Revised BSI Standard issued – BS 8580-1:2019 Water quality. Risk assessments for Legionella control. Code of practice

What is this standard about?

This standard supplies guidance on a way to conduct Legionella risk assessments, which are a legal requirement. The Management of Health and Safety at Work Regulations 1999 and the Control of Substances Hazardous to Health Regulations 2002 make specific requirements for risk assessment. These regulations apply to the control of Legionella and are embodied in the Approved Code of Practice and guidance document, Legionnaires’ disease: The control of Legionella bacteria in water systems, otherwise known as ACoP L8.

Why should you use this standard?

The standard applies to risk assessments being undertaken on premises, plant and systems for the first time, and to review and audit where a previous assessment has been undertaken and where control measures might have been implemented.

What’s changed since the last update?

The standard has been renamed (from BS 8580 to BS 8580-1) and revised to align it with the HSE ACoP L8 (4th edition) (Approval code of Practice) and associated guidance documents such as HSG 274 (Legionnaires’ disease – Technical guidance) which were revised in 2014. The revision also takes into account HSG 282 – Control of legionella and other infectious agents in spa-pools – a system that was published in January 2017. There was also a need to update references within the standard.

What the changes entail

  • The most significant changes relate to the competence of risk assessors (section 5.1) and the preparation of the risk assessment report (section 9).
  • If followed, the guidance should lead to the production by competent individuals of brief, clear, user-friendly reports lacking superfluous information.
  • Section 8 ‘Evaluation of the Risk’ and section 10 ‘Risk Review and Reassessment’ have also had some re-organisation and modification to improve clarity.
  • The annexes have been updated in particular: annex B on hot and cold water systems has been extensively revised; annex D, Spa Pools, has been updated to encompass the nomenclatural and other changes within HSG 282; and annex E, Other Systems, includes more information on humidifiers, vehicle wash systems, and thermal processing of food.

You can find out more on the BSI website here

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