In order to further reduce particle contamination in clean rooms and other controlled environments, such facilities may make use of air showers.
Air showers are enclosed, specialised chambers which are installed at entrances to clean rooms.
Standard Air Showers make use of HEPA filters and forced airflow to scrub contaminants from gowned up personnel in order to significantly reduce particle contamination carried into the clean room by workers.
Air showers also provide an ISO-classified area which is most commonly located between the cleanroom and gowning area.
Once the operators have put on all the relevant personal protective equipment, they step into the shower so that any residual particles which may have been collected in the gowning area are removed by vigorous forced airflow movement within the air shower.
The air shower follows a programmed cycle and only once this cycle is complete may the operator step out of the air shower into the clean room.
Additionally, depending on the type of facility, air showers may be installed between clean rooms which have different ISO ratings.
The ISO rating refers to the level of cleanliness the room complies with, according to the size and quantity of particles per volume of air.
A common feature found in air showers are interlocking mechanisms which prevent both entrances or exits to be opened at the same time which would allow contaminated air from outside to enter the tightly controlled environment.
This means that operators are required to stay inside the shower chamber until the decontamination cycle is complete and the relevant door is automatically opened.
Therefore, emergency stops are a widely used safety feature for the unlikely event that something should go wrong during the shower cycle.
We are manufacturers and suppliers of some of the highest quality clean room equipment in South Africa, including air showers and HEPA filters.
To find out more about air showers and other clean room equipment used to reduce particle contamination in controlled environments, contact us.
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