What must be ensured before starting work on de-energized equipment?

Before beginning work on de-energized equipment, it is crucial to ensure that the equipment is isolated and locked out. This process, known as lockout/tagout (LOTO), is a vital safety procedure designed to prevent the accidental energization of machinery while maintenance or repair work is being performed.

When equipment is isolated, it means that all sources of power—whether electrical, hydraulic, pneumatic, or mechanical—are disconnected. Locking out the equipment ensures that the disconnection cannot be inadvertently reversed or that someone does not accidentally turn the equipment back on while work is ongoing. This step protects workers from electrical shock, mechanical injuries, or other hazards that could arise from unexpected energization.

Different organizations and regulations emphasize the importance of this step, and it is crucial to follow established safety protocols before any maintenance activity. Ensuring that the equipment is properly locked out creates a safe working environment, preventing potential accidents and injuries.

While having personnel accounted for, obtaining supervisory approval, and ensuring tools are certified are all essential safety practices in a workplace, these actions do not specifically address the critical element of ensuring that the equipment itself is safe to work on. Thus, the isolation and locking out of equipment remain the foremost priority before any work begins.