Are men allowed to work on mobile equipment while in motion?

Are men allowed to work on mobile equipment while in motion?

• A. Yes, with supervision
• B. No, power must be off and blocked against motion
• C. Only with a permit
• D. Only when equipment is stopped briefly

Answer: (B)

The main idea here is that maintenance on mobile equipment must be done with the machine secured so it cannot move. Working on moving machinery is extremely dangerous because unexpected startup or shifting parts can crush or pin a person, or cause injuries from hydraulic or other energy stored in the system. Therefore, power must be shut off and the equipment must be blocked against motion before anyone works on it. This means fully de-energizing the controls, removing stored energy, and using blocks, wheel chocks, or parking brakes to ensure nothing can move, even if someone tries to start or move the machine. Supervision alone isn’t enough to prevent movement, and a permit can be needed for certain tasks but doesn’t replace the fundamental safety step of de-energizing and blocking. Stopping briefly is not adequate because even a moment of movement can cause serious injury, so the equipment must be completely stopped and secured before work begins.

The main idea here is that maintenance on mobile equipment must be done with the machine secured so it cannot move. Working on moving machinery is extremely dangerous because unexpected startup or shifting parts can crush or pin a person, or cause injuries from hydraulic or other energy stored in the system. Therefore, power must be shut off and the equipment must be blocked against motion before anyone works on it. This means fully de-energizing the controls, removing stored energy, and using blocks, wheel chocks, or parking brakes to ensure nothing can move, even if someone tries to start or move the machine.

Supervision alone isn’t enough to prevent movement, and a permit can be needed for certain tasks but doesn’t replace the fundamental safety step of de-energizing and blocking. Stopping briefly is not adequate because even a moment of movement can cause serious injury, so the equipment must be completely stopped and secured before work begins.