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Legionella monthly monitoring (hot and cold water)

The monthly routine from the UK written scheme (HSG274 Part 2, Table 2.1) and the equivalent monitoring an ASHRAE 188 water management program sets for hot and cold water systems. Temperatures are number fields with limits, so a cold outlet above 20 °C or a hot outlet below 50 °C is flagged as you record it.

4 sections, 16 items

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Frequency
Monthly for sentinel outlets and calorifiers, quarterly for showerheads, six-monthly for cold water tanks, annually for the full review, as the written scheme sets.
Photos and notes it expects
Thermometer readings per outlet, the time taken to reach temperature, a photo of any tank or outlet in poor condition, and the operator's signature.
Region
Global
Reviewed

01Hot water

  1. Calorifier flow temperature (°C), target 60 or above *

    Number

  2. Calorifier return temperature (°C), target 50 or above *

    Number

  3. Sentinel hot outlet furthest from the calorifier: temperature after one minute (°C), target 50 or above (55 in healthcare) *

    Number

  4. Sentinel hot outlet nearest the calorifier: temperature after one minute (°C) *

    Number

  5. TMVs, if fitted, checked for correct operation

    Pass / fail

02Cold water

  1. Sentinel cold outlet furthest from the tank or mains: temperature after two minutes (°C), target 20 or below *

    Number

  2. Sentinel cold outlet nearest the tank or mains: temperature after two minutes (°C) *

    Number

  3. Cold water storage tank temperature (°C), target 20 or below

    Number

  4. Tank lid fitted, insulated, no debris or discolouration

    Six-monthly item; photo the inside of the tank.

    Pass / fail

  5. Photo of the tank interior

    Photo

03Outlets and little-used areas

  1. Little-used outlets flushed weekly, log confirmed *

    Yes / no

  2. Showerheads and hoses cleaned and descaled in the last quarter

    Yes / no

  3. Dead legs or redundant pipework identified since the last check

    Yes / no

04Deviations and sign-off

  1. Any reading outside the control limits reported to the responsible person *

    Yes / no

  2. Corrective action taken or job raised

    Text

  3. Operator signature *

    Signature

* Required

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