What is the purpose of a lockout/tagout system in a mine?

• A. To secure energy sources, prevent accidental re-energisation, and clearly communicate the status to workers.
• B. To schedule maintenance activities.
• C. To train new workers.
• D. To document environmental compliance.

Answer: (A)

Lockout/tagout focuses on controlling hazardous energy during service and maintenance. The idea is to isolate all energy sources that could power a machine or process and prevent any accidental re-energisation while work is being done. A lock physically prevents the equipment from being started, while a tag communicates who is performing the work and that the equipment must remain off. The emphasis is on clear communication and responsibility so everyone on site knows the status and will not energise the equipment inadvertently. In practice, this means identifying all energy sources, isolating them, applying the lock and tag, verifying zero energy, completing the work, and then removing the lock only after the area is safe and the job is finished. In a mine, this protects workers from injuries that could come from unexpected startup or energy release of conveyors, crushers, hydraulics, electrical gear, and other equipment. It’s about safety and preventing harm, not about scheduling maintenance, training, or environmental documentation.