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Risk Assessment & Mitigation Flashcards

7 cards from real MEOC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Risk Assessment & Mitigation flashcards as text
  1. Before beginning excavation in an unfamiliar area, what is the FIRST step an operator should take to assess underground hazards?

    Answer: Call 811 to request utility locates

    Calling 811 triggers a legal locate request that brings utility companies to mark buried lines before any excavation begins.

  2. A mini excavator is working near an embankment when the operator notices the soil beginning to crack along the edge. What should the operator do?

    Answer: Move the machine away from the edge immediately

    Soil cracking near an embankment edge is a warning sign of imminent collapse, and the operator must immediately reposition the machine to safe ground.

  3. Which condition makes a work zone significantly more hazardous when operating a mini excavator?

    Answer: Recently saturated soil after heavy rain

    Saturated soil loses shear strength, increasing risks of collapse, machine sinkage, and ground instability around the excavation.

  4. When conducting a pre-task risk assessment, which tool helps identify ALL stakeholders who could be affected by the excavation work?

    Answer: Job Hazard Analysis (JHA)

    A Job Hazard Analysis systematically identifies tasks, associated hazards, and all persons who may be exposed, including bystanders.

  5. An operator notices a marked gas line is only 18 inches below the planned excavation depth. What is the correct action?

    Answer: Stop and hand dig within 18–24 inches of the marked line

    Within the tolerance zone near marked utilities, hand digging is required to prevent striking and rupturing the gas line.

  6. Which personal protective equipment (PPE) is always required for a mini excavator operator working on an active construction site?

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

    OSHA requires hard hats, high-visibility vests, and steel-toed boots as standard PPE on active construction sites.

  7. What is the primary purpose of establishing an exclusion zone around an operating mini excavator?

    Answer: To prevent unauthorized personnel from entering the swing radius

    An exclusion zone prevents workers and bystanders from being struck by the rotating superstructure or swinging bucket.