Bit OTT really Chris.... don't you think. I have no qualms paying for it myself if only I constantly did pressurised cylinders..So do the Part G then ! I WOULD NOT undertake any work for which I am not deemed as competent and have worked on pressurised systems with others who have commissioned them. I came on here because I noticed a particularly dangerous situation when going to re charge a cylinder which I believe I am able to do as is the customer.
There is a whole deal of difference between a customer carrying out a proceeder & you carrying out work i.e. charging for a service.
With regards to the air gap it keeps failing so my report included options such as fitting an external one... However the cylinder is 20 years old and there are other works such as the discharge pipe that needs addressing (urgently so it may or may not) be worth the customer going to that expense and instead fitting a new cylinder for which I have asked the company to give a price...
I have recognised a potentially dangerous situation with the discharge looked at options. I have advised them of their options re a new cylinder, external expansion and explained to them the benefits / cons of both. In the interim and within the regs i have resolved their issue of a leaking T&P valve by repressurised the cylinder but this has a history of only lasting a few months.
I would suggest that you have not resolved their issue at all, why would the T&P be discharging on pressure when it's pressure setting is always higher that that of the expansion relief safety valve !!!!
Thought I had covered all angles and explained risk re discharge pipe terminating internally 3"s of a communal floor the spray back at 3.5 bar would scalled everyone in the area. Still as long as a G3 qualified engineer fitted it eh ?????? Please feel free to reply what you would have done differently as I find your post quite insulting.