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Mike Parnell Jul 15, 2010 7:38:00 AM < 1 min read

Rigging Quiz: Can you identify 5 hazards in this photo?


Look over the image carefully and identify at least five hazards.
















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  1. Eye bolts are not properly seated.
  2. Eye bolt orientation should be aligned to the hoist hook, not broadside.
  3. Hook loading of sling β€œlegs” is less than 45 deg. from horizontal, resulting in tip loading. (Sling is rigged less than a 90 deg. full included angle.)
  4. There is a dual or compound load at the eye bolts created by the sling’s leg and the horizontal portion. (Similar to the forces experienced by a rigging block.)
  5. An open basket hitch in this application can allow load running or unrestricted movement. (Sling damage can occur, especially friction/heat resulting in a melted sling and dropped load.)

Note: A quick field sketch below offers a long-term alternative.

Answer Key Picture resized 600

Happy trails to my crane and rigging friends,

Mike Parnell, ITI – Field Services

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