What must be included in a hot work Risk Assessment?

A hot work Risk Assessment must include a thorough consideration of the environment in which the work is being conducted, particularly in relation to fire hazards and combustible materials. Maintaining stone dust at 85% incombustible is crucial because it helps to suppress potential dust explosions and minimizes the risk of ignition during hot work operations. This percentage reflects a standard that helps ensure safety by limiting the combustible material present, thereby protecting workers and the surrounding area from associated hazards.

In contrast, the other options do not directly address the specific risks related to hot work. While training for personnel on machinery operation is important for overall safety, it does not pertain specifically to the risks presented by hot work activities. Routine equipment performance evaluations are critical for operational safety but are not specific to the fire and explosion risks inherent to hot work scenarios. A list of previous accidents in the area could provide context for risk but does not serve as a proactive measure to mitigate hazards associated with hot work directly. Therefore, maintaining stone dust at the specified incombustible level is the most relevant requirement for a hot work Risk Assessment.