Which situation requires the immediate use of safety equipment?

The situation that requires the immediate use of safety equipment is when machinery is in operation. This is crucial because operating machinery often introduces risks, including the potential for moving parts to cause injury, exposure to flying debris, or hazardous conditions related to noise or chemicals. Safety equipment such as goggles, gloves, ear protection, or other personal protective equipment (PPE) is designed to minimize these risks and protect workers from injury.

When machinery is actively being used, individuals must be vigilant about their safety, and having the appropriate protective gear immediately available and worn helps ensure that injuries are avoided. In contrast, the other scenarios, while still potentially requiring certain safety measures or awareness, do not present the same immediate hazards necessitating the use of protective equipment as operating machinery does. For example, having lunch in the shop typically involves no machinery operation, training sessions may focus on safety but depend on the context, and cleaning tools might not expose individuals to imminent danger.