MEOC Safety Procedures & Hazard Prevention 5

Question 1

Which signal means 'Stop' in standard hand signal communication between an excavator operator and a ground guide?

Accepted Answer

One arm raised with closed fist

Answer

Both arms extended horizontally, palms down

Answer

Both hands waving overhead

Answer

Index finger pointing upward and circling

Question 2

What is the purpose of a Job Hazard Analysis (JHA) before operating a mini excavator?

Accepted Answer

To systematically identify and mitigate hazards specific to the planned task

Answer

To record machine hours for maintenance scheduling

Answer

To satisfy fuel consumption reporting requirements

Answer

To log who will operate the machine for liability purposes

Question 3

A mini excavator bucket strikes a buried electrical conduit. What is the operator's FIRST priority?

Accepted Answer

Shut down immediately and evacuate, then call emergency services

Answer

Visually inspect the conduit from the cab

Answer

Move the machine away and call the utility company

Answer

Determine if the conduit is live before evacuating

Question 4

When trenching in an area with Type C soil, OSHA requires walls to be sloped at no steeper than:

Accepted Answer

34 degrees (1.5H:1V)

Answer

90 degrees (vertical)

Answer

53 degrees (0.75H:1V)

Answer

45 degrees (1H:1V)

Question 5

Why should a mini excavator engine be shut off before refueling?

Accepted Answer

To prevent fuel ignition from engine heat or static electricity

Answer

To allow the fuel gauge to read accurately

Answer

To reduce wear on the fuel pump

Answer

So the hydraulic system can depressurize safely

Question 6

Which condition should cause an operator to IMMEDIATELY suspend excavation work?

Accepted Answer

Visible tension cracks forming parallel to the trench edge

Answer

Soil that is slightly damp

Answer

A faint odor that dissipates quickly at surface level

Answer

Spoil pile located 3 feet from the trench

Question 7

What is the correct procedure if a fire breaks out in the engine compartment of a mini excavator during operation?

Accepted Answer

Shut down the engine, exit the machine, and use an extinguisher from a safe distance

Answer

Open the hood immediately to apply a fire extinguisher directly

Answer

Drive the machine to an open area before exiting

Answer

Pour water on the engine to cool it down