Which energy sources should be considered during lockout/tagout planning?

Which energy sources should be considered during lockout/tagout planning?

• A. Electrical energy only.
• B. Mechanical, hydraulic, and thermal energy.
• C. Electrical, mechanical, hydraulic, pneumatic, thermal, chemical, gravity, and stored energy.
• D. Kinetic and potential energy only.

Answer: (C)

Lockout/tagout planning requires identifying every energy source that could harm a worker during maintenance. You must plan to control electrical, mechanical, hydraulic, pneumatic, thermal, chemical, gravity, and any stored energy in or around the equipment. Electrical energy is often a major hazard, but moving parts can be driven by stored springs or hydraulic and pneumatic systems; heat or hot fluids can cause burns; chemicals inside equipment can release hazardous energy; gravity can cause loads to move or drop; stored energy includes charged capacitors, compressed springs, or pressurized vessels. By recognizing and isolating all these forms, you prevent unexpected energization or energy release that could injure someone performing the work. Focusing on only one or a few energy forms leaves other hazards unaddressed, which is why a comprehensive list like this best fits safe planning.

Lockout/tagout planning requires identifying every energy source that could harm a worker during maintenance. You must plan to control electrical, mechanical, hydraulic, pneumatic, thermal, chemical, gravity, and any stored energy in or around the equipment. Electrical energy is often a major hazard, but moving parts can be driven by stored springs or hydraulic and pneumatic systems; heat or hot fluids can cause burns; chemicals inside equipment can release hazardous energy; gravity can cause loads to move or drop; stored energy includes charged capacitors, compressed springs, or pressurized vessels. By recognizing and isolating all these forms, you prevent unexpected energization or energy release that could injure someone performing the work. Focusing on only one or a few energy forms leaves other hazards unaddressed, which is why a comprehensive list like this best fits safe planning.