Today I was finishing off soldering some of the first fix piping. Yesterday I had completed the pipe work up to a lever operated isolator and had pressurised that part of the pipework to flush and test for leaks.
Today I had a joint to make in the pipework beyond the isolator very close to the boiler casing, so not to blister the paint with the flame I taped a heat shield to protect the area at risk. Just as I finished the the soldering the tape gave way and the heat shield plummeted down and as you have probably worked out dislodged the convenient lever on the isolator sending a fountain of water through all the joints prepared for soldering and wrecking the one I had just soldered!!!!
I did manage to get it all fixed eventually but it involved a lot of mopping up and even more industrial language.
Richard