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Industrial Hygiene Flashcards

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

Read the first 7 Industrial Hygiene flashcards as text

  1. What type of ventilation system captures contaminants at their source before they can disperse into the workplace air?

    Answer: Local exhaust ventilation (LEV)

    Local exhaust ventilation (LEV) captures contaminants at or near their source through hoods, ducts, and air-cleaning devices, preventing them from dispersing into the work environment.

  2. According to OSHA's Hazard Communication Standard (HazCom), Safety Data Sheets must contain how many sections?

    Answer: 16 sections

    OSHA's HazCom 2012 standard, aligned with the Globally Harmonized System (GHS), requires SDSs to contain exactly 16 standardized sections.

  3. Which type of industrial hygiene monitoring involves placing a sampler directly on the worker to measure the air they actually breathe?

    Answer: Personal sampling

    Personal sampling places collection devices within the worker's breathing zone (a 10-inch sphere around the nose and mouth) to measure actual inhalation exposure.

  4. Silica dust in the respirable fraction is categorized under which class of industrial hygiene particulates?

    Answer: Respirable crystalline silica

    Respirable crystalline silica is a specific regulated class of particulate with OSHA-specific PELs (29 CFR 1910.1053) due to its severe lung disease risk including silicosis and lung cancer.

  5. What does STEL stand for in occupational exposure limits?

    Answer: Short-Term Exposure Limit

    STEL (Short-Term Exposure Limit) is the 15-minute TWA concentration that should not be exceeded during any part of the workday, even if the 8-hour TWA is within limits.

  6. Which biological effect occurs when a toxic substance reacts with DNA and potentially causes cancer?

    Answer: Mutagenesis

    Mutagenesis is the process by which chemicals (mutagens) alter DNA structure; carcinogens are a subset of mutagens that cause mutations leading to cancer.

  7. Which factor does NOT affect the rate of skin absorption of a hazardous chemical in an occupational setting?

    Answer: The color of the worker's personal protective equipment

    The color of PPE has no bearing on dermal absorption rates; relevant factors include skin condition, chemical properties, and environmental conditions that affect skin permeability.