Definitions for "Confined Space"
Keywords:  exit, vault, boiler, silo, engulfing
Any enclosed area with only one entrance, and/or where hazardous vapour, dust or fumes may accumulate, and/or where oxygen may be deficient.
Any area that has limited openings for entry and exit that would make escape difficult in an emergency, has a lack of ventilation, contains known and potential hazards and is not intended nor designated for continuous human occupancy.
"A space that is large enough and so configured that an employee can bodily enter and perform work. Confined spaces have limited or restricted means for entry or exit and are not designed for continuous occupancy. Confined spaces include storage tanks, bins, boilers, ventilation and exhaust ducts, pits, manholes, vats, and reactor vessels." (DOE OSH Technical Reference,
Keywords:  crowded, small, area
a small or crowded area with
a location with limited access, difficult to get into or out of and not intended to be occupied by human begins