Hot work is any task that produces heat, sparks, flames, or enough energy to ignite combustible materials, and it is one of the leading causes of workplace fires and explosions. Doing it safely takes preparation before, vigilance during, and a thorough check after.
What Counts as Hot Work?
Hot work includes any task that produces heat, sparks, or flames.
- Welding
- Cutting
- Grinding
- Brazing
- Soldering
- Any spark-producing operation
Why Is Hot Work Dangerous?
Sparks can travel more than 35 feet and ignite combustible materials that are not immediately visible.
- Fires and explosions
- Burns
- Eye injuries
- Respiratory hazards from fumes and smoke
- Damage to equipment and property
What Should You Do Before Starting Hot Work?
Prepare the area and your equipment before the first spark.
- Obtain a hot work permit if required
- Inspect the work area for combustible materials
- Remove or protect flammable materials within a 35-foot radius
- Ensure fire extinguishers are readily available and fully charged
- Verify ventilation is adequate
- Inspect welding leads, torches, hoses, and equipment for damage
- Wear proper PPE, including a welding helmet or face shield, safety glasses, flame-resistant clothing, leather gloves, hearing protection, and safety boots
What Should You Do During Hot Work?
Stay vigilant and never leave energized equipment unattended.
- Keep a fire watch in place when required
- Remain in the area during hot work operations
- Never leave hot work equipment unattended while energized
- Follow manufacturer instructions for all equipment
- Keep work areas organized and free of trip hazards
- Protect nearby workers from sparks and arc flash
What Are the Fire Watch’s Responsibilities?
A designated fire watch guards against fires the operator cannot see.
- Maintain awareness of sparks and slag travel
- Have immediate access to a fire extinguisher
- Monitor adjacent areas for fire hazards
- Stay for at least 30 minutes after hot work is completed, or according to company policy
What Should You Do After Completing Hot Work?
Close out the job and confirm nothing is still smoldering.
- Shut down and secure equipment
- Inspect the area for smoldering materials
- Confirm no sparks, embers, or heat sources remain
- Close out the hot work permit
- Ensure fire watch requirements have been met