A crane hook must be removed from service if it has been opened (throat opening increased) by more than what percentage of its original dimension?

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Multiple choice — select the best answer

A5%
B10%
C15%
D25%

✓ Correct answer: C. 15% ASME B30.10 requires that hooks be removed from service if the throat opening has increased more than 15% from the original dimension. This indicates the hook has been overloaded and deformed beyond safe use.

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Topic: Inspections & Maintenance

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A crane hook must be removed from service if it has been opened (throat opening increased) by more than what percentage of its original dimension?

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