Steve Hunt, managing director of Steven A Hunt & Associates, discusses the need for hospitals and industry experts to stay up-to-date with technology to help tackle the issue of Legionella developing in ‘ill-equipped’ domestic water systems.
Hospitals are becoming increasingly conscious of the methods and systems needed to prevent the development of Legionella in their water systems, but, as a result, their increased knowledge is creating further problems – to an extent which is becoming unmanageable. Many years ago, water was taken for granted, and little was done to control temperatures, but with the spectre of Legionella omnipresent, nothing can now be left to chance.
In recent times, efforts have been made to ensure that the circulation temperature of hot water remains above 50˚C, and recently this has even increased to 55˚C, depending upon which legislation is consulted. Through the use of thermal balancing valves and other ‘on the market’ solutions, there has been a mixed bag of success, but generally there has been improvement, which has been measured via the implementation of temperature sensors in pipework.
Cold water temperatures
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