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Certified Safety Professional (CSP) Comprehensive Flashcards

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

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  1. What does the term 'IDLH' stand for in industrial hygiene and what is its primary purpose?

    Answer: Immediately Dangerous to Life or Health; defines concentrations requiring SCBA or equivalent

    IDLH (Immediately Dangerous to Life or Health) represents the maximum concentration from which a worker could escape within 30 minutes without irreversible health effects, and requires supplied-air respirators.

  2. Under NFPA 70E, electrical work requiring an energized electrical work permit typically involves circuits operating above what voltage threshold when exposed energized conductors are within the restricted approach boundary?

    Answer: 50 volts

    NFPA 70E applies shock protection requirements beginning at 50 volts and above, where the risk of electric shock and arc flash becomes significant.

  3. Which of the following best describes the 'Swiss Cheese Model' of accident causation?

    Answer: Accidents occur when holes in multiple defensive layers align, allowing a hazard to cause harm

    James Reason's Swiss Cheese Model depicts safety defenses as slices with holes; accidents occur when holes in multiple layers align to create an unobstructed path to harm.

  4. A worker is exposed to three chemicals simultaneously: Chemical A at 50% of its PEL, Chemical B at 30% of its PEL, and Chemical C at 40% of its PEL. Using the additive mixture formula, is the combined exposure acceptable?

    Answer: No, because the sum of fractions (1.2) exceeds 1.0

    For additive mixtures, the sum of fractions (0.50 + 0.30 + 0.40 = 1.20) must not exceed 1.0; this exposure exceeds the combined limit.

  5. Under OSHA 29 CFR 1910.147 (Lockout/Tagout), which employees must receive training when LOTO procedures are implemented?

    Answer: Both authorized employees and affected employees

    OSHA 1910.147 requires training for both authorized employees (who apply LOTO devices) and affected employees (who operate or work in areas where LOTO is used).

  6. In ergonomics, which factor is NOT one of the primary risk factors for work-related musculoskeletal disorders (WMSDs) as identified by OSHA?

    Answer: Worker age

    OSHA identifies repetition, awkward postures, forceful exertions, vibration, and contact stress as primary WMSD risk factors; worker age is a personal characteristic, not a primary occupational risk factor.

  7. Which fire class designation applies to fires involving energized electrical equipment?

    Answer: Class C

    Class C fires involve energized electrical equipment and require non-conductive extinguishing agents such as CO2 or dry chemical.