Hse Training: Explanation Of Legionella Risk Assessment

 A legionella risk assessment is an assessment of the water systems and assets contained within of a domestic water system. A risk assessment needs to have things like nominated authorities, so who responsible for maintaining the site, whose over all responsible the duty holder etc. and if there are onsite maintenance people that need to be detailed in the nominated authorities.

It needs to have schematic diagram, so a plan of the water flow around the building hot and cold water systems. Cold water storage tanks and clora fires, they all need to have full surveys. There need to be surveys of things like dead legs around the building.

There need to be things like a survey of thermostatic mixing valves. There should be photographic evidence of the things that are being detailed and there should be a summary of the Legionella risk assessment & Training. Any remedial actions should be noted in the summary section.

Significance of assessment

Legionella is important to test for legionella. It is potentially fatal because respiratory diseases and manifested manifest itself from there, hence why the government in its HSE guidance documents requires a lesion or a risk assessment and monitoring program to be completed.

The risk factors

Some of the most common risk factors we come across in a risk assessment are things like dead legs, showers that are not being used very often, cold water storage tanks that are dirty and temperature being out of control. Range and showers that are not being used, the showers create an aerosol, stagnant water, air assault Legionella.

It is a massive risk one of the highest risks dead legs say for example you have had a washing machine that has been plumbed in and it is removed. But the pipe taking the water to the washing machine is just capped off in which the stagnant water can sit and then bacteria proliferate dirty tanks. Sediment in tank bacteria can breed straightforward self-explanatory and if we have temperatures that are out of control zone. Contact for Legionella risk assessment!

 So if we have got cold water stored higher than twenty degrees or hot water not over forty five degrees that the Goldilocks temperature zone for bacteria to breed within.

How often do you need to do them?

In legion and a risk assessment it is often asked that how frequently the legionella risk assessment needs to be one. It is scripted or prescribed that every two years it is need to be done. Call for Legionella risk Training!

 As prescribed now a legionary risk assessment if for example a site is low risk, it has names fed cold water and a combi boiler for example not stored water.

It may be that the risk the review would not need to be done at all unless there is any changes to the site.