What are the three parts of the OSHA definition of a confined space?

• A. A space large enough to enter and perform work; has limited or restricted means for entry or exit; is not designed for continuous occupancy
• B. A space large enough to enter and perform work
• C. A space with limited means for entry or exit
• D. A space not designed for continuous occupancy

Answer: (D)

The definition of a confined space under OSHA rests on three conditions that all must be true at the same time: the space is large enough to enter and perform work, it has limited or restricted means for entry or exit, and it is not designed for continuous occupancy. When a description includes all three elements together, it matches OSHA’s definition, because any one element alone wouldn’t make a space confined. The other options mention only one or two of the elements, so they don’t fully define a confined space.