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Occupational Health And Safety Flashcards

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

Read the first 7 Occupational Health And Safety flashcards as text

  1. During a chemical emergency response, an incident commander notices a greenish-yellow vapor cloud. Which chemical is MOST likely responsible?

    Answer: Chlorine gas

    Chlorine gas has a distinctive greenish-yellow color and a sharp, bleach-like odor, making visual identification possible during releases.

  2. Which route of chemical exposure is responsible for the MAJORITY of occupational illness cases involving volatile organic compounds (VOCs)?

    Answer: Inhalation

    Inhalation is the primary route of exposure for VOCs in occupational settings because volatile chemicals readily become airborne and are inhaled during breathing.

  3. What is the purpose of biological monitoring in an occupational health program?

    Answer: To measure the actual internal dose of a toxicant or its metabolites in workers' blood, urine, or exhaled air

    Biological monitoring measures internal body burden via biomarkers in biological specimens, reflecting actual absorbed dose from all exposure routes combined.

  4. Under OSHA's noise standard (29 CFR 1910.95), at what 8-hour TWA noise level must employers implement a hearing conservation program?

    Answer: 85 dBA

    An action level of 85 dBA (8-hr TWA) triggers the hearing conservation program, including monitoring, audiometric testing, training, and hearing protector provision.

  5. Which of the following best describes the difference between acute and chronic toxicity?

    Answer: Acute toxicity results from a single or short-term exposure; chronic toxicity results from repeated long-term exposure

    Acute toxicity involves harmful effects from a single or short-term high-dose exposure, while chronic toxicity involves effects from repeated or continuous lower-dose exposures over time.

  6. When two chemicals together produce a combined effect greater than the sum of their individual effects, this interaction is called:

    Answer: Synergistic toxicity

    Synergistic toxicity occurs when combined exposure produces an effect greater than the arithmetic sum (1+1>2), such as asbestos and cigarette smoking multiplicatively increasing lung cancer risk.

  7. What is the minimum required initial HAZWOPER training for workers at uncontrolled hazardous waste cleanup sites who may be exposed to hazardous substances?

    Answer: 40 hours

    OSHA 29 CFR 1910.120(e) requires 40 hours of initial off-site training plus 3 days of supervised field experience for general site workers at uncontrolled hazardous waste sites.