Hi Catherine, The safety procedures would depend on how bad the situation is and also what type of moulds are present. The the humidity conditions are relatively low and temperatures are also low the dominant species are most likely to be Cladosporium and Alternaria which are both considered allergenic. If conditions are very humid than Stachybotrys may be the dominant species and this is considered allergenic and toxic to humans. Based on my experience the technicians can spend some significant time in the Nacelle so the potential exposure can be very high. If multiple towers are affected that the exposure will also be long term. Based on this the minimum RPE should be FFP3 filters but this can only be employed as a temporary measure for various reasons e.g time restriction on use of the filters, the hierarchy of controls etc. The start of the process is finding out why it’s happening and it can be prevented fo occur in the first place. Then evaluation of operatives exposures should follow to determine what is their actual risk, based on the conditions they work in. Once you have this base data more sensible arrangements can be made about the required control measures.

Hi what exactly would you like to know?