What is necessary before restarting rotating equipment post-repair?

Before restarting rotating equipment after repairs, it is essential to ensure that all removed guards are re-installed. This practice is crucial for safety and compliance with operational standards. Guards are designed to protect personnel from the moving parts of the equipment, mitigating the risk of injury. If guards are not in place, the equipment may operate without proper safety measures, exposing operators and nearby personnel to significant hazards.

Reinstalling guards also indicates that the equipment has been fully assembled and is ready for normal operation. It serves as a visual confirmation that appropriate safety protocols have been followed during the repair process. Failure to reinstall guards can lead to unsafe operating conditions, making this step fundamental before any machinery is put back into service.

The other options, while important in their own right, do not directly address the critical safety concerns associated with the physical protection of operators and maintenance personnel that guards provide.