Recommended Inspections for Hot and Cold water systems. Service Actions Frequency Calorifiers Inspect the Calorifier internally by removing the Annually, or as inspection hatch or using a Boroscope. Clean by indicated by the rate draining the vessel. The frequency of inspection of fouling. and cleaning should be subject to the results and increased or decreased based on the conditions recorded. Where there is no inspection hatch, purge any Annually, but may debris in the base of the Calorifier to a suitable be increased as drain. indicated by the risk Collect the initial flush from the base of hot water assessment or heaters to inspect clarity, quantity of debris and result of inspection temperature. findings. Check Calorifier flow temperatures. Settings should Monthly modulate as close to 60Cas practicable without going below 60C. Check the return temperatures are not below 50C. Hot water For non–circulating systems: record the Monthly services temperatures at sentinel points (nearest, furthest and long branch outlets) to confirm they are at a minimum of 50C within one minute For circulating systems: record temperatures at Monthly return legs of principal loops to confirm they are at a minimum of 50C. Temperatures can be taken on the surface of metallic pipework. For circulating systems: record temperatures at Quarterly on a return legs of subordinate loops. Temperature rolling monthly rota. readings can be taken on the surface of pipes but where this is not practible, the temperature may be measured and this should be 50C within one minute of running. If the temperature rise is slow it should be confirmed that the outlet is on a long leg and not that the return has failed in that area. All hot water systems (HWS systems): record Representative temperatures at a representative selection of other selection of other points (intermediate outlets of single pipe systems sentinel outlets and tertiary loops in circulating systems) to confirm considered on a they are at a minimum of 50C to create a rotational basis to temperature profile of the whole system over a ensure the whole defined period. system is reaching satisfactory temperatures for legionella control. POU (point Check water temperatures to confirm the heater Monthly six – of use) water operates at 50-60C or check the installation has a monthly, or as heaters (no high turnover. indicated by the risk greater than assessment. 15 litres) Inspect the integral cold water header tank as part Annually. of the cold water storage tank inspection regime.
Recommended Inspections for Hot and Cold water systems. Service Actions Frequency Calorifiers Inspect the Calorifier internally by removing the inspection hatch or using a Boroscope. Clean by draining the vessel. The frequency of inspection and cleaning should be subject to the results and increased or decreased based on the conditions recorded. Annually, or as indicated by the rate of fouling. Where there is no inspection hatch, purge any debris in the base of the Calorifier to a suitable drain. Collect the initial flush from the base of hot water heaters to inspect clarity, quantity of debris and temperature. Annually, but may be increased as indicated by the risk assessment or result of inspection findings. Check Calorifier flow temperatures. Settings should modulate as close to 60Cas practicable without going below 60C. Check the return temperatures are not below 50C. Monthly Hot water services For non–circulating systems: record the temperatures at sentinel points (nearest, furthest and long branch outlets) to confirm they are at a minimum of 50C within one minute Monthly For circulating systems: record temperatures at return legs of principal loops to confirm they are at a minimum of 50C. Temperatures can be taken on the surface of metallic pipework. Monthly For circulating systems: record temperatures at return legs of subordinate loops. Temperature readings can be taken on the surface of pipes but where this is not practible, the temperature may be measured and this should be 50C within one minute of running. If the temperature rise is slow it should be confirmed that the outlet is on a long leg and not that the return has failed in that area. Quarterly on a rolling monthly rota. All hot water systems (HWS systems): record temperatures at a representative selection of other points (intermediate outlets of single pipe systems and tertiary loops in circulating systems) to confirm they are at a minimum of 50C to create a temperature profile of the whole system over a defined period. Representative selection of other sentinel outlets considered on a rotational basis to ensure the whole system is reaching satisfactory temperatures for legionella control. POU (point of use) water heaters (no greater than 15 litres) Check water temperatures to confirm the heater operates at 50-60C or check the installation has a high turnover. Monthly – six monthly, or as indicated by the risk assessment. Inspect the integral cold water header tank as part of the cold water storage tank inspection regime. Annually.
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