Legionella Risk Assessments

Take a comprehensive and holistic approach to risk management

Our recommendation is for Legionella Risk Assessments to be carried out on all hot and cold water systems and cooling water systems and should be reviewed at least every 24 months or under other circumstances. Or if there are changes to the system or responsibility structure. A risk assessment looks to access a system in its entirety and clearly, identify all of the legionella risks that are present within the system. From the legionella risk assessment, a water control regime can be developed to ensure that all the risks identified are managed as efficiently as possible and reduce the risk in the system.

  • Understand why a risk assessment is necessary
  • Discover what a risk assessment involves
  • Get a qualified risk assessment for your facilities

Why you need a risk assessment

If your legionella risk assessment is not correct then the likelihood is that your water control scheme is not correctly and is, therefore, ineffective – this is why we always ensure our risk assessments are some of the most thorough in the industry.

Carrying out risk assessments on hot and cold water systems and cooling water systems is not only an important aspect for the treatment of a system – it is also important for staying within ACoP L8 guidelines and can be a vital piece of evidence that your firm is managing their water systems to the best of its ability.

What a risk assessment involves

Legionella risk assessments must be carried out on cooling towers, evaporative condensers and hot and cold water systems on commissioning and should be reviewed when significant changes are made, monitoring indicates that the control scheme system is not providing control if the system is implicated in an outbreak or at least every 24 months.

Our risk assessments will include the following:

  • The inspection of any tanks to ensure they are compliant with all relevant guidelines
  • The inspection of water heaters and calorifiers to ensure they are compliant with all relevant regulations
  • The Inspection of water distribution systems to ensure they are compliant with all relevant regulations
  • 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 plant’s water system
  • Schematics of all main pieces of a system
  • A Responsibility Structure so that all involved know the level of responsibility they have for the upkeep 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 Logbook 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 ACoP L8 & the Water Supply Regulations (Water Fittings 1999, Water Quality 2000, 2010).

Case Study

A successful automotive components manufacturer employed us to carry out the domestic water treatment on site in July 2009. We immediately noticed problems that indicated site were not complying with legislation due to a previous water treatment supplier.

The Problem

The previous water treatment supplier on site carried out a domestic risk assessment which was never referred to. This meant that site could not be certain that they were complying with legislation and, if an audit was to arise by the HSE, they could not guarantee that they were ACoP L8 compliant.

The Solution

Stuart Queen, the Account Manager for the site, included a domestic risk assessment as part of the contract. This was carried out immediately by our team and a number of issues were identified. These issues were accepted by site and they implemented an action plan to carry out improvements, such as pipework modifications and redundant pipe removals.

The Result

The site was working through our recommendations when they had a HSE audit, focusing on water systems. The HSE were pleased that site had recognised the problems and had created a plan to work through them. After all, recommendations are implemented, the site will be L8 compliant.

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