A tight or enclosed space that is hard to get in or out of and may have dangerous air or physical hazards.
A confined space is a space large enough for a worker to enter and perform work, with limited means of entry or exit, and not designed for continuous occupancy. A permit-required confined space also contains serious safety or health hazards such as hazardous atmospheres, engulfment potential, or configuration hazards. Entry into permit-required confined spaces requires an entry permit, atmospheric testing, and a trained attendant.
Workers entering the underground utility vault required a confined space entry permit and continuous air monitoring before and during entry.
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