Which procedure must be performed before any maintenance work on electrical systems?

Implementing Lockout/Tagout (LOTO) procedures is essential before performing maintenance work on electrical systems because these procedures ensure that the equipment is properly shut off and cannot be accidentally started while maintenance is occurring. LOTO involves the use of locks and tags to isolate energy sources, which helps prevent injury to technicians and maintenance personnel.

By locking and tagging the equipment, workers can ensure that no one else can energize the equipment while they’re working on it. This is particularly crucial in electrical systems, where unexpected re-energization can lead to severe injuries or fatalities. Adhering to LOTO procedures is a key safety regulation in many industries to protect workers during maintenance and repair activities.

Other options, while important, are typically secondary to the implementation of Lockout/Tagout. Conducting a risk assessment is a good practice and can inform safety measures, but without LOTO, the risk of accidental energization remains. Notifying customers and marking areas with warning signs may enhance safety and awareness, yet these actions do not directly prevent electrical hazards the way LOTO does.