Free download program lpc rules for automatic sprinkler installations incorporating bs en 1284510/27/2022 ![]() ![]() The risk of catching legionellosis from a properly installed and maintained firefighting system is probably negligible, although this risk may increase for private water supplies, for maintenance personnel and in health care establishments. However, the conditions normally found within well-maintained firefighting systems are not thought able to support the growth of significant populations of legionella. SUMMARY: Firefighting systems and legionellosis The operation of firefighting systems (sprinklers, drenchers and ring mains) may create inhalable water droplets. Persons responsible for cooling towers in which colonies of legionella are shown to exist, by water sampling, may be held to be a breach of the general duty of care. Hospitals and care homes situated in the vicinity of cooling towers should identify resident persons potentially vulnerable to legionellosis some guidance suggests that risks can extend to hundreds of metres. Legionella is present in rivers, ponds and streams and cases of legionellosis are most likely to arise from legionella in domestic water. These cases are usually associated with wet cooling towers for air conditioning systems. Cases are reported only if there is laboratory confirmation of legionella. There are roughly 200 reported cases of legionnaires disease in England and Wales per year, the mortality rate being about 10-15%. ![]() FPA Fire Protection Association Fire Protection Association London Road Moreton in Marsh Gloucestershire GL56 0RH Tel: +44 (0) Fax: +44 (0) Web:ΔΆ CONTENTS Legionellosis 3 Firefighting systems 4 Assessment of risk 5 Control of legionella 6 Conclusions 7 References 7 Further information 7 SUMMARY: Legionellosis The term Legionellosis covers a group of diseases (which includes legionnaires disease, a form of pneumonia) that can be contracted by inhaling water droplets or aerosols containing bacteria from the genus legionella. 1 Fire Protection Association LPC Rules for Automatic Sprinkler Installations Legionella and firefighting systems This Technical Briefing Note is a revised version of a document originally published by the LPC in It presents a summary of knowledge and practice together with references and sources of further information. ![]()
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