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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. A chemical has a Threshold Limit Value-Ceiling (TLV-C) designation. What does this mean for worker exposure?

    Answer: Exposure must not exceed this concentration at any time, even instantaneously

    A TLV-C is an absolute ceiling concentration that must never be exceeded at any point during the workday, regardless of duration.

  2. Which OSHA standard requires employers to develop a written Hazardous Waste Operations and Emergency Response (HAZWOPER) plan for uncontrolled hazardous waste sites?

    Answer: 29 CFR 1910.120

    29 CFR 1910.120 (HAZWOPER) requires a written safety and health program, medical surveillance, training, and emergency response plans for hazardous waste site workers.

  3. In toxicology, what term describes the dose-response relationship concept that 'the dose makes the poison'?

    Answer: Paracelsus principle

    The Paracelsus principle — 'sola dosis facit venenum' (only the dose makes a poison) — is the foundational concept that all substances can be toxic at sufficient doses.

  4. Which personal protective equipment level provides the highest level of skin, respiratory, and eye protection under EPA guidelines?

    Answer: Level A

    Level A PPE includes a fully encapsulating chemical-protective suit with SCBA, offering the maximum protection against vapors, gases, and skin absorption hazards.

  5. Under OSHA's respiratory protection standard (29 CFR 1910.134), before an employee is fit-tested for a tight-fitting respirator, what must be completed first?

    Answer: A medical evaluation by a physician or licensed health professional

    OSHA requires medical evaluation before fit testing to ensure the employee is physically capable of wearing a respirator without adverse health effects.

  6. What does the term 'immediately dangerous to life or health' (IDLH) concentration represent?

    Answer: The maximum concentration from which a worker could escape within 30 minutes without irreversible harm

    IDLH is defined by NIOSH as the maximum concentration from which a worker can escape within 30 minutes without escape-impairing symptoms or irreversible health effects.

  7. A company uses benzene as a solvent. Under OSHA 29 CFR 1910.1028, what is the action level for benzene that triggers medical surveillance?

    Answer: 0.5 ppm as an 8-hour TWA

    OSHA's benzene standard sets an action level of 0.5 ppm (8-hr TWA); workers exposed at or above this trigger medical surveillance requirements.