipment which includes the electric installation of the run motor and the control panel etc. The fire generation equipment which exists in vehicle carrying area 3, it lays out in only the safe area which becomes concentration under 1/4 of the explosive lower limit boundary when leaking of the combustible refrigerant gas. The combustible refrigerant gas in vehicle carrying area 3 the refrigerant gas piping interlocking to the decrease of inside of pipe pressure 2 places or more of 4 which from refrigerant vacuum restoration device 22 is transmitted to charging cancer/gun 5 and refrigerant gas piping, 4 it has automatic valve 42a and 42b which close the tube. By the fact that it has automatic valve 42a and 42b, the safe area is guaranteed. Choice figure Drawing 2
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