Abstract: Performing a decontamination process by introducing a decontamination agent into a first containment, the first containment is being surrounded by a housing having a primary inlet for admitting a gas medium into the first containment, and a primary outlet for discharging the gas medium from the first containment. The primary outlet leads to an area external to the first containment, into the open atmosphere, or to a second containment and has a gas-technology connection to a first catalyst unit through which the gas medium flows. By means of the at least first catalyst unit, the decontamination agent, which is introduced into the first containment during the decontamination process and enters with the gas medium into the area, open atmosphere or the second containment, can be split into non-critical components and degraded to a non-critical residual concentration.

Abstract: In the arrangement for performing a decontamination process by means of a decontamination agent introduced into a first containment (9), the first containment (9) is surrounded by a housing (90) which has a primary inlet (92) for admitting a gas medium into the first containment (9), and a primary outlet (91) for discharging the gas medium from the first containment (9). The primary outlet (91) of the first containment (9) leads to an area (5;51-53) external to the first containment (9) or into the open atmosphere (69) or to a second containment (9?). The primary outlet (91) has a gas-technology connection to a first catalyst unit (11) through which the gas medium flows.