INSPECTION AND REMOVAL CRITERIA
ASME B30.10-1 HOOKS
10-1.10.5 Removal Criteria
• Missing or illegible hook manufacturer’s identi cation or secondary manufacturer’s identi cation.
• Missing or illegible rated load identi cation.
• Excessive pitting or corrosion.
• Cracks, nicks, or gouges.
• Wear.
Any wear exceeding 10% (or as recommended by the manufacturer) of the original section dimension of the hook or its load pin.
• Deformation.
Any visibly apparent bend or twist from the plane of the unbent hook.
• Throat Opening.
Any distortion causing an increase in throat opening of 5% not to exceed 1/4’’. (6mm) (Or as recommended by the manufacturer).
• Inability to lock.
any self - locking hook that does not lock.
• Inoperative latch (if required).
Any damaged latch or malfunctioning latch that does not close the hook’s throat.*
• Damaged, missing, or malfunctioning hook attachment and securing means.
• Thread wear, damage, or corrosion.
• Evidence of excessive heat exposure or unauthorized welding.
• Evidence of unauthorized alterations such as drilling, machining, grinding, or other modi cations.
* Neither ASME B30.9 (Slings) nor B30.10 (Hooks) address when hook latches are required on hooks. Other codes and standards may require hook latches. The need for a latch on any hook is a function of the application of the hook, which is beyond the scope of ASME B30.10 (Interpretation: 10-14)
OSHA 1910.184 (f) WIRE ROPE SLINGS
[§1910.184(f)(5)(vi)]
• (vi) Hooks that have been opened more than 15 percent of the normal throat opening measured at the narrowest point or twisted more than 10 degrees from the plane of the unbent hook.
OSHA 1926.251 (f) SHACKLES AND HOOKS
[§1926.251(f)(2)]
• (2) The manufacturer’s recommendations shall be followed in determining the safe working loads of the various sizes and types of speci c and identi able hooks. All hooks for which no applicable manufacturer’s recommendations are available shall be tested to twice the intended safe working load before they are initially put into use. The employer shall maintain a record of the dates and results of such tests.
OSHA 1926.753 (c) HOISTING AND RIGGING
[§1926.753(c)(1)(i)(E)] General
• (E) Hooks and latches for deformation, chemical damage, cracks or wear.
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