Decontamination arrangement, system and decontamination method

A decontamination assembly for pharmaceutical applications, comprising:

• at least one chamber to be decontaminated (4),
• a decontamination liquid storage tank (36) by which a plurality of atomizers (A, B, C, D) disposed in the at least one chamber to be decontaminated (4) for producing a decontaminant aerosol can be supplied with decontamination liquid,
• valve means (27) for supplying the decontamination liquid to the plurality of atomizers (A, B, C, D), wherein the valve means can be controlled by means of electronic control means, the plurality of atomizers (A, B, C, D) being in fluid communication with a ring conduit (32) having an inlet (33) and a separate outlet (34) by means of the valve means (27), decontamination liquid from the decontamination liquid storage tank (36) being conveyable into the inlet of said ring conduit by means of a pump (35) and decontamination liquid flowing out of the outlet of said ring conduit back into the decontamination liquid storage tank (36),
• pressure adjustment means (37) for keeping the pressure in the ring conduit (32) at a predefined liquid pressure range assigned to the ring conduit (32), and
• measuring means (40) for determining a total volume of decontamination liquid dispensed to the plurality of atomizers (A, B, C, D) during a decontamination cycle,
• the decontamination assembly being configured in such a manner that between 5 g and 10 g of decontamination liquid per cubic meter of the at least one chamber to be decontaminated is atomized by all atomizers from the ring conduit into the at least one chamber to be decontaminated during a decontamination cycle and the plurality of atomizers being realized in such a manner that 90% of the decontamination mist or aerosol droplets leaving the plurality of atomizers have a particle size of less than 20 μm.