TABLE III

Assessment of Humidity Hazard

HazardSub-FactorsDescription and ReasonWeighting/Score
Wet or dry area probabilityDry areaProvided cleanrooms are cleaned and disinfected to standard, there should theoretically be few sources for microbial growth. The main transmission of micro-organisms will be by people or air. Air acts as a vector for micro-organisms, but not as a growth source. Areas with water present a greater risk, and so a higher weighting has been afforded to wet areas and to wash-bays.1
Wet areaBased on the above assessment, areas with water present a greater risk, and so a higher weighting has been afforded to wet areas and to wash-bays.2