A LOTO procedure should be performed to lock out energy when working on which energy systems?

A LOTO procedure should be performed to lock out energy when working on which energy systems?

• A. Electrical energy systems
• B. Mechanical energy systems
• C. Fluid energy systems
• D. Electrical, mechanical, and fluid energy systems

Answer: (D)

Lockout and tagout is about isolating every energy source that could start or release energy while someone is working on equipment. Machines often have more than one kind of energy: electrical power, mechanical energy stored in springs or moving parts, and fluid energy in pressurized lines or accumulators. To keep maintenance safe, you lock out all of these energy sources so the machine cannot move or surge unexpectedly. That’s why the best answer includes electrical, mechanical, and fluid energy systems. If you only lock one type, another could still energize or release energy and cause injury. For example, even with electrical power disconnected, a hydraulic line could still be pressurized and move a component, or a stored spring could release suddenly. The aim is to reduce any chance of unexpected energization by treating all relevant energy sources.

Lockout and tagout is about isolating every energy source that could start or release energy while someone is working on equipment. Machines often have more than one kind of energy: electrical power, mechanical energy stored in springs or moving parts, and fluid energy in pressurized lines or accumulators. To keep maintenance safe, you lock out all of these energy sources so the machine cannot move or surge unexpectedly.

That’s why the best answer includes electrical, mechanical, and fluid energy systems. If you only lock one type, another could still energize or release energy and cause injury. For example, even with electrical power disconnected, a hydraulic line could still be pressurized and move a component, or a stored spring could release suddenly. The aim is to reduce any chance of unexpected energization by treating all relevant energy sources.