713 Confined Space Program

Where Confined Spaces are Found

• Manufacturing: Confined spaces can be found in manufacturing facilities such as tanks, vessels, and boilers used for chemical processing or other industrial processes. Examples of confined spaces in this industry include storage tanks, mixing vessels, and pressure vessels.
• Construction: In the construction industry, confined spaces can include trenches, excavations, and underground tunnels. Other examples include manholes, sewers, and utility vaults.
• Mining: The mining industry uses confined spaces such as underground mines, tunnels, and shafts. These spaces can be hazardous due to the presence of toxic gases, explosive dust, and the potential for cave-ins.
• Energy: In the energy sector, confined spaces can be found in power plants, refineries, and other facilities that process or store hazardous materials. Examples include boilers, tanks, pipelines, and furnaces.
• Transportation: Confined spaces can be found in various modes of transportation, including ships, airplanes, and trains. Examples include cargo holds, fuel tanks, and engine compartments.

It is difficult to determine which industry has the most confined spaces. However, some industries such as chemical processing or manufacturing, and mining typically have a higher concentration of confined spaces due to the nature of their work and the types of equipment and structures they use.

The general industry confined space standard does not address the unique characteristics of confined spaces in construction, therefore OSHA created a separate rule, 1926 Subpart AA, to protect employees from the hazards resulting from exposure to confined spaces in the construction industry.

You can learn more about confined spaces in construction by taking Course 816, Confined Space Safety in Construction.

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