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Legionnaires' disease
Risk systems
Hot and cold water systems
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Legionella & Legionnaires' disease
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- Hot and cold water systems
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Terminology
You will need to understand your:
water system
associated equipment, and
be familiar with its constituent parts, such as:
Dead/blind end
– a redundant length of pipe, closed at one end, through which water cannot flow.
Thermostatic Mixer Valves (TMVs)
– these blend hot and cold water to reduce the temperature where a scald risk is present.
Sentinel outlets
– the nearest and furthest/last outlets from hot and cold water cylinders and tanks.
Dead leg
– a pipe leading to an outlet through which water flows but the outlet is unused/rarely used.
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Updated 2021-02-19