Patent ID: 8151816

Claim:
A method for decontaminating an unsealed enclosed environment ( 1 ) comprising an inner space ( 2 ) delimited by a wall ( 3 ) having a natural leak ( 4 ), comprising the following steps: the unsealed enclosed environment ( 1 ), having its natural leak ( 4 ), is placed within a sealed decontamination chamber ( 5 ) comprising means for introducing gas ( 6 ) and means for pumping out gas ( 7 , 8 ), the gas contained within the decontamination chamber ( 5 ) is pumped out by adjusting the pressure drop within the decontamination chamber ( 5 ) in such a way so that the difference in pressure between the interior and exterior of the unsealed enclosed environment ( 1 ) is at all times less than the difference in pressure that would cause mechanical warping that would damage the wall ( 3 ) of the unsealed enclosed environment ( 1 ).