Shipyard Employment eTool
Confined or Enclosed Spaces and Other Dangerous Atmospheres >> Definition of Space
An area on a vessel or vessel section or within a shipyard such as, but not limited to: cargo tanks or holds; pump or engine rooms; storage lockers; tanks containing flammable or combustible liquids, gases, or solids; rooms within buildings; crawl spaces; tunnels; or accessways. The atmosphere within a space is the entire area within its bounds. [29 CFR 1915.11(b)]
Note: 29 CFR 1915 Subpart B applies to all Confined/Enclosed Space Entry throughout the Shipyard Employment. General Industry 29 CFR 1910.146 Permit-Required Confined Space Entry does not apply.
A space bordering a subject space in all directions, including all points of contact, corners, diagonals, decks, tank tops, and bulkheads. [29 CFR 1915.11(b)]
Any space or void with limited access for entry and exit access, such as a double bottom tank, cofferdam, or other space, which, by its design and confined nature can readily create or aggravate a hazardous exposure. [29 CFR 1915.4(p)]
Spaces with limited openings for entry and exit with unfavorable natural ventilation — not intended for human occupancy — can readily aggravate a hazardous exposure because of its design (e.g., double bottom tank, wing tank, cofferdam).
"Any space, other than a confined space, which is enclosed by bulkheads and overhead. These may include cargo holds, tanks, quarters, and machinery and boiler spaces." [29 CFR 1915.4(q)]