Safety Procedures & Hazard Prevention Flashcards

Which type of soil is classified as Type A, indicating the HIGHEST stability for excavation work?

Answer: Cemented soils and stable rock

OSHA classifies cemented soils and stable rock as Type A, the most stable and least prone to cave-in.

What is the purpose of a 'spotters' role when a mini excavator is backing up on a job site?

Answer: To direct the machine path and watch for obstacles or personnel

A spotter guides the operator who has limited rear visibility, preventing collisions with workers or objects.

When parking a mini excavator at the end of a shift on a slight incline, the operator should:

Answer: Lower the bucket to the ground, apply the parking brake, and shut off the engine

Lowering the bucket and applying the parking brake prevents unintended movement after shutdown.

A mini excavator operator notices hydraulic fluid leaking from a hose during operation. The correct action is to:

Answer: Shut down the machine, lock it out, and report the leak for repair

A hydraulic leak is a fire and injection hazard; the machine must be taken out of service and locked out until repaired.

Which PPE is always required when working on or around a mini excavator?

Answer: Hard hat, high-visibility vest, and steel-toed boots

Hard hat, hi-vis vest, and steel-toed boots are the standard minimum PPE for all excavation and heavy equipment sites.

What is the primary purpose of calling 811 before digging?

Answer: To have underground utilities located and marked before excavation begins

Calling 811 triggers utility companies to locate and mark their lines, preventing accidental strikes.

An operator is working and smells gas near the excavation. The SAFEST immediate response is:

Answer: Shut down the machine, evacuate the area, and call emergency services

Gas odor indicates a possible utility strike; immediate shutdown, evacuation, and emergency notification are required.