17 mbar in 2 mins is pretty good,
but i can beat that, 1st proper gas job i was working with absolute donkey, he was always talking down to me, kept say how he's been a gas engineer for 16 years and how i was a fast track engineer in the job 5 mins, how i was only qualified for domestic and he was commercial etc. Anyhow this one time we were doing a tightness test and it dropped from 24 to 0 like there was an open end, the donkey goes 'well thats the stabilisation period, top it up again'
by the way this donkey has been chucked of the register twice and allowed back on. The 1st time he thought he would do commercial catering which he's not qualified for made a mess and gas safe got called out. The gas safe inspector asks him a few question which he couldnt answer, the inspector trying to give him every chance asks him if he'd like to go and get his books and donkey says 'no thanks'
