What is the risk associated with unexpected start-up of machines or tools during repairs?

The risk associated with unexpected start-up of machines or tools during repairs is particularly significant because such occurrences can lead to serious injuries or even fatalities. When workers are engaged in maintenance or repair tasks, they typically assume that the equipment is in a safe state and will not operate. If a machine unexpectedly starts while someone is working on it, it can result in severe accidents, including crushing injuries, amputations, or other life-threatening situations.

The nature of machinery and tools often involves moving parts, high-energy systems, or electrical components, which can pose great dangers when they operate unexpectedly. This risk underscores the importance of following lockout/tagout procedures and ensuring that all energy sources are properly controlled before beginning any work on equipment. By neglecting these safety protocols, workers expose themselves and potentially their coworkers to life-altering consequences.