What steps are involved in a typical engine bay safety and lockout procedure during maintenance?

• A. Use PPE and barriers during maintenance.
• B. De-energize and depressurize systems, but do not lockout.
• C. De-energize and depressurize systems, apply lockout/tagout, verify zero rpm, purge fuel, remove ignition sources, and use PPE and proper barriers.
• D. Purge fuel, then start the engine to confirm safety.

Answer: (C)