NMCC Electrician Safety Practice Test

The Lockout Tagout procedure is critical in ensuring that equipment cannot be accidentally started during maintenance activities. This system is designed to protect workers by physically isolating the energy source from the equipment that is being serviced. When a technician prepares to perform maintenance, they apply a lock to the equipment’s energy-isolating device and attach a tag that identifies who has locked out the device and why. This prevents any unauthorized personnel from removing the lock and inadvertently starting the equipment while it is still being worked on, significantly reducing the risk of accidents and injuries.

In contrast, while a safety switch may provide some level of control over equipment, it does not include the comprehensive safety measures associated with Lockout Tagout. Overload relays are designed to protect motors from damage due to excessive current, rather than preventing accidental starts during maintenance. Pressure gauges provide measurements of pressure but do not offer any direct means of ensuring safety during maintenance activities.