Hot Work – Definition and Pronunciation
What is Hot Work?
Hot work refers to any work involving activities that generate sparks, heat, or flames, such as welding, cutting, grinding, and brazing. These activities pose a fire hazard, especially in environments with flammable materials. Proper safety measures and permits are required to perform hot work to prevent accidents. Pronounced /hɒt wɜrk/, understanding and managing hot work is essential for maintaining workplace safety and compliance.
Examples of Hot Work
Unauthorized work and hot work is prohibited in way of the cargo space.
Many cargo vapours are heavier than air and will accumulate in bilges and other low areas. An area or space that is considered gas-free for hot work or entry will therefore usually be frequently re-tested.

Source: Wise Global Training (from Everything you need to know about Permit-to-Work System, Manual about PTW“The Complete Guide to Permit to Work System (PTW)”)
Copies of permits, such as for cold work, hot work, electrical isolation etc., should be displayed on the equipment at the work site.