Which energy source is commonly addressed in Lockout/Tagout programs, such as an example besides electrical energy?

Which energy source is commonly addressed in Lockout/Tagout programs, such as an example besides electrical energy?

• A. Magnetic energy
• B. Light energy
• C. Stored mechanical energy
• D. Nuclear energy

Answer: (C)

Lockout/Tagout focuses on preventing the unexpected release of energy when a machine is being serviced. While electrical power is a common source people think of, many machines also store energy in mechanical forms that can be released even after power is cut. Stored mechanical energy is why it’s a central focus: components like springs, raised or loaded parts, gravity, or pressurized systems can release suddenly once a lockout is removed or a mechanism is disturbed. This makes it essential to control these energy sources during maintenance to protect workers. For example, a machine with a spring-loaded guard or a hydraulic system with stored pressure could move or release energy even with the electrical supply disconnected. Magnetic energy, light energy, and nuclear energy aren’t typically the kinds of hazards addressed in standard LOTO procedures, so stored mechanical energy is the best fit for the example given.

Lockout/Tagout focuses on preventing the unexpected release of energy when a machine is being serviced. While electrical power is a common source people think of, many machines also store energy in mechanical forms that can be released even after power is cut. Stored mechanical energy is why it’s a central focus: components like springs, raised or loaded parts, gravity, or pressurized systems can release suddenly once a lockout is removed or a mechanism is disturbed. This makes it essential to control these energy sources during maintenance to protect workers. For example, a machine with a spring-loaded guard or a hydraulic system with stored pressure could move or release energy even with the electrical supply disconnected. Magnetic energy, light energy, and nuclear energy aren’t typically the kinds of hazards addressed in standard LOTO procedures, so stored mechanical energy is the best fit for the example given.