12 Aug Confined Space – JSA

Confined Space Job Safety Analysis (JSA)

Job / Task

Entry into, work within, and exit from confined spaces, including spaces that may have limited or restricted means of entry or exit and are not designed for continuous employee occupancy.

Purpose

This Job Safety Analysis (JSA), also known as a Job Hazard Analysis (JHA), identifies hazards associated with confined-space work and establishes controls to prevent atmospheric exposure, engulfment, entrapment, falls, hazardous-energy exposure, fire, and other injuries.

Personnel Qualifications and Roles

Confined-space work shall be performed only by employees who are trained and authorized for their assigned roles. Depending on the space and work, roles may include authorized entrants, attendants, entry supervisors, and personnel responsible for atmospheric testing or rescue.

Personnel shall:

• Understand the hazards of the space and the required entry procedures.
• Follow the entry permit and site-specific confined-space procedures when applicable.
• Use required atmospheric monitoring, PPE, communication, and entry equipment.
• Maintain communication and follow instructions from the attendant or entry supervisor.
• Stop work and exit the space when an unsafe condition, alarm, or evacuation instruction occurs.
• Never enter a confined space for rescue unless specifically trained, equipped, and authorized for that rescue.

Required PPE and Equipment

PPE and equipment shall be selected based on the hazards identified for the specific space and task and may include:

• Hard hat or safety helmet.
• Safety glasses or goggles; face protection when required.
• Safety footwear appropriate to the space and work.
• Gloves appropriate to mechanical, chemical, thermal, or biological hazards.
• Hearing protection where required.
• Fall protection and retrieval equipment when required by the entry procedure or hazard assessment.
• Respiratory protection when required by the atmospheric hazard assessment and applicable respiratory protection program.
• Atmospheric monitoring equipment appropriate to the hazards.
• Communication equipment suitable for the space.
• Lighting and intrinsically safe equipment where required by the identified atmosphere.

PPE does not replace atmospheric testing, ventilation, isolation, permit controls, or other required confined-space controls.

JSA – Job Steps, Hazards, and Controls

Step 1 – Identify and Evaluate the Space

Potential Hazards

• Unknown hazards.
• Atmospheric exposure.
• Unplanned entry.
• Entrapment or restricted access.

Required Controls

• Identify the space before work begins and determine whether it meets the applicable definition of a confined space.
• Evaluate the entry point, configuration, access and egress, internal hazards, previous contents, connected systems, and surrounding conditions.
• Determine whether the space is permit-required or otherwise subject to additional entry controls.
• Review the work to be performed and identify hazards introduced by the task.
• Do not enter until the required evaluation and controls have been completed.

Step 2 – Develop the Entry Plan and Permit

Potential Hazards

• Uncontrolled entry.
• Missing hazard controls.
• Inadequate rescue planning.
• Communication failures.

Required Controls

• Complete the required confined-space entry procedure and permit when applicable.
• Identify the space, work activities, hazards, isolation requirements, atmospheric testing requirements, PPE, communication method, and rescue arrangements.
• Identify authorized entrants, attendants, entry supervisors, and other required personnel.
• Review the entry plan with all affected employees before entry.
• Ensure the entry permit is available at the entry location when required.

Step 3 – Isolate the Space and Control Hazardous Energy

Potential Hazards

• Unexpected equipment startup.
• Electrical shock.
• Pressure release.
• Chemical release.
• Engulfment.
• Flow of materials.

Required Controls

• Identify all sources that could introduce hazardous energy or materials into the space.
• Isolate electrical, mechanical, hydraulic, pneumatic, chemical, thermal, pressure, flow, and other applicable energy sources.
• Use lockout/tagout or other approved energy-control procedures when required.
• Blank, block, disconnect, or otherwise isolate lines and systems as required by the entry procedure.
• Prevent unauthorized operation of valves, switches, equipment, or other energy sources.
• Verify isolation before entry.

Step 4 – Test the Atmosphere Before Entry

Potential Hazards

• Oxygen deficiency or enrichment.
• Toxic gases or vapors.
• Flammable atmosphere.
• Instrument error.

