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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 maximum allowable side pull angle for a standard single-part wire rope sling lift?

    Answer: 5 degrees

    ASME B30.9 recommends keeping side pull to a minimum; crane manufacturers typically prohibit side loading beyond 5 degrees because it induces lateral boom stress.

  2. A synthetic web sling must be removed from service if it shows which of the following defects?

    Answer: Missing or illegible load tag

    ASME B30.9 requires removal from service of any sling with a missing or illegible identification tag because rated capacity cannot be verified.

  3. Which rigging configuration provides the highest vertical load capacity for a given sling rated capacity?

    Answer: Basket hitch with both legs vertical

    A basket hitch with both legs vertical doubles the effective load capacity compared to a single vertical hitch, and is more efficient than angled bridles.

  4. What action must be taken before working on or near a crane's electrical systems?

    Answer: Apply lockout/tagout procedures

    OSHA's lockout/tagout standard (29 CFR 1910.147) requires energy isolation and lockout before any maintenance on electrically powered crane systems.

  5. How should a tag line be used during a crane lift?

    Answer: To control load rotation and swing without workers pulling against the crane

    Tag lines guide load orientation and prevent uncontrolled spinning or swinging; workers must never use them to bear load weight or fight the crane.

  6. Which condition requires crane operations to be suspended immediately?

    Answer: Any lightning in the area or wind speed exceeding manufacturer's rated limit

    Lightning poses an immediate electrocution risk and wind beyond the manufacturer's rated limit makes the crane structurally unsafe — both require immediate shutdown.

  7. Under OSHA 29 CFR 1926.1427, crane operators must be qualified by which method?

    Answer: Certification by an accredited crane operator testing organization, employer qualification, or military training

    OSHA 1926.1427 allows operator qualification through third-party certification (e.g., NCCCO), employer-based qualification program, or equivalent military training.