Hot Work Authorization

The following applies to hot work performed on the University of Colorado (UCB) campus. A hot work permit or certificate must be obtained before any hot work can be conducted. Prior to beginning hot work, all signatures are to be obtained for the appropriate form.


For one-time hot work authorization, a hot work permit is required.


For routine hot work authorization, a hot work certificate is required. The hot work certificates are valid for one year.

When Hot Work is Prohibited

Hot work on campus is to be prohibited in areas where it cannot be conducted safely under any conditions or where extensive preparation and planning are required to make the area/equipment fire-safe. Hot work is not to be conducted with equipment that contains flammable liquids or gasses.

Standard Hot Work conditions:

  • Locate fixed hot work in noncombustible buildings or combustible building areas with secured and sealed one-hour fire rated noncombustible floors, walls, and ceilings.
  • Maintain the fixed hot work station free of combustible materials and isolate it from surrounding combustible occupancies with physical non-combustible enclosures or open space of at least 35 feet.
  • Provide manual fire extinguishers throughout the fixed hot work station. 

Hot Work is not to be conducted in the following areas:

  • Areas that contain flammable liquids, flammable gases, combustible dusts, or combustible metals.
  • Areas with an oxygen-enriched atmosphere.
  • Areas used for the storage and handling of oxidizer materials.
  • Areas used for the storage and handling of explosives.
  • On partitions, walls, ceilings, or roofs with combustible plastic coverings or cores (e.g., expanded plastic insulation).