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Rigging and Hoisting Operations Flashcards

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

Read the first 7 Rigging and Hoisting Operations flashcards as text

  1. When using a below-the-hook lifting device such as a pipe lifting beam, what document must be available on site during the lift?

    Answer: The manufacturer's load rating chart and instructions

    ASME B30.20 requires that the manufacturer's load rating chart and operating instructions be available for below-the-hook lifting devices.

  2. A pipefitter needs to rig a 10,000 lb pipe section using a basket hitch. If the sling angle (from horizontal) is 45 degrees, what is the approximate tension in each sling leg?

    Answer: 7,071 lb

    At 45 degrees from horizontal, each leg tension = (load/2) ÷ sin(45°) = 5,000 ÷ 0.707 ≈ 7,071 lb.

  3. What is the primary purpose of a swivel hoist ring compared to a standard eyebolt for rigging?

    Answer: It allows 360-degree rotation and angular loading without reducing rated capacity

    Swivel hoist rings rotate 360 degrees and pivot to accommodate angular loading without the capacity derating required for standard eyebolts.

  4. During a critical pipe lift, the rigger notices the crane load line is not plumb over the load's center of gravity. What is the correct action?

    Answer: Reposition the crane or adjust rigging until the load line is plumb

    The load line must be plumb over the center of gravity before lifting to prevent uncontrolled swinging or side loading the crane.

  5. What is the function of a load moment indicator (LMI) on a mobile crane?

    Answer: It monitors boom angle, radius, and load to warn of approaching the crane's capacity

    An LMI continuously monitors boom angle, radius, and load weight to provide warnings before the crane's rated capacity is exceeded.

  6. Which OSHA standard primarily governs rigging equipment used for material handling in general industry?

    Answer: 29 CFR 1910.184

    29 CFR 1910.184 is the OSHA standard that governs slings used in hoisting operations in general industry settings.

  7. When inspecting a synthetic web sling before use, which defect is an immediate disqualifier?

    Answer: Any acid or caustic burns

    Any acid or caustic burns on a synthetic web sling require immediate removal from service as chemical damage compromises the entire sling.