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Overhead and Gantry Crane Operations Flashcards

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

Read the first 6 Overhead and Gantry Crane Operations flashcards as text

  1. According to OSHA 1910.179(b)(2), what information must be legibly marked on each side of an overhead or gantry crane?

    Answer: The maximum rated load capacity

    OSHA 1910.179(b)(2) requires that the rated load be legibly marked on each side of every overhead and gantry crane. This ensures operators and riggers can immediately identify the crane's capacity limit without consulting documentation.

  2. What is the primary purpose of a bridge travel end limit switch on an overhead crane?

    Answer: To prevent the crane bridge from traveling past the end of the runway

    Bridge travel end limit switches cut power to the bridge drive motor before the crane can overrun the end of the runway beam. They are a last-resort safety backup to operator awareness, not a positioning device.

  3. Per ASME B30.2, a periodic inspection of an overhead crane in regular service must be conducted at intervals not exceeding:

    Answer: 1 year

    ASME B30.2 requires periodic inspections at intervals not exceeding one year for cranes in regular service. Frequent inspections (daily/weekly) are also required, but the formal periodic inspection covering all structural, mechanical, and electrical components must occur annually.

  4. Which ASME standard specifically governs below-the-hook lifting devices used with overhead cranes?

    Answer: ASME B30.20

    ASME B30.20 covers below-the-hook lifting devices such as spreader bars, lifting beams, and vacuum lifters. B30.5 governs mobile cranes, B30.9 covers slings, and B30.26 covers rigging hardware.

  5. An overhead crane operator inadvertently activates the upper limit switch during hoisting. What is the correct immediate response?

    Answer: Lower the hook immediately, and treat the upper limit switch as a safety backup rather than a routine stop

    The upper limit switch (ULS) is a last-resort safety device, not a normal operating stop. The correct response is to immediately lower the hook. Using the ULS routinely as a stop point causes premature wear and leaves no backup if two-blocking occurs.

  6. After a major repair to a load-carrying structural member of an overhead crane, what action does ASME B30.2 require before the crane is returned to service?

    Answer: A load test at 100% to 125% of rated capacity

    ASME B30.2 requires a load test — typically at 100% to 125% of rated capacity — after major repairs to structural components. This verifies that the repaired crane can safely handle its rated load before personnel are exposed to suspended loads beneath it.