A powered sewage ejector must be cleared by hand. What must occur first?
- AReach in between automatic cycles
- BUse the float switch as isolation
- Isolate and control every hazardous energy source
- DAsk a coworker to hold the switch
Why C is correct
Automatic controls can restart unexpectedly, and electrical, pneumatic, hydraulic, gravity, and stored mechanical energy may remain. Lockout, verification, blocking, and task-specific sanitation controls are needed.