Final answer:
The '25 feet rule' for hot work operations mandates a 25-foot safety zone around the work area to protect against fire hazards.
Step-by-step explanation:
The '25 feet rule' for other hot work operation refers to the requirement that establishes a 25-foot safety zone. This safety measure mandates that any flammable materials must be removed or protected within a 25-foot radius of the hot work activities, such as welding, cutting, or brazing. It is an essential part of workplace safety regulations set by OSHA to prevent fires and ensure the protection of workers from hazards associated with hot work operations.