I was basing sprinklers on shore side installations John and certainly in high rise and in industrial and commercial premises they do do a good job . I once sat having a casual chat on a channel crossing with a department of trade and Industry surveyor who was going off on his holiday and want to look at the engine room . We were talking about gas carriers and north sea drilling rigs in his opinion bearing in mind the safety aspects that would be applied in an oil refinery for which he had some experience the average rig should be 5 miles long and two miles wide and the same would apply to a gas carrier . I think that he stated your side installations you had to have a two mile clearance from the storage to the accommodation . Add additional couple of mile to the flare stack . I wouldn't expect some little sprinkler to put out either gas carriers or drilling rigs . What they are good at is putting out small fires in compartments so the original flaming refrigerator in the London fire would have been extinguished . 1 worrying facts about this that concerns me is some of the residents and said about the flickering power supply and add hinted to the the reduced voltage . Just using simple Ohm's law then lower the voltage the current goes up increase the current the heat goes up when the heat goes up things melt and catch fire . Looking at this from my experience in factories ashore I would think that I would be sending an electrician out to check the voltage in all high rise flats and make sure you wasn't losing it somewhere , having done some fire brigade training they have a huge problem with high rise with ladders and platforms that they can't read after I believe something like the fifth floor this is why I think sprinklers are essential . The insulated cladding though is absolutely insane because the fireproof version is more expensive but I think that whoever cut the corner and put it in the non fire retardant one should be doing time in jail