CPL 02-00-100 - Application of the Permit-Required Confined Spaces Standard, 29 CFR 1910.146

This instruction establishes enforcement policy and provides explanation of the standard to ensure uniform enforcement in confined spaces (29 CFR 1910.146). 

Also reference CFR 118A - Permit-Required Spaces for General Industry; Correction, CFR 118B - Permit-Required Spaces for General Industry; Correction, CFR 118C - Permit-Required Spaces for General Industry; Correction, SN 67 - applicability of the Permit Required Confined Space Standard, 29 CFR 1910.146, to Concrete Mixing Trucks, and SN 54 - Standby Personnel at Telecommunications Manhole. Additional information and resources can be found on the safety and health topic page for Confined Spaces.