What is a confined space?
As a rule of thumb any area which was not designed for regular human occupancy should be considered a confined space. Examples include tanks, silos, hoppers, bins, dust collectors, vats, pipes, sewers, pumping stations, digesters, liquid manure spreaders, chemical storage tanks, and wells.
Who should enter a confined space?
How should you enter a confined space?
The atmosphere must be tested prior to entry and all electrical or mechanical devices locked out, or completely disabled. A safety person is required to watch the entrant at all times, in case of emergency. Often times during tank clean outs, for example, the gas levels in the tank will change drastically as the material is stirred up. Continuous gas monitoring is essential.