Required Controls

• Use a properly calibrated and maintained atmospheric testing instrument suitable for the identified hazards.
• Test the atmosphere before entry and in the sequence required by the entry procedure.
• Test oxygen concentration, flammable hazards, and toxic contaminants as applicable.
• Sample areas within the space based on the space configuration and potential contaminant locations.
• Document test results when required.
• Do not enter when atmospheric conditions are outside the limits established by the entry procedure.

Step 5 – Ventilate and Maintain Acceptable Conditions

Potential Hazards

• Accumulation of contaminants.
• Oxygen deficiency.
• Fire or explosion.
• Exposure to fumes.

Required Controls

• Provide ventilation when required to establish and maintain acceptable atmospheric conditions.
• Use clean air from a safe source and position ventilation equipment to effectively control the hazard.
• Do not introduce oxygen as a substitute for ventilation.
• Continuously monitor or periodically retest the atmosphere as required by the entry procedure and changing conditions.
• Stop work and evacuate if ventilation fails or atmospheric conditions become unsafe.

Step 6 – Establish the Entry Area

Potential Hazards

• Falls into opening.
• Unauthorized entry.
• Struck-by hazards.
• Blocked egress.

Required Controls

• Barricade or guard the opening when needed to protect entrants and nearby personnel.
• Control vehicle and pedestrian traffic around the entry point.
• Keep access and egress routes clear.
• Position equipment, hoses, cords, and tools so they do not create trip or entanglement hazards.
• Prevent unauthorized personnel from entering the space.

Step 7 – Enter the Confined Space

Potential Hazards

• Falls.
• Atmospheric exposure.
• Entrapment.
• Contact with equipment or surfaces.
• Loss of communication.

Required Controls

• Use the designated entry and exit route.
• Use required fall protection, retrieval, ladders, tripods, winches, or other equipment as specified by the entry procedure.
• Maintain communication with the attendant as required.
• Carry only equipment that can be safely transported into the space.
• Keep body parts and clothing clear of moving equipment, pinch points, and other hazards.
• Maintain required atmospheric monitoring during entry.

Step 8 – Perform Work Inside the Space

Potential Hazards

• Toxic exposure.
• Fire or explosion.
• Electrical shock.
• Heat stress.
• Mechanical injury.
• Restricted movement.

Required Controls

• Perform only the work authorized by the entry procedure and permit.
• Maintain required atmospheric conditions and monitoring.
• Control ignition sources and use equipment suitable for the atmosphere.
• Use appropriate ventilation and respiratory protection when required.
• Control electrical and mechanical hazards through approved energy-control procedures.
• Maintain housekeeping and keep access and egress routes clear.
• Monitor entrants for signs of distress, exposure, or changing conditions.

Step 9 – Maintain Attendant and Communication Controls

Potential Hazards

• Delayed evacuation.
• Unrecognized entrant distress.
• Unauthorized entry.
• Communication failure.

Required Controls

• Maintain an attendant outside the space when required by the entry procedure.
• The attendant shall remain sufficiently close to perform assigned duties and maintain effective communication.
• The attendant shall monitor entrants and recognize conditions requiring evacuation.
• The attendant shall summon rescue or emergency assistance when necessary.
• The attendant shall not enter the space to perform an unplanned rescue unless specifically trained, equipped, and authorized to do so.
• Maintain reliable communication throughout the entry.

Step 10 – Monitor for Changing Conditions

Potential Hazards

• Atmospheric deterioration.
• Unexpected energy release.
• Flooding or engulfment.
• Fire or explosion.
• Structural or environmental changes.

Required Controls

• Continue atmospheric monitoring at the frequency or continuously as required by the entry procedure.
• Monitor ventilation, isolation, weather, connected processes, and other conditions that could affect the space.
• Stop work when alarms, unexpected odors, visible contaminants, equipment changes, or other warning signs occur.
• Immediately evacuate when conditions become unsafe or when the entry supervisor or attendant directs evacuation.
• Reevaluate and reauthorize the entry before work resumes.

Step 11 – Exit the Space

Potential Hazards

• Falls.
• Entrapment.
• Dropped objects.
• Delayed evacuation.

