Confined Space Hazard Assessment Checklist [FREE PDF]

Confined space hazard assessments are mandated under OSHA 29 CFR 1910.146 for general industry and ANSI Z117.1 to identify permit-required conditions before any entry occurs. Employers must evaluate each space for physical, atmospheric, and engulfment hazards, document findings, and determine whether a permit is required. Failure to conduct a proper assessment is among the most cited OSHA violations and is directly linked to confined space fatalities.

Industry: General Industry
Frequency: Per Event
Estimated Time: 30-45 minutes
Role: Confined Space Entry Supervisor
Total Items: 41
Compliance: OSHA 29 CFR 1910.146, ANSI Z117.1-2017, NFPA 350-2022, CSA Z1006-16

Space Identification & Classification

Verify whether the space meets the regulatory definition of a confined space and whether permit-required conditions exist.

Is the space large enough for an employee to bodily enter and perform assigned work?
Does the space have limited or restricted means of entry or exit?
Is the space not designed for continuous human occupancy?
Has the space been classified as Permit-Required based on existing hazard inventory?
Is the confined space clearly posted with danger signage at all entry points?

Atmospheric Hazard Identification

Assess potential atmospheric hazards including oxygen deficiency/enrichment, flammable gases, and toxic contaminants.

Has pre-entry atmospheric testing been conducted by a qualified person?
Is the oxygen level within the acceptable range of 19.5%–23.5% by volume?
Is the flammable gas/vapor concentration below 10% of the Lower Explosive Limit (LEL)?
Are toxic air contaminant levels below applicable PEL/TLV thresholds?
Is there a potential for atmospheric conditions to change during entry operations?
Have atmospheric testing results been documented on the entry permit?

Physical & Engulfment Hazard Assessment

Identify physical hazards such as engulfment potential, internal configuration hazards, and mechanical energy sources.

Is there potential for engulfment by liquid, grain, sand, or other flowable material?
Does the internal configuration present an inward-converging or sloped floor hazard that could trap an entrant?
Are all mechanical, hydraulic, pneumatic, and electrical energy sources isolated and locked/tagged out?
Have all pipelines connected to the space been blanked, blinded, or double-block-and-bled?
Are there fall hazards or unstable surfaces within the space that have been addressed?

Ventilation & Atmospheric Controls

Confirm that adequate ventilation has been established and maintained to control atmospheric hazards.

Has continuous forced-air ventilation been established prior to entry?
Is the ventilation equipment free from recirculating hazardous atmosphere back into the space?
Has the space been verified to meet acceptable atmospheric conditions before entry commences?
Is continuous atmospheric monitoring equipment in place and operational for the duration of entry?
Has the ventilation plan been documented and reviewed by the entry supervisor?

Entry Permit System Review

Verify that the entry permit program is active, complete, and accessible to all authorized entrants and attendants.

Has a written confined space entry permit been completed and authorized by the entry supervisor?
Does the permit include the names of all authorized entrants, attendants, and the entry supervisor?
Does the permit specify all hazards, acceptable entry conditions, and required equipment?
Has the permit duration been established and is it limited to one work shift?
Are cancelled permits retained for at least one year for review and program improvement?

Rescue & Emergency Response Preparedness

Confirm that rescue procedures, equipment, and communication systems are in place before entry begins.

Has a rescue and emergency services plan been developed and communicated to all entry personnel?
Is rescue retrieval equipment (tripod, harness, lifeline) in place at the entry point?
Is an adequate communication system established between the attendant and entrant(s)?
Has the rescue team been notified and do they have the capability to respond within an acceptable timeframe?
Are emergency contact numbers posted at the entry point and known to the attendant?

PPE & Equipment Verification

Ensure all required personal protective equipment and entry equipment is present, inspected, and in serviceable condition.

Has all required respiratory protection been selected based on atmospheric hazard assessment results?
Have all gas detection instruments been calibrated within the manufacturer-specified interval and bump-tested today?
Is appropriate fall protection equipment available and inspected for entries with fall hazards?
Has all PPE been inspected for defects, proper fit, and current certification status?
Are first aid supplies and an AED accessible at the entry site?

Supervisor Authorization & Final Review

Entry supervisor completes final verification and formally authorizes or denies entry based on assessment findings.

Have all hazards identified in this assessment been adequately controlled prior to entry authorization?
Has the entry supervisor conducted a pre-entry briefing with all authorized entrants and attendants?
Are all personnel aware of the conditions requiring immediate evacuation of the space?
Additional notes or conditions requiring follow-up action?
Has entry been authorized (YES) or denied (NO) based on this assessment?

Related Confined Space Safety Checklists

Related Permit Required Checklists

Why Use This Confined Space Hazard Assessment Checklist [FREE PDF]?

This confined space hazard assessment checklist [free pdf] helps general industry teams maintain compliance and operational excellence. Designed for confined space entry supervisor professionals, this checklist covers 41 critical inspection points across 8 sections. Recommended frequency: per event.

Ensures compliance with OSHA 29 CFR 1910.146, ANSI Z117.1-2017, NFPA 350-2022, CSA Z1006-16. Regulatory-aligned for audit readiness and inspection documentation.

Frequently Asked Questions

What does the Confined Space Hazard Assessment Checklist [FREE PDF] cover?

This checklist covers 41 inspection items across 8 sections: Space Identification & Classification, Atmospheric Hazard Identification, Physical & Engulfment Hazard Assessment, Ventilation & Atmospheric Controls, Entry Permit System Review, Rescue & Emergency Response Preparedness, PPE & Equipment Verification, Supervisor Authorization & Final Review. It is designed for general industry operations and compliance.

How often should this checklist be completed?

This checklist should be completed per event. Each completion takes approximately 30-45 minutes.

Who should use this Confined Space Hazard Assessment Checklist [FREE PDF]?

This checklist is designed for Confined Space Entry Supervisor professionals in the general industry industry. It can be used for self-assessments, team audits, and regulatory compliance documentation.

Can I download this checklist as a PDF?

Yes, this checklist is available as a free PDF download. You can also use it digitally in the POPProbe mobile app for real-time data capture, photo documentation, and automatic reporting.