What indicators suggest a crane load hook needs replacement?

• A. A hook that has minor rust only
• B. A hook that is slightly shiny
• C. A hook that is heavier than normal
• D. Hook should be free of cracks, deformities, and excessive wear; damaged hooks must be removed; indicators include throat opening increase, deformation, or neck cracks

Answer: (D)

Crane load hooks must stay in sound condition because any cracks, deformation, or excessive wear can reduce their strength and lead to a sudden hook failure during lifting. The strongest reason this option is correct is that it lists concrete damage indicators that mean the hook has been compromised: an increased throat opening from wear or deformation means the hook no longer seats the load properly, neck cracks indicate fatigue in the hook’s neck region, and any deformation shows the metal has yielded or been stressed beyond its limits. When these signs are present, the hook should be removed from service and replaced to prevent a lifting accident.

Surface rust or a slightly shiny surface don’t reliably indicate hook integrity, and a hook appearing heavier than normal doesn’t reflect a true defect in the hook’s strength or geometry.