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Industrial Hygiene & Exposure Monitoring Flashcards

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

Read the first 6 Industrial Hygiene & Exposure Monitoring flashcards as text

  1. Under OSHA's Respiratory Protection standard (29 CFR 1910.134), a quantitative fit test uses which measurement to determine respirator fit?

    Answer: Fit factor — ratio of particle concentration outside to inside the facepiece

    Quantitative fit testing measures the fit factor — the ratio of ambient challenge agent concentration outside the mask to concentration inside — using an instrument such as a PortaCount.

  2. Which class of respirator provides the highest level of respiratory protection and is suitable for IDLH atmospheres?

    Answer: Self-Contained Breathing Apparatus (SCBA)

    SCBA supplies clean air from a portable tank, providing full-face protection independent of the ambient atmosphere, making it required in IDLH conditions.

  3. Heat stress is evaluated using which composite index that accounts for temperature, humidity, and radiant heat?

    Answer: Wet Bulb Globe Temperature (WBGT)

    WBGT combines natural wet bulb, globe (radiant heat), and dry bulb temperatures and is the internationally accepted standard for occupational heat stress assessment.

  4. Ergonomic hazards that can cause musculoskeletal disorders (MSDs) in the workplace include which of the following risk factors?

    Answer: Repetitive motion, awkward postures, and forceful exertions

    MSDs are primarily caused by ergonomic risk factors including repetition, awkward postures, forceful exertions, contact stress, vibration, and extreme temperatures.

  5. A chemical is classified as a 'skin sensitizer' under GHS. What does this mean for exposure assessment?

    Answer: Dermal exposure can cause an allergic reaction upon re-exposure even at low concentrations

    Skin sensitizers cause allergic contact dermatitis; once sensitized, a worker can react severely to even trace exposures, making skin contact prevention critical.

  6. Which regulation requires that workers potentially exposed to bloodborne pathogens receive hepatitis B vaccination at the employer's expense?

    Answer: OSHA Bloodborne Pathogens Standard (29 CFR 1910.1030)

    29 CFR 1910.1030 requires employers to offer the hepatitis B vaccine series to all employees with occupational exposure to bloodborne pathogens at no cost to the employee.