As a result it is extremely important to be able to demonstrate competence when assigning a risk rating to a water system. All of Aqua Legion UK Ltd risk assessors are competent to conduct risk assessments on the buildings they are assigned to manage. Our ACOP L8 legionella risk assessments and commitment to BS ensures the risk rating is derived by assessing the following:- The actual and potential risk for Legionella bacteria to colonise and proliferate in the system. The actual and potential risk for the Legionella to be disseminated in an aerosol form.
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Legionnaires' disease. The control of legionella bacteria in water systems
Heat[ edit ] The more expensive[ citation needed ] of these two options is temperature control—i. The high cost incurred with this method arises from the extensive retrofitting required for existing complex distribution systems in large facilities and the energy cost of chilling or heating the water and maintaining the required temperatures at all times and at all distal points within the system. For systems with marginal issues, chlorine provides effective results at 0. For systems with significant Legionella problems, temporary shock chlorination—where levels are raised to higher than 2 ppm for a period of 24 hours or more and then returned to 0.
How to Check Water Temperatures to Minimise the Risk of Legionella Bacteria
Legionella and Legionnaires' disease
Why are hot and cold water temperatures important? Legionellosis is a condition caused by Legionella bacteria, and it affects the respiratory system. It is usually caught by breathing in small droplets of contaminated water. Legionella bacteria can spread in man-made hot and cold water systems if the water temperature allows this to happen. The prime temperature for the bacteria to proliferate at is between 20 — 45 degrees Celsius F. How to check water temperatures Hot and cold water temperatures should be checked monthly at various points throughout the water system. These temperatures should then be recorded so they can be monitored over time to help improve the management of legionella risks and the control processes in place.
ACOP L8 Legionella Risk Assessment services