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Scalding versus Legionella – balancing the risks

Carole Armstrong, marketing and communications manager, Delabie UK, discusses how to produce and deliver hot water at temperatures that eliminate Legionellabacteria without scalding the user

Under general health and safety law, duty holders must take appropriate precautions to control the risk of exposure to Legionella, but the challenge is how to produce and deliver hot water at temperatures that eliminate Legionella bacteria without scalding the user. 

Until recently, thermostatic mixing valves (TMVs) were widely installed to prevent scalding incidents. Health and Safety Executive guideline HSG274 part 2 states that: “The use and fitting of TMVs should be informed by a comparative risk assessment of scalding risk versus the risk of infection from Legionella.” 

However, an alternative technology has emerged that offers a mechanical solution to point of use temperature control. HSG274 Part 21guidance suggests that: “Where a scalding risk is considered significant … then type 3 TMVs [TMV3] that are pre-set and failsafe should be provided.” 

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Upcoming Events

Care Roadshows - Glasgow

Hampden Park Stadium, Glasgow
16th April 2024

Care Show London

ExCel, London
24 April 2024 - 25 April 2024

Future of Care Leaders Conference

The King’s Fund, London
Tuesday 30th April 2024

Care Roadshows - Liverpool

Aintree Racecourse, Liverpool
14th May 2024

Care Roadshows - Birmingham

Villa Park Stadium, Birmingham
16th May 2024

Care Home Awards

Royal Garden Hotel, London, W8 4PT
17th May 2024

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