Before maintenance or repair, what is the first step?

Before maintenance or repair, what is the first step?

• A. Power off, lock out and tag out
• B. Notify supervisor
• C. Gather tools
• D. Check gauges

Answer: (A)

Isolating the equipment to prevent any unexpected energization is the first priority. Powering off the machine stops the energy that could move parts or start controls, and applying lockout and tagout ensures the energy sources can’t be re-energized while work is being done. The lockout uses devices like padlocks and hasps placed on switches, valves, or other energy-control points, and each worker uses their own lock to guarantee they’re the only one who can re-energize the system. The tagout provides a visible reminder that maintenance is in progress and identifies who is responsible and why. Together, these steps create a safe barrier between the worker and the machine, preventing sudden starts or energy releases during the repair or maintenance. After energy is isolated, you can safely proceed with other necessary steps like verifying zero energy, relieving stored energy, and performing the task. Notifying a supervisor, gathering tools, or checking gauges are important later parts of the workflow, but they do not address the immediate risk of unexpected machine motion or energy release.

Isolating the equipment to prevent any unexpected energization is the first priority. Powering off the machine stops the energy that could move parts or start controls, and applying lockout and tagout ensures the energy sources can’t be re-energized while work is being done. The lockout uses devices like padlocks and hasps placed on switches, valves, or other energy-control points, and each worker uses their own lock to guarantee they’re the only one who can re-energize the system. The tagout provides a visible reminder that maintenance is in progress and identifies who is responsible and why. Together, these steps create a safe barrier between the worker and the machine, preventing sudden starts or energy releases during the repair or maintenance. After energy is isolated, you can safely proceed with other necessary steps like verifying zero energy, relieving stored energy, and performing the task. Notifying a supervisor, gathering tools, or checking gauges are important later parts of the workflow, but they do not address the immediate risk of unexpected machine motion or energy release.