“Hot work” is typically defined as any open-flame, spark-producing, or heat-generating activity and is commonly associated with cutting, welding, and soldering operations.
Hot work can create serious fire risks if not properly managed. With proper planning and precautions, these risks can be significantly reduced.
Designated Hot-Work Areas
A designated hot-work area can either be a permanent location or a temporary area set up to safely complete a specific task where the work is being performed.
Designated Hot-Work Area Considerations
The area should:
- Have non-combustible or fire-resistive characteristics and be kept free of combustible materials and flammable liquids. These include gasoline containers, gasoline-powered equipment, loose paper, sawdust, packing materials, or other items that could be easily ignited by a stray or lingering spark.
- Be separated from adjacent areas, either by permanent construction or approved fire-resistant curtains to contain hot-work activities and protect nearby employees from arc flash welding and UV radiation.
- Have an approved fire extinguisher nearby. Employees performing the hot work should be properly trained in its use.
- Have mechanical ventilation, natural ventilation, or a combination of both, depending on the operation and arrangement, to control smoke and fumes.
Note: Hot work conducted in confined spaces presents additional hazards and requires additional safeguards beyond those discussed here.
10 Before and After Hot-Work Operations
- Obtain and complete a Hot-Work Permit from the appropriate authority.
- When possible, schedule hot-work activities early in the day to allow time to identify and address any lingering fire hazards after the work is completed.
- Move all combustible materials and flammable liquids from the area to at least a 35-foot radius.
- Inspect all hot-work equipment for damage or other defects before use. Any deficiencies should be corrected before the hot work begins.
- Secure all loose-fitting clothing, long hair, and jewelry before hot work begins.
- Wear appropriate personal protective equipment (PPE) at all times. Employees should be trained in proper use of the required PPE, and all PPE should be inspected before use.
- Do not leave the hot-work area unattended while the operations progress.
- Disconnect or shut off the fuel supply when the hot work is complete.
- Check the immediate area for stray or lingering sparks and monitor it for at least one hour after the hot work is completed.
- Complete and keep a post-hot-work checklist on file.
A proactive approach to hot work can help prevent costly losses and keep your operations running safely.
Sources:
Occupational Safety and Health Administration. Hot Work. https://www.osha.gov/etools/oil-and-gas/general-safety/hot-work-welding. Accessed 2 July, 2026.
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