Hot Work – Key Requirements

 🔥 Hot Work – Key Requirements

1. Hot Work Definition

Hot work covers any activity that produces heat, sparks, flames or could ignite flammable materials, such as:

Welding (arc, gas, TIG, MIG, etc.)

Cutting (oxy-fuel, plasma, mechanical)

Grinding, brazing, soldering

Use of spark-producing tools or flame-producing operations. 

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🧑‍🔧 2. Hot Work Permit

Must obtain a Hot Work Permit before starting any hot work.

Permit issuance follows Aramco Work Permit System procedures.

Only qualified & certified personnel may receive and work under the permit. 

Permit Details Must Include: ✔ Specific task description

✔ Location and duration

✔ Hazards & precautions

✔ Required PPE and controls

✔ Fire watch assignment

✔ Gas test records if required. 

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🔬 3. Pre-Work Safety Actions

Before hot work begins:

Gas & Atmosphere Testing

Conduct gas testing in restricted or potentially hazardous areas.

Hot work must NOT begin unless flammable gas is at 0% of LEL.

Do not work in oxygen-enriched environments (>23.5%) or below safe O₂ levels. 

Permit Communication

Permit receiver must communicate hazards, safety measures, and permit conditions to all workers involved.

All check boxes and required fields must be accurately filled. 

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🔥 4. Fire Prevention Measures

Work Area Preparation

Remove all combustible materials within the vicinity of the work.

If removal isn’t possible, protect materials with fire-resistant blankets or damp cloths.

Barricade the hot work area to prevent unauthorized access. 

Fire Watch

A trained fire watch must be present for the duration of hot work and continue for at least 30 minutes after completion.

Fire watch must remain vigilant and have appropriate firefighting equipment readily available (e.g., extinguishers, fire blankets). 

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🧯 5. Controls & Equipment

Fire extinguishers (appropriate types) must be positioned close to the hot work area.

Welding and cutting tools should be equipped with necessary safety devices like flashback arrestors, check valves, dead-man switches, and grounding clamps. 

Ventilation

Ensure adequate ventilation so fumes and gases do not accumulate and create hazards. 

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📋 6. During & After Work

Monitoring

Regular inspections of the permit location and gas testing must continue as required.

If work conditions change or hazards increase, stop work and cancel/modify the permit. 

Permit Closure

After work completion, the issuer and receiver must perform a final inspection to close the permit.

Original permits shall be filed per company procedures (for example, contracts often require retention for a set period). 

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🧑‍🏫 7. Personnel & Training

Only certified welders or trained personnel should conduct hot work activities.

Workers must know fire hazards, PPE requirements, safe work methods, and emergency procedures. 

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In summary, hot work requirements focus on:

✅ Authorized Hot Work Permit

✅ Gas testing & atmosphere safety

✅ Fire watches and firefighting readiness

✅ Hazard communication to workers

✅ Work area preparation and controls

✅ Monitoring, inspection, and permit closure

✅ Certified/trained personnel. 

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