Required Controls

• Exit the space when work is complete or when instructed to evacuate.
• Remove tools and materials in a controlled manner.
• Use designated access and egress equipment.
• Ensure all entrants are accounted for.
• The attendant or entry supervisor shall verify that the space is clear before the entry is closed out.
• Secure the opening after exit when necessary.

Step 12 – Close Out the Entry

Potential Hazards

• Uncontrolled re-entry.
• Unresolved hazards.
• Incomplete documentation.

Required Controls

• Cancel or close the entry permit according to the applicable procedure.
• Document required atmospheric readings, incidents, problems, and corrective actions.
• Remove entry equipment and restore the area to a safe condition.
• Restore energy or connected systems only according to the applicable procedure and after confirming personnel are clear.
• Secure the space against unauthorized entry when necessary.
• Review the entry if hazards or conditions differed from the original plan.

Conditions Requiring Immediate Evacuation

Entrants shall immediately exit the confined space when any condition indicates that continued entry is unsafe or when directed by the attendant, entry supervisor, or other authorized person.

Examples include:

• An atmospheric alarm or unacceptable atmospheric test result.
• Loss of required ventilation or monitoring equipment.
• Failure of a required energy-isolation or hazardous-material control.
• Fire, smoke, explosion, or uncontrolled ignition source.
• Unexpected flooding, engulfment, material flow, or rising liquid.
• Equipment failure or unexpected movement.
• Loss of required communication.
• Entrant illness, injury, distress, or abnormal behavior.
• Any condition not addressed by the entry plan that creates an unsafe condition.

Prohibited Practices

• Enter a confined space without completing the required evaluation and entry controls.
• Enter a permit-required space without the required permit and personnel.
• Enter without required atmospheric testing or monitoring.
• Ignore an atmospheric alarm or evacuation instruction.
• Use oxygen for ventilation.
• Bypass or defeat required energy-isolation controls.
• Allow unauthorized personnel to enter the space.
• Leave an entrant unattended when an attendant is required.
• Perform an unplanned rescue without appropriate training, equipment, and authorization.
• Continue work when ventilation, communication, monitoring, retrieval, or other required controls fail.
• Re-enter after an evacuation until the space has been reevaluated and the required controls have been restored.

Emergency and Rescue Procedures

A rescue plan shall be established before entry whenever rescue or emergency assistance may be required. Rescue shall be performed only by personnel who are trained, equipped, and authorized for the hazards involved.

1. Stop work and evacuate immediately when an emergency or unsafe condition occurs.
2. The attendant shall summon rescue or emergency assistance according to the established plan.
3. Do not enter the space for rescue unless specifically trained, equipped, and authorized to perform the rescue.
4. Use non-entry retrieval methods when appropriate and when they can be used safely.
5. Provide emergency responders with the space location, hazards, atmospheric information, entry status, and other available information.
6. Provide first aid or CPR within the limits of training after the area has been made safe.
7. Secure the space and prevent unauthorized re-entry.
8. Report and investigate the incident or near miss before the entry program is resumed.

Training Requirements

Employees involved in confined-space work shall receive training appropriate to their assigned roles and the hazards of the spaces they may enter.

Training shall address:

• Recognition of confined-space hazards.
• Atmospheric hazards and monitoring.
• Entry permits and entry procedures.
• Energy isolation and hazardous-material controls.
• Ventilation requirements.
• Use of PPE and entry equipment.
• Communication and attendant responsibilities.
• Evacuation criteria and emergency procedures.
• Rescue limitations and the prohibition on unplanned rescue entry.

Additional training shall be provided when duties, equipment, procedures, hazards, or conditions change, or when employees demonstrate inadequate knowledge or unsafe performance.

JSA Review

This JSA shall be reviewed with affected employees before work begins.

The JSA shall be revised or supplemented when:

• The space, entry method, or work activity changes.
• New hazards are identified.
• Atmospheric conditions or ventilation requirements change.
• Energy-isolation or process conditions change.
• An incident, near miss, alarm, or emergency evacuation occurs.
• Existing controls are ineffective.
• Employees identify additional hazards.