As per jacks0003 previous posts this guy left an uncommissioned boiler with cover off and said it is aright to use.Hmm!
Agree with Gas Safe no big deal to have boiler cover off and run the boiler, just so long as its only for test purposes.
The cover does not appear to be the combustion chamber sealed cover so its not dangerous excepting if you stick your hand into it and either get burnt off the combustion chamber or shocked from an electrical contact.
Seems to me all these courses people are going on are scaring people unnecessarily about boilers and people are simply over reacting and claiming people should be reported for nothing much at all. Perhaps the courses rely to much on regulation and not much on science to explain gas installations?
As to the time the guy is taking, well we don't know how much work was required to start with. He is perhaps a newbie unaccustomed to how long things usually take and giving a time from what they feel it should take from looking at a book.
The guy as said may be good just not experienced.
It was not a case of him just just testing it with cover off Bernie.
This is totally unacceptable and a number of major safety regulations have been broken here. I'm not one for sticking someone in it but this guy is a liability and should be reported. There are plenty unqualified fitters doing a better job than this guy.