Posted By Al Beevers One for any pressure systems experts out there. I have a client who insists some of his pressurisation systems - buidling hot water and refrigeration plant - do not require written schemes drawing up nor examinations under them. They aren't small enough to be exempt under 25kW, nor any other exemption from Schedule 1 in the regs. His argument is that any defect would not give rise to danger as they're on roofs/in plant rooms, and any gas release would only affect those areas - not the general workplace areas and staff. Aside from the fact that any maintenance engineers working near this plant would definately be in danger, my argument is that the PSSR 2000 aren't dependant on a risk assessment. If you've got pressure systems of a certain size and pressure, then they should have written schemes for them. I'm quite happy to be told I'm wrong, but has anyone out there had this problem before? Any ideas on changing his mind? Any prosecutions that have occured because of this? Any help on a sunny day when I'm stuck in a windowless dungeon of an office is gratefully received. Al.

Posted By atm Al I believe if the pressure is above 0.5 of a bar above atmospheric pressure or steam is involved then a written examination is required.

Posted By Al Beevers The insurers, RSA, say they need written schemes. There all plenty big enough - generally the refrigeration plant operates at over 30 bar. The client actually believes there is a risk assessment element in deciding what needs a written scheme or not. Any ideas on proving to him this isn't true. He's read the PSSR ACoP, but interprets it very (very, very) differently to me. Al.