Course Title

1. Introduction to Inert Entry Operations

• Defining nitrogen inerting and its purpose in preventing fire and explosion hazards

• Applicable international standards and regulatory requirements including (OSHA 29 CFR 1910.146, NFPA 350, and local confined space regulations)

• Distinguishing inert entry from standard confined space entry

• Overview of inert entry incidents and their primary causes including (unauthorized entry without BA, equipment failure, and delayed rescue)

2. Understanding Nitrogen Inerting

• Purpose of nitrogen purging including (displacing flammable vapors and preventing combustion)

• Physiological effects of oxygen-deficient atmospheres including (rapid unconsciousness without warning)

• Identifying vessels and equipment requiring inert entry including (storage tanks, reactors, and process vessels)

• Understanding inerting verification and its limitations before entry

3. Roles and Responsibilities in Inert Entry

• Defining entry team roles including (entrant, hole watch, entry supervisor, and standby rescue team)

• Authorization and competency requirements for each role

• Coordinating responsibilities between entry team and area authority

• Overview of accountability and duty of care obligations for inert entry personnel

4. Breathing Apparatus Systems

• Overview of Supplied Air Breathing Apparatus (SABA) components and air supply systems

• Overview of Self-Contained Breathing Apparatus (SCBA) components and duration limitations

• Selecting appropriate breathing apparatus based on entry duration and task requirements

• Understanding escape set and emergency air supply provisions

5. Pre-Use Inspection of Breathing Apparatus

• Conducting pre-use inspection including (face piece seal, hose integrity, and regulator function)

• Verifying air supply pressure and quality before use

• Identifying defects requiring equipment withdrawal

• Documenting inspection findings before authorizing use

6. Donning, Fit Testing, and Doffing Procedures

• Correct donning sequence and harness adjustment

• Conducting a fit test to verify face piece seal integrity

• Communication and signal verification before entry

• Correct doffing sequence and equipment handover procedures

7. Atmospheric Testing and Verification

• Testing oxygen levels, flammable gas concentration, and toxic gas presence before entry

• Verifying nitrogen purge completion and residual oxygen displacement

• Continuous versus periodic atmospheric monitoring during entry

• Responding to atmospheric readings outside acceptable limits

8. Isolation and Energy Control Verification

• Verifying process isolation including (blinding, valve closure, and line breaking)

• Confirming lockout/tagout status before entry authorization

• Identifying residual hazards including (stored energy and trapped process material)

• Coordinating isolation verification with the permit-to-work system

9. Permit-to-Work and Pre-Entry Authorization

• Reviewing the confined space and inert entry permit before entry begins

• Verifying rescue equipment readiness and standby team availability

• Confirming atmospheric testing results and isolation status on the permit

• Recognizing conditions requiring permit suspension or entry denial

10. Entry Team Communication Protocols

• Establishing communication methods including (radio, signal line, and visual contact)

• Maintaining continuous communication between entrant and hole watch

• Communication protocols during air supply monitoring and task progress updates

• Escalation procedures when communication is lost or degraded

11. Safe Entry and Work Procedures

• Safe entry sequencing including (verification of BA function immediately before entry)

• Managing air hose and umbilical routing during entry and movement

• Task execution procedures while maintaining continuous BA support

• Managing entrant fatigue and air supply duration during extended tasks

12. Air Supply Monitoring and Duration Management

• Monitoring air supply pressure and consumption throughout the entry

• Understanding duration limits based on air source capacity and task demand

• Recognizing early warning indicators of low air supply

• Planning task rotation and entrant relief around air supply constraints

13. Hole Watch and Standby Rescue Duties

• Maintaining continuous accountability of entrants inside the vessel

• Monitoring atmospheric conditions and entrant status throughout the entry

• Verifying standby rescue equipment readiness including (retrieval lines and davit systems)

• Prohibiting unauthorized entry attempts by the hole watch during an emergency

14. Emergency Response — Breathing Apparatus Failure

• Recognizing signs of breathing apparatus failure including (air supply interruption and regulator malfunction)

• Immediate response actions including (activating escape set and signaling for retrieval)

• Coordinating emergency retrieval without entering the inert atmosphere unprotected

• Post-failure equipment quarantine and investigation requirements

15. Emergency Response — Entrant Incapacitation

• Recognizing signs of entrant distress or incapacitation

• Non-entry rescue procedures including (retrieval line and mechanical extraction)

• Prohibiting rescue entry without full breathing apparatus protection

• Coordinating with emergency medical response following retrieval

16. Confined Space Configuration and Access Considerations

• Identifying vessel entry point types including (manways, nozzles, and access hatches)

• Managing restricted access and egress challenges specific to vessel geometry

• Rigging considerations for entry and retrieval equipment

• Identifying additional hazards including (internal obstructions and residual product)

17. Rescue Equipment and Retrieval Systems

• Overview of retrieval systems including (tripods, davit arms, and winch systems)

• Verifying retrieval equipment rated capacity and condition before entry

• Coordinating retrieval system deployment with entry team roles

• Conducting retrieval system function checks before authorizing entry

18. Post-Entry Procedures and Equipment Decontamination

• Verifying complete exit of all entrants before permit closure

• Post-entry equipment inspection and decontamination procedures

• Restoring isolation and returning equipment to service

• Documenting entry completion and any deviations encountered

19. Documentation and Recordkeeping

• Completing inert entry permit documentation accurately

• Maintaining breathing apparatus inspection and usage records

• Recording atmospheric testing results and entry team assignments

• Retaining records in accordance with regulatory and site requirements

20. Training, Competency, and Program Sustainment

• Verifying individual competency for inert entry roles before authorization

• Conducting scenario-based drills to maintain team readiness

• Maintaining training and certification currency for entry team members

• Supporting organizational review of inert entry procedures and lessons learned

21. Group Discussion and Case Studies

• Case studies from regional BA/N2 inert entry incidents including (breathing apparatus failure, delayed rescue, and unauthorized entry) and lessons learned in prevention

• Group discussion on common inert entry failures including (rushed verification, inadequate hole watch vigilance, and equipment maintenance gaps)

• Sharing regional best practices including (standby rescue team readiness and shift handover continuity for ongoing inert entries)

• Discussion on sustaining a disciplined, verification-driven culture for inert entry operations