A CAT 2 ( time served plumber or associated trade) can do a " Foundation course" of 6 weeks full time theory and " a reasonable amount of time building a suitable portfolio" there are guidelines but it depends on what work actually gets done, a good example is one candidate working with a service engineer they could get through 40 jobs in a week, the next guy work with an installer on 4 large installs over 2 weeks,
Who has the better portfolio ?
Most CAT 2's do 6-8 weeks full time placement building the portfolio, (spread over as long as it takes, ) they don't need to do 70 days, no where near it.
One way to do it is to cut the portfolio building to just cover ccn1, once passed they are competent and can return to the assessment centre as a CAT 1 and do some revision training and sit the specialist subjects.
I've trained many CAT 2 and CAT 3 ( who do 6 months full time 50/50 split between theory and practical ) and some are good, some reasonable and some bad, same as the CAT 1's who are qualified and working in the trade, I think a lot of it is to do with the individuals experience but also to do with their attitude to learning and how safe they want to be.
How hard is it to learn gas? The answer will upset some of you, not very hard at all and that's the truth, some of these guys enter the gas industry from far more difficult jobs and learn it easy, fault finding and repairs is a different thing all together, but there are 100's of house bashes trying to fix boilers at the moment and making a complete hash of it as well, but basic gas servicing can be taught to nearly anyone, as I said its all down to how well they want to leave a job when they are out on their own,
I'm a plumber to trade and had worked on plenty heating jobs on the wet side, I was offered a 5 day ACOPS course by my company, went to college and passed,my ACOPS with no previous has experience, and I ain't the cleverest but I worked damn hard to learn things after I got my chert and NEVER took a chance with anything getting left unsafe, because I care and have the right attitude, like many others, so as I'm not time served in gas should I be excluded?