Practice Test GeeksCHST - Construction Health and Safety Technician Practice Test
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Health Hazards and PPE Flashcards

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

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  1. A worker is sandblasting a structure coated with lead paint. Which combination of respiratory protection is MOST appropriate?

    Answer: Supplied-air respirator (SAR) in pressure-demand mode

    Supplied-air respirators in pressure-demand mode provide the highest protection factor required for abrasive blasting operations involving lead-containing coatings.

  2. According to OSHA's heat illness prevention standard, which environmental condition triggers mandatory acclimatization protocols for new workers?

    Answer: Heat index above 91°F (33°C)

    OSHA guidance recommends acclimatization protocols when the heat index exceeds 91°F, with new workers limited to 20% of normal workload on day one.

  3. Which type of hearing protection provides the highest Noise Reduction Rating (NRR) typically available for construction workers?

    Answer: Foam earplugs with NRR 33

    Foam earplugs have the highest NRR ratings available (up to 33 dB) among common hearing protection devices.

  4. A construction worker develops redness, itching, and blistering after contact with uncured epoxy resin. This reaction is BEST classified as:

    Answer: Allergic contact dermatitis

    Epoxy resin reactions that involve immune sensitization and occur after repeated exposures are classified as allergic contact dermatitis.

  5. What is the OSHA permissible exposure limit (PEL) for respirable crystalline silica in construction?

    Answer: 0.025 mg/m³ as an 8-hour TWA

    OSHA's silica standard for construction (29 CFR 1926.1153) sets the PEL at 50 micrograms per cubic meter (0.025 mg/m³ respirable) as an 8-hour TWA.

  6. When inspecting a full-body harness after a fall arrest event, the CORRECT action is:

    Answer: Remove from service immediately and destroy or mark unusable

    Any fall arrest equipment subjected to a fall event must be immediately removed from service and destroyed or clearly marked as unusable, regardless of visible damage.

  7. A contractor is working in a confined space with an oxygen-deficient atmosphere. Which of the following oxygen concentrations is defined by OSHA as immediately dangerous to life or health (IDLH)?

    Answer: Below 16%

    OSHA defines an IDLH atmosphere for oxygen deficiency as below 16%, while below 19.5% is considered oxygen-deficient requiring continuous monitoring.