Practice Test Geeks(STSC) Safety Trained Supervisor Construction Practice Test
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Health Hazards and Hygiene 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 Health Hazards and Hygiene flashcards as text

  1. Under the OSHA Hazard Communication Standard, what must a Safety Data Sheet (SDS) Section 8 specifically contain?

    Answer: Exposure limits and engineering controls

    SDS Section 8 (Exposure Controls/Personal Protection) lists occupational exposure limits, engineering controls, and required PPE.

  2. A construction site is near a former dry-cleaning facility. Workers should be most concerned about exposure to which contaminant in soil and groundwater?

    Answer: Tetrachloroethylene (PCE/PERC)

    Dry-cleaning facilities historically used tetrachloroethylene (perchloroethylene), a chlorinated solvent that persists in soil and groundwater and is a probable human carcinogen.

  3. What is the purpose of biological monitoring in occupational health programs on construction sites?

    Answer: To measure the actual amount of a hazardous substance absorbed into a worker's body

    Biological monitoring measures chemicals or their metabolites in blood, urine, or breath to assess actual worker body burden regardless of the route of entry.

  4. Which heat illness requires immediate emergency medical response and is characterized by hot, dry or moist skin, confusion, and loss of consciousness?

    Answer: Heat stroke

    Heat stroke is a life-threatening emergency where the body's thermoregulation fails, causing core temperature to rise dangerously and affecting brain function.

  5. When must a construction employer provide a medical examination under OSHA's lead standard (29 CFR 1926.62)?

    Answer: When a worker is exposed above the action level of 30 µg/m³ for more than 30 days per year

    Medical surveillance under the OSHA lead standard is triggered when workers are exposed above the action level (30 µg/m³ as an 8-hr TWA) for more than 30 days per year.

  6. What is the correct order of the hierarchy of controls for managing occupational health hazards on a construction site?

    Answer: Elimination → Substitution → Engineering → Administrative → PPE

    The hierarchy places elimination first as most effective, followed by substitution, engineering controls, administrative controls, and PPE as the last resort.

  7. A worker enters a confined space and immediately collapses. Other workers rush in to help but also collapse. What is the most likely hazard?

    Answer: Oxygen-deficient atmosphere

    An oxygen-deficient atmosphere (below 19.5% O₂) causes rapid incapacitation, and rescuers who enter without supplied air become victims themselves.