Legionella Risk Assessments For Car And Lorry Washes
Vehicle washes are subject to legislation regarding Legionella control and appropriate assessment and management of risks. These vehicle washes include those for Car And Lorry sized vehicles, car washes (those found in fuel stations and stand-alone car wash machines), lorry washes, bus washes (often located at public transport or private coach hire depots) and train wash systems.
Systems either collect water and re-use it or is discharged after initial use. The amount of cover a vehicle wash has is deemed of little significance when evaluating risk.
Checking The Water Supply
This includes checking whether water used in the car or lorry wash system is of a temperature which makes Legionella growth more likely. If so, further control measures can be recommended. Additional advice can be given as a result of tests to check for suitable cleanliness, filtration and pre-treatment where required where process water is used. A suitable biocide may be required for example.
Where dosing systems are appropriate, chemical consumption levels and bacteria levels present can be tested. Recommendations can be made on the use of suitable biocides and whether they are suitable for use alongside other chemicals in the vehicle wash system. Appropriate records can be generated as a result.
Insulation and sun screening of pipework and tanks may be required. Variations in temperature are assessed as part of a legionella risk assessment.
Accurate record keeping including details of routine maintenance, checks, chemical dosing, temperature checks, legionella testing, silt removal and training should be kept on an ongoing basis as part of any legionella control regime.
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