In the UK the Health and Safety Executive has published an Approved Code of Practice known as ACOP L8 – its full title being “Legionnaires disease: the control of legionella bacteria in water”. Safety guidance for cooling towers from the HSE All these conditions can significantly increase the potential for the growth and proliferation of Legionella bacteria, sometimes across wide areas, and so raise the risks associated with an outbreak of Legionnaires’ disease. They have the ability to create and distribute fine water sprays (called aerosols), they process water at elevated temperatures and are often exposed to the atmosphere meaning they can collect organic matter and other debris – an excellent source of nutrients. From a risk management perspective wet cooling towers and evaporative condensers (equipment that use water as part of the cooling process) are considered high risk for various reasons. Controlling Legionella in Cooling Towers with Effective Risk ManagementĬontrolling legionella in cooling towers is incredibly important.
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