Practice Test Geeks(STSC) Safety Trained Supervisor Construction Practice Test
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Hazard Recognition and Risk Assessment Flashcards

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

Read the first 7 Hazard Recognition and Risk Assessment flashcards as text

  1. A supervisor observes that a crane is operating within 20 feet of energized power lines rated at 50 kV. What is the minimum required clearance per OSHA 1926.1408?

    Answer: 15 feet

    OSHA 1926.1408 requires a minimum 20-foot clearance for lines over 50 kV, but the base minimum for lines up to 350 kV is 20 feet; for lines up to 50 kV the minimum is 10 feet—but the voltage here triggers 20 feet.

  2. Which leading indicator is most useful for identifying hazard recognition gaps on a construction site?

    Answer: Near-miss reporting rate and trends

    Near-miss reporting is a leading indicator that reveals hazards before injuries occur, allowing supervisors to act proactively.

  3. A worker is applying spray paint in an enclosed scaffold enclosure. Which hazard category does this PRIMARILY represent?

    Answer: Chemical/health hazard with confined space elements

    Spray painting in an enclosed area creates chemical vapor exposure and potential oxygen deficiency, classifying the hazard as chemical/health with confined-space characteristics.

  4. During a risk assessment, a supervisor must evaluate the likelihood and severity of a hazard. Which combination represents the HIGHEST risk level?

    Answer: High likelihood / High severity

    Risk is a product of both likelihood and severity; a hazard that is both highly probable and highly severe demands the most urgent corrective action.

  5. A toolbox talk reveals that several workers are unfamiliar with the signs of heat exhaustion on a hot day. What type of hazard does this represent?

    Answer: Physical hazard

    Heat stress is classified as a physical hazard because it results from environmental energy (thermal) conditions rather than a substance or biological agent.

  6. Which action best demonstrates a proactive approach to hazard recognition during the planning phase of a construction project?

    Answer: Conducting a pre-construction hazard review using project drawings and site conditions

    Reviewing project drawings and site conditions before work begins allows the team to anticipate and eliminate or control hazards during the design phase, which is the most cost-effective point.

  7. According to ANSI/ASSP Z10, which term describes the process of systematically examining a workplace to identify conditions and practices that could cause harm?

    Answer: Hazard identification

    Hazard identification is the ANSI/ASSP Z10 term for the systematic process of recognizing conditions, behaviors, or events that have the potential to cause harm.