Confined Space Entry Permit Checklist

What is a confined space entry permit? A confined space entry permit is a written authorization required by OSHA 1910.146 before workers enter a permit-required confined space (PRCS). Confined spaces cause approximately 90 deaths annually. This checklist ensures proper hazard evaluation, atmospheric testing, ventilation, rescue planning, and worker protection for entries into tanks, vessels, silos, pits, and other enclosed areas.

  • Industry: Construction / Manufacturing / Utilities
  • Frequency: Each entry / Before each work shift in confined space
  • Estimated Time: 30-45 minutes
  • Role: Entry Supervisor / Competent Person
  • Total Items: 63
  • Compliance: OSHA 1910.146 (Permit-Required Confined Spaces), OSHA 1926.1200 (Construction Confined Spaces), ANSI Z117.1, NIOSH Criteria Document, HSE Confined Spaces Regulations 1997 (UK)

Confined Space Hazard Identification

Identify all potential hazards per OSHA 1910.146(c)(4) and 1926.1203.

  • Atmospheric hazards possible (toxic, flammable, O2 deficient)?
  • Engulfment hazard (liquids, granular materials)?
  • Mechanical hazards (moving parts, augers)?
  • Electrical hazards present?
  • Thermal hazards (hot/cold surfaces, steam)?
  • Configuration hazards (inwardly converging walls)?
  • Other serious hazards identified?
  • All hazards documented in space evaluation?

Isolation & Lockout/Tagout

Per OSHA 1910.146(c)(5), isolate the space from all hazardous energy and materials.

  • Electrical sources locked out/tagged out?
  • Mechanical equipment locked out?
  • Piping systems blanked, blinded, or disconnected?
  • Steam lines isolated and depressurized?
  • Floor drains secured/plugged?
  • Adjacent confined spaces isolated?
  • All isolation points verified effective?
  • Isolation points documented on permit?

Atmospheric Testing

Per OSHA 1910.146(c)(5)(ii), test atmosphere before entry and continuously during occupancy.

  • Atmospheric monitor calibrated (bump test)?
  • Last calibration date
  • Initial test time
  • Oxygen level (%)
  • Oxygen within safe range (19.5%-23.5%)?
  • LEL/Combustible gas level (%)
  • LEL below 10%?
  • H2S level (ppm)
  • H2S below exposure limits?
  • CO level (ppm)
  • ...and 4 more items

Ventilation Requirements

Ensure adequate ventilation to maintain safe atmosphere.

  • Mechanical ventilation required?
  • Ventilation type
  • Air flow rate adequate for space volume?
  • Fresh air intake from clean source?
  • Exhaust directed to safe location?
  • Ventilation running continuously during entry?
  • Ductwork positioned correctly in space?

Rescue & Emergency Procedures

Per OSHA 1910.146(d)(9), rescue services must be available.

  • Rescue method
  • Non-entry retrieval system in place?
  • Rescue team notified and standing by?
  • Rescue team trained for confined space rescue?
  • Rescue equipment on site and ready?
  • SCBA/SAR available for rescue entry?
  • Emergency contact number posted?
  • Nearest hospital identified (with hyperbaric capability if needed)?
  • Evacuation signal established and understood?

PPE & Equipment

Verify all required personal protective equipment is available and worn.

  • Full body harness with retrieval line required?
  • Entrants wearing proper harnesses?
  • Respiratory protection required?
  • Respirator type used
  • Head protection worn?
  • Eye/face protection as needed?
  • Protective clothing appropriate for hazards?
  • Communication equipment functional?
  • Adequate lighting in space?
  • Electrical equipment intrinsically safe (if required)?

Personnel Qualifications

Verify all personnel are trained per OSHA 1910.146(g).

  • Entrants trained in confined space hazards?
  • Attendant trained in duties and procedures?
  • Entry supervisor trained and qualified?
  • Rescue team trained in confined space rescue?
  • All training current (within 1 year)?
  • All personnel understand their duties?
  • Pre-entry safety briefing conducted?

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