Much like the gas then ??? by which I mean within all systems where competency must be proved there will be people who keep themselves up to date with the ongoing changes (CPD) & there will be others who have not looked at anything for the 5 years from the last time they were tested. How do we tell the two apart ???? should we not test those that do not keep up to date ?? ("what's wrong with that flue above the ceiling" etc ??)
Part G changes - vented as well un-vented now included, 19mm O/V,High Limit stats required on O/V systems, 150mm overhang of tank bases against the cistern base, Safety discharge now allowed into S/Stacks via Hep Valve & PP pipe, pressure pipe allowed as D2, 48 deg C max water to new baths, water saving 125 max daily water, 600mm D1 & I am sure I have missed a few.
How many of those do you know about but much more importantly is how many good guy's on hear know ? (what about the short courser who got his ticket free cos it did the 6129 special)
It is all not new been out a couple of years now & in the trade press etc. If not a reACS then what ?????