Confined Space Definitions and Examples

Confined Space Entry

Characteristics of Confined Spaces

• Large enough for worker to enter
• Are not designed for continuous worker occupancy
• Limited openings for entry and exit

Large enough to enter

Meeting basic CS criteria

Permit Required Confined Spaces

• One or more of the following:
  • Hazardous atmosphere (known or potential)
  • Material with the potential for engulfment
  • Inwardly sloping walls or dangerously sloping floors
    or
  • Contains any other serious safety hazard

Non-Permit Confined Spaces

Typical Confined Spaces

Some confined spaces are open topped

• Pits
• Degreasers
• Open-topped water tanks
• Ship holds
• Excavations