Posted By George Wedgwood
Paul, have a look at http://www.hse.gov.uk/pubns/indg68.pdf
where you will find basic information on water washers. The thing is, anything that will discharge energy to clean a surface, has the ability to do damage to a person as well, if accidentally misused. The risk assessment and subsequent safe working procedure for operators is all about preventing this and assuring you that cleaning is done safely, in a sensible environment, also taking account of any environmental concerns regarding run-off.

Clothing must be appropriate to the assessment and several different types of cleaner will require diferent types of PPE. i.e. a steam generator will require higher temperature resistant clothing and all will require impact resistant face shields as well as goggles worn underneath.

For cleaning vehicles, a specially constructed wash bay is very useful, with a elevated platform (with suitable edge protection) to reach the high parts and a concrete run-off base which discharges into a separator tank.

Additionally, have a read of http://www.hse.gov.uk/pubns/indg231.pdf
which deals with associated electrical risks and requirements for the supply to be fitted with a RCD etc.

I have a sample procedure which I will mail you directly.

Regards, George

Posted By George Wedgwood
Paul, if you can send me your email address (I can't see it), I will forward the procedure. Regards, George