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Chemical Safety & Hazard Communication Flashcards

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

Read the first 7 Chemical Safety & Hazard Communication flashcards as text

  1. What does OSHA's Permissible Exposure Limit (PEL) represent for airborne chemical hazards?

    Answer: The maximum airborne concentration allowable during an 8-hour workday time-weighted average

    PELs are legally enforceable maximum airborne concentrations expressed as 8-hour time-weighted averages that workers may be exposed to without expected adverse health effects.

  2. The NIOSH Immediately Dangerous to Life or Health (IDLH) concentration is defined as the maximum level from which a healthy worker could escape within how many minutes without irreversible health effects?

    Answer: 30 minutes

    IDLH values define the maximum airborne concentration from which a healthy worker could escape within 30 minutes without experiencing irreversible health effects or escape-impairing symptoms.

  3. Which air monitoring method measures average worker exposure over an entire work shift?

    Answer: Time-weighted average (TWA) sampling

    TWA sampling collects samples over the full work shift to calculate average concentrations, which are compared against 8-hour PELs or ACGIH TLVs.

  4. What is the FIRST action a safety official should take when discovering a chemical spill?

    Answer: Evacuate and secure the area, then identify the chemical

    Personnel safety is the top priority; evacuating and securing the area protects bystanders, and identifying the chemical determines the appropriate and safe response.

  5. OSHA's Laboratory Standard (29 CFR 1910.1450) requires laboratories to develop a Chemical Hygiene Plan (CHP) primarily to:

    Answer: Establish procedures protecting workers from health hazards associated with laboratory chemicals

    The CHP is a written program required by OSHA's Laboratory Standard that establishes policies, procedures, and responsibilities to protect laboratory workers from chemical health hazards.

  6. Under OSHA's Process Safety Management (PSM) standard (29 CFR 1910.119), what determines whether a facility must comply with PSM requirements for a highly hazardous chemical?

    Answer: The threshold quantity is chemical-specific as listed in Appendix A of the standard

    PSM threshold quantities vary by chemical and are listed in 29 CFR 1910.119 Appendix A, with each substance assigned a specific quantity based on its hazard potential.

  7. Secondary containment systems for chemical storage are primarily designed to:

    Answer: Contain spills and leaks to protect workers and prevent environmental contamination

    Secondary containment systems such as berms, dikes, and containment pallets capture spills and leaks before they spread, protecting both workers and the environment.