What it means
Hot work is any job that makes sparks, flame or heat that could start a fire. Welding, torch cutting, brazing and grinding are the common ones. A hot work permit is the paperwork that says the area was checked before the job started.
The permit usually names the work, the location, the person doing it and the time window. It also records the fire controls, such as moving combustible material, covering what can't be moved, having an extinguisher at hand and posting a fire watch.
The exact requirements come from your company, your insurer, your customer and the current rules. Follow your site's own procedure.
Why it matters
Sparks travel and fires can start well after the work stops. A permit gets someone to look around before the first arc, and it sets a watch afterward. It records that the check happened, but it can't make the area safe by itself.
What it looks like on a site
- The welder or crew lead asks for the permit before starting, not after setting up.
- Someone walks the area and looks for combustibles, floor openings and what's on the other side of walls.
- A fire watch is assigned, with an extinguisher and a way to call for help.
- The watch continues for the period your procedure requires after the work stops.
- The permit is signed off and kept with the job records.
This is general information, not legal advice. Check the current rule and your own procedures. Back to the glossary