Which of the following actions should be taken before working on controls that may disrupt plant operations?

Which of the following actions should be taken before working on controls that may disrupt plant operations?

• A. Have an operator present
• B. Shut down all power
• C. Lockout and tagout all circuits
• D. Wear safety goggles

Answer: (A)

Before working on controls that could disrupt plant operations, the priority is to ensure there is zero energy present and nothing can re-energize the equipment while you work. The proper safeguard is lockout and tagout of all energy sources. This means applying a lock to the energy shutoff and placing a tag with your information so no one else can restore power until you’ve completed the work and removed the lock. It provides a clear, verifiable isolation of electrical, pneumatic, hydraulic, and mechanical sources, preventing unexpected energization. Simply having an operator present doesn’t guarantee isolation, as someone could still restore power. Shutting down power alone may leave stored or residual energy in components like capacitors or springs. Wearing safety goggles protects your eyes from hazards but doesn’t stop an energy release. Lockout and tagout directly controls energy to keep you safe while you work.

Before working on controls that could disrupt plant operations, the priority is to ensure there is zero energy present and nothing can re-energize the equipment while you work. The proper safeguard is lockout and tagout of all energy sources. This means applying a lock to the energy shutoff and placing a tag with your information so no one else can restore power until you’ve completed the work and removed the lock. It provides a clear, verifiable isolation of electrical, pneumatic, hydraulic, and mechanical sources, preventing unexpected energization.

Simply having an operator present doesn’t guarantee isolation, as someone could still restore power. Shutting down power alone may leave stored or residual energy in components like capacitors or springs. Wearing safety goggles protects your eyes from hazards but doesn’t stop an energy release. Lockout and tagout directly controls energy to keep you safe while you work.