On entering a confined space there are rules,
Myself I fit a "lockout" so that the door, hatch cover CAN NOT be closed in any instants.
Tally boards are used to denote the person/s inside and there "should" be two persons outside for every one person inside the confined space.
I have lost friends from them working alone and had two friends badly burnt when a flash happened while spraying.
I know that there are some people out there that can and do disregard all aspects of safe working conditions and it can seen funny to tell stories of ghosts etc please remember that people have lost THIER lives.
Richard,