In the mid 80s my brother worked at a place that made the wire racks for Little Debbie's and Frito Lays displays. One night everyone went on break except the guy operating the chrome plating line. When everyone returned from break, he was nowhere to be found, so they started looking for him. About an hour later someone looked in the hot (approximately 190° F) rinse and saw his remains on the bottom. He had tried to walk along the top of the wall for some reason, slipped and fell in.
They tried to scoop him out, but, to quote my brother, "he fell apart like a boiled chicken." They had to pump out the tank for the recovery, which took over 24 hrs due to capacity to treat the rinse water as it was pumped out.
The counselor the company brought in to help folks deal with it said that with the shock of the hot water the guy probably died quickly, but my brother and a couple of the others saw marks on the tank walls showing not only where the guy had slipped on the wall, but also where he tried to crawl out but couldn't pull himself out. Boiled alive little at a time seems like it would suck.