What type of work should never be done in or near areas with flammable or combustible vapors or liquids?

Hot work refers to any activity that involves open flames or the generation of heat and sparks, such as welding, soldering, brazing, cutting, or grinding. These activities can easily ignite flammable or combustible vapors and liquids that may be present in the environment. When performing hot work, it is crucial to ensure that the area is free of such hazards, as the risk of fire or explosion is significantly heightened in the presence of ignitable materials.

By contrast, cold work, electrical work, and maintenance work can often be conducted with less immediate risk; however, precautions should still be observed, particularly in environments where flammable substances might be present. Nonetheless, none possess the same inherent risk factors associated with the generation of heat and sparks as hot work does. Therefore, ensuring that hot work is conducted in a safe environment is critical to promoting workplace safety and preventing accidents.