What precaution should be taken when an engineer goes beneath equipment?

The correct choice emphasizes the importance of safety precautions that must be taken when an engineer is working beneath equipment. Applying sufficient hand brakes, pulling the emergency cord or Personal Emergency Handling Unit (PEHU), and ensuring that power is removed are critical steps for preventing accidental movements and electrical hazards.

When working under machinery, there is a risk of unexpected operation or movement that could cause serious injury or even be fatal. Therefore, taking these specific actions ensures that the equipment is entirely secure and that there is no chance of it being energized while personnel are in a vulnerable position beneath it.

This choice prioritizes the safety of the engineer by implementing direct measures to manage the risks associated with working in such potentially hazardous environments.