Legionella Risk Assesment

A Legionella risk assessment is exactly that – an assessment of the Legionella risks associated with a water system on site. It is an important part of water treatment practise as many legionella outbreaks have been the result of poor water systems management. A risk assessment also outlines protocol which should reduce said risks. Having a risk assessment also helps firms ensure that they are compliant with ACoP L8 standards.

A risk assessment should include the following:

  • The Inspection of all tanks to ensure they are compliant with all relevant legislation.
  • The Inspection of water heaters and calorifiers to ensure they comply with all relevant legislation.
  • The Inspection of water distribution systems to ensure they comply with all relevant legislation.
  • Temperatures to be taken from around the site to ensure they are not at a level to promote the growth of bacteria.
  • The production of an Asset register
  • Digital photographs of the main pieces of the plants water system. 
  • Schematics of all main pieces of a plant’s system
  • A Responsibility Structure so that all involved know the level of responsibility they have for the up keep and maintenance of the water system including chemical treatment. 
  • Recommendations that include the remedial work that is required to bring the system within the guidelines as set out in the ACOP L8 document
  • Process waters can be included if requested
  • A Log Book should be produced for regular monitoring and as a record.

The above would produce recommendations for a site that would ensure they comply with all relevant legislation including the Approved Code of Practice L8 & the Water Supply Regulations.

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