Which type of space would require special entry procedures according to OSHA?

The type of space that requires special entry procedures according to OSHA is a permit-required confined space. These spaces pose significant hazards that can lead to serious illness or injury if proper safety protocols are not followed.

A permit-required confined space is defined by OSHA as a space that has one or more of the following characteristics: it has the potential for hazardous atmospheres (like low oxygen levels or toxic gases), contains difficulty with the means of entry or exit, or has other recognized hazards such as engulfment or the presence of hazardous materials. Because of these risks, workers must undergo safety training, and a permit must be issued before entry, ensuring that all safety measures and precautions are meticulously followed.

This contrasts with non-permit confined spaces, which do not possess these hazards and therefore do not require the same level of stringent procedures. Open spaces and temporary workspaces also do not legally necessitate special entry procedures under OSHA guidelines. Hence, the heightened risks associated with permit-required confined spaces dictate the need for thorough safety protocols and entry permits.