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Workplace Ergonomics & Health Flashcards

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

Read the first 7 Workplace Ergonomics & Health flashcards as text

  1. In NIOSH's revised lifting equation, what does the Recommended Weight Limit (RWL) represent?

    Answer: The weight a healthy worker can lift over an 8-hour shift without elevated risk of low-back injury

    The RWL is the load a healthy worker can lift repeatedly under specified task conditions without substantially increasing the risk of low-back disorder.

  2. What does a Lifting Index (LI) value greater than 3.0 indicate according to NIOSH guidelines?

    Answer: Significant risk; the task should be redesigned immediately

    An LI above 3.0 represents a substantially elevated risk of low-back injury and requires immediate ergonomic redesign of the lifting task.

  3. Which of the following best describes 'contact stress' as an ergonomic risk factor?

    Answer: Pressure on soft tissue from a hard edge or surface during work tasks

    Contact stress occurs when a hard edge (e.g., desk edge, tool handle) presses on soft tissue, restricting blood flow and compressing nerves.

  4. A forklift operator reports lower back pain that worsens during the work shift. Which ergonomic hazard is the PRIMARY contributor?

    Answer: Whole-body vibration (WBV) transmitted through the vehicle seat

    Whole-body vibration from industrial vehicles is a well-established risk factor for lumbar spine disorders among forklift and heavy equipment operators.

  5. When performing a workstation assessment, which tool uses a systematic body-part scoring method to estimate postural risk levels for upper limbs?

    Answer: RULA (Rapid Upper Limb Assessment)

    RULA evaluates postures of the neck, trunk, and upper limbs using scored body-part diagrams to produce an overall risk level.

  6. What is the primary purpose of an anti-fatigue mat in a standing workstation?

    Answer: To reduce static muscle loading in the legs and lower back by encouraging micro-movements

    Anti-fatigue mats reduce discomfort and musculoskeletal fatigue by promoting subtle shifting of weight and stimulating leg muscle contractions.

  7. According to ergonomics best practices, the top of a computer monitor should be positioned at or slightly below which anatomical reference point?

    Answer: Eye level

    Placing the monitor top at eye level minimizes neck flexion and extension, keeping the cervical spine in a neutral position.