🚪 Confined Space Entry
OSHA Compliant Safety Meeting | ~15 minutes
Why This Matters
Confined spaces kill approximately 100 workers per year. Many deaths occur because workers don't recognize the danger.
Confined space entry procedure
1
Identify the confined space
Is it large enough to enter, has limited means of entry/exit, and is not designed for continuous occupancy? All three = confined space.
2
Evaluate hazards
Test for atmospheric hazards (oxygen, combustible gas, toxic substances), physical hazards (engulfment, moving parts), and configuration hazards.
3
Classify the space
Non-permit required or permit-required? If any serious hazard exists, it is a permit-required confined space under OSHA 1910.146.
4
Complete the entry permit
Document: space identification, purpose, authorized entrants, attendant, entry supervisor, hazards, controls, atmospheric readings, and rescue plan.
5
Establish entry team
Assign the entrant, attendant (never leaves the opening), and entry supervisor. Ensure rescue equipment is staged and rescue procedures are established.
6
Monitor continuously
Maintain continuous atmospheric monitoring. The attendant tracks all entrants and maintains communication. Cancel the entry if conditions change.
What is a Confined Space?
A confined space has:
- Limited entry/exit - Hard to get in or out
- Not designed for continuous occupancy - Not meant for people
- Large enough to enter - Can fit a person
Examples:
- Tanks
- Vaults
- Manholes
- Tunnels
- Silos
- Pits
- Boilers
Permit-Required Confined Spaces
A confined space becomes "permit-required" if it has:
- Hazardous atmosphere (or potential)
- Engulfment hazard
- Entrapment hazard
- Other serious hazards
You CANNOT enter without:
- Written permit
- Trained entry team
- Proper equipment
- Rescue plan
The Hazards
Atmospheric Hazards
- Oxygen deficiency - Less than 19.5% oxygen
- Oxygen enrichment - More than 23.5% oxygen
- Flammable gases - Explosive atmosphere
- Toxic gases - Carbon monoxide, hydrogen sulfide
Physical Hazards
- Engulfment - Buried in material (grain, sand, etc.)
- Entrapment - Can't get out
- Mechanical - Moving parts, equipment
- Electrical - Exposed wires
Entry Procedures
Before Entry
- Identify - Is this a confined space?
- Test atmosphere - Test before entry
- Ventilate - If needed
- Lockout/tagout - Isolate hazards
- Get permit - If permit-required
- Assemble team - Entry supervisor, entrant, attendant
During Entry
- Continuous monitoring - Monitor atmosphere
- Attendant present - Never enter alone
- Communication - Stay in contact
- Exit immediately - If conditions change
Entry Team Roles
Entry Supervisor:
- Authorizes entry
- Verifies permit
- Ensures rescue available
Entrant:
- Enters space
- Monitors conditions
- Exits if unsafe
Attendant:
- Monitors entrant
- Calls for help if needed
- Never enters space
Testing Requirements
Atmospheric Testing
- Oxygen: 19.5% - 23.5%
- Flammable: Less than 10% LEL
- Toxic: Below PEL
Test:
- Before entry
- Continuously during entry
- After any change in conditions
Rescue Plan
Never enter to rescue - Call 911 and trained rescue team
Rescue must be:
- Available immediately
- Trained and equipped
- Tested (practice)
Common Mistakes
| Mistake | Consequence |
|---|---|
| Entering without testing | Death from toxic atmosphere |
| Entering alone | No one to call for help |
| No rescue plan | Delayed rescue = death |
| Assuming it's safe | Many spaces look safe but aren't |
Discussion Questions
- What confined spaces are on this project?
- Have you ever entered a confined space?
- What would you do if someone collapsed in a confined space?
Related Resources
- Confined Space Entry Program - Detailed procedures
- Lockout/Tagout - Energy isolation
Never Enter Alone
Confined spaces can kill in minutes. Never enter a confined space alone. Always have an attendant and rescue plan.