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Learn the characteristics and hazards of Permit-Required Confined Spaces in this comprehensive guide. Understand OSHA regulations, hazardous atmospheres, and safety measures.
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ObjectivesWhen finished with this section, participants will be able to: • List the three characteristics of a Confined Space • List three hazards that define a Permit Required Confined Space
Boilers Baggers Mixing vats Tanks Pipelines Electrical vaults Manholes Elevator pits Pipe chases Sumps Examples of Confined Spaces
Confined Space29CFR1910.146(b) • Limited or restricted access or egress • Not designed for continuous employee occupancy • Large enough to enter and do work
Letters of Interpretation 29 CFR 1910.12(b) defines construction work as "work for construction, alteration, and/or repair, including painting and decorating." Generally speaking reconfiguration of space or installation of substantially new equipment is usually considered construction, whereas refurbishing of existing equipment and space is considered maintenance.
General Industry Standard applies when workers: • Are doing maintenance work • Are repairing existing facilities or process equipment
Permit-Required Confined Space29CFR1910.146(b) • Contains or has the potential for a hazardous atmosphere • Potential for engulfment • Configuration • Any other serious safety or health hazard
Hazardous Atmosphere • Greater than 23.5% Oxygen • Less than 19.5% Oxygen • Greater than 10% of the LEL • Toxins greater than the PEL
ObjectivesWhen finished with this section, participants will be able to: • List the three characteristics of a Confined Space • List three hazards that define a Permit Required Confined Space