Overview
OSHA 29 CFR 1910.146 establishes requirements for practices and procedures to protect employees from hazards of entry into permit-required confined spaces. This guide covers key requirements and Safety Square features that support compliance.
1910.146(c) - General Requirements
| Requirement | Citation | Safety Square Feature |
|---|
| Written program | (c)(4) | Mother JSA with confined space documentation |
| Hazard evaluation | (c)(2) | Known Site Hazards + Guardian AI analysis |
| Entry permits | (c)(4)(i) | Add Job Step with confined space permit type |
| Training | (c)(8) | Face-gated briefings for confined space work |
1910.146(d) - Permit-Required Confined Space Program
| Requirement | Citation | Safety Square Feature |
|---|
| Entry procedures | (d)(3) | Job steps with sequential controls |
| Testing procedures | (d)(5) | Atmospheric Monitoring Module |
| Communication procedures | (d)(4) | Communication Setup + Messages |
| Rescue procedures | (d)(9) | Emergency Info in Mother JSA |
Atmospheric Monitoring Module Features
1. Four-Parameter Monitoring
- Oxygen % (safe: 19.5-23.5%)
- LEL % (safe: 0-10%)
- CO level (safe: 0-35 ppm)
- H2S level (safe: 0-10 ppm)
2. Auto-Calculated Status
- Safe (green) - All readings normal
- Warning (yellow) - Approaching limits
- Danger (red) - Limits exceeded
- Evacuate (flashing red) - Immediate evacuation required
3. Status Thresholds
Oxygen: <19.5% or >23.5% = DANGER
LEL: >10% = WARNING, >25% = EVACUATE
CO: >35 ppm = WARNING, >100 ppm = EVACUATE
H2S: >10 ppm = WARNING, >50 ppm = EVACUATE
4. Documentation
- Monitor identity registration
- Timestamped readings
- Location per reading
- Corrective actions documented
- Evacuation history logged
1910.146(g) - Training
| Requirement | Citation | Safety Square Feature |
|---|
| Duties-based training | (g)(1) | Role-specific briefing content |
| Training documentation | (g)(3) | Face-gated briefing records |
| Refresher training | (g)(2)(iii) | Re-briefing on scope changes |
Training Documentation
- Face-gated briefings prove comprehension
- Confined space job steps include specific training content
- Completion records include timestamp and verification photo
- Version control ensures training currency
Documentation for OSHA 1910.146 Compliance
| Required Documentation | Safety Square Feature |
|---|
| Permit space program | Mother JSA + confined space job steps |
| Entry permits | Job steps with permit type |
| Atmospheric monitoring | Atmospheric Monitoring Module logs |
| Training records | Face-gated briefing completions |
| Rescue procedures | Emergency Info section |
| Incident reports | Incident reporting with photos |