The assessor will need to meet with the building manager or responsible person to inspect any previous legionella assessments you may have and your legionella monitoring log book to confirm control measures currently used to control the risk.
They will also need to check the competency of staff which will involve inspecting training records they have. Our assessor will also need to find out about the types of people using the building such as general ages of staff and building users in order to identify if susceptible people are present. This also provides a risk rating for the report which will confirm the risk of exposure.
Once this is complete, then the assessor will need to inspect all of the water system(s) in full. This will involve inspection and testing the mains cold water supplies, cold water tanks, water heaters, water features, heating systems and all pipework feeding your taps, baths, sinks, showers and outlets. Temperatures will need to be tested from as many outlets as possible. Photographs will be taken of general observations and anything else considered to be a risk.
We commonly identify risks such as:
- Dirt and debris In the system (sediment in cold water tanks, scaled taps/showers) infrequently used outlets
- Temperatures out of range (temperatures between 20-45c favour growth of legionella bacteria) and anything which can contribute to the growth of legionella bacteria, including how water droplets can form aerosol.
Our assessor will need access to as many areas of the building and system as possible, which will help with the schematic diagram we will produce for your system(s) as part of the report.
