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CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers Flashcards

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Read the first 7 CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers flashcards as text

  1. What is the minimum proof test load for a new hook before it is placed into service?

    Answer: 125% of rated load

    ASME B30.10 requires hooks to be proof-tested to 125% of their rated load before initial use to verify structural integrity.

  2. When performing a pre-shift inspection, which wire rope condition requires immediate removal from service?

    Answer: A kink in the rope

    A kink permanently damages the rope's internal structure and load distribution, making it an immediate rejection criterion per ASME B30.9.

  3. What is the role of a qualified rigger versus a competent person in crane and rigging operations?

    Answer: A qualified rigger has recognized training/certification; a competent person can identify hazards and has authority to correct them

    OSHA defines a qualified rigger as having demonstrated rigging knowledge/skill, while a competent person has authority to identify and correct hazards — these are distinct roles.

  4. A crane is rated at 40 tons at a 30-foot radius. The same crane at a 50-foot radius will have a rated capacity that is:

    Answer: Lower, because greater radius increases overturning moment

    As radius increases, the overturning moment grows, so crane capacity decreases — this inverse relationship is fundamental to reading load charts.

  5. Which of the following best describes a 'critical lift' under OSHA's crane standard?

    Answer: A lift where the load exceeds 75% of the crane's rated capacity or involves special hazards

    OSHA 1926.1436 defines critical lifts as those exceeding 75% of the crane's rated capacity or involving personnel hoisting, multi-crane picks, or other special conditions.

  6. What must a rigger do if the weight of a load is unknown before a lift?

    Answer: Determine the load weight before the lift proceeds

    OSHA 29 CFR 1926.1412 prohibits lifting loads of unknown weight; the actual weight must be determined before any lift begins.

  7. When two cranes perform a tandem (multi-crane) lift, which statement is correct?

    Answer: A qualified lift director must be designated and each crane's load share must be calculated

    OSHA 1926.1436 requires a qualified lift director for multi-crane operations, and load distribution calculations must be completed to ensure neither crane is overloaded.