Hot work
Any work involving open flames, sparks or heat sufficient to ignite flammable materials, such as welding, cutting, grinding and brazing. Hot work must be controlled by a permit system in areas where flammable materials are present.
Also known as
By jurisdiction
UK HSE
“hot work”SharedDSEAR 2002 requires employers to control ignition sources in areas where explosive atmospheres may be present. HSE guidance requires a hot work permit system wherever work with open flames or heat is carried out near flammable materials. The permit ensures a pre-work inspection, fire watch, and a cooling-down check after work.
Irish HSA
“hot work”SharedThe Safety, Health and Welfare at Work (Explosive Atmospheres) Regulations 2003 (SI 2003/258) require control of ignition sources in areas where explosive atmospheres may form. HSA guidance requires a hot work permit when operations involve open flame or heat near flammable materials.
US OSHA
“hot work permit”SharedOSHA 29 CFR 1910.119(f)(4) requires a hot work permit for cutting and welding on or near covered process equipment. 29 CFR 1910.252 (welding, cutting and brazing) sets fire prevention requirements for hot work in general industry. A permit system is required where explosive or flammable materials are present.
Practitioner note: The permit must cover the fire watch after work stops. Most hot work fires start during the cooling period rather than during the task itself.