What does a "lockout/tagout" procedure ensure?

A "lockout/tagout" procedure is crucial for ensuring the safety of workers during maintenance or repair activities on machines and equipment. By utilizing this procedure, workers can effectively prevent machines from being accidentally started while they are being serviced. This is achieved by physically locking the machine's energy source in a manner that prevents it from being turned on, and tagging it to indicate that maintenance is in progress. This method of isolating machinery is designed to protect the maintenance personnel from unexpected energization or movement, which could lead to serious injury or even fatal accidents.

The importance of this procedure cannot be overstated, as it directly addresses the risks associated with working on machines that may still have energy sources connected. It establishes a system of accountability wherein only authorized personnel can remove the lock and tag, ensuring that machines remain de-energized until the work is fully completed and verified safe for operation.