Hook are an important part of crane rigging operations. There are many times during crane rigging when hooks are used. These hooks come in a variety of sizes and are used for several purposes. Because of the important work they do, they must be inspected at regular intervals in order to prevent serious accidents and possible injuries. Hooks can, and do, fail! Be sure you inspect the hooks you use before putting them into service.
When considering your crane rigging safety policy as it pertains to hooks, keep the following in mind:
- A safety latch is essential
- Bent hooks must be retired
The crane hook is a sturdy device capable of enduring great stress, but it, too, must be inspected to ensure its safety.
Hooks must have a safety latch or clip. This prevents the hook from twisting out of the ring or another device they are attached to.
If a hook does not have a safety clip or latch, or if the clip is broken, replace the hook or have the safety clip repaired.
Hooks may crack, bend, or distort. A hook opened more than 15 percent of the normal throat opening measured at the narrowest point or twisted more than 10° from the plane of the unbent hook must be removed from service.
Many times, the hook requires non-destructive testing to ensure there are no stress cracks. At times, this test must completed by professional engineers.
Review the hook inspection procedure in place at your facility If you are not sure about any procedure seek guidance from your supervisor before putting the hook into service.
Only those personnel who have been trained to properly inspect crane rigging hooks should be allowed to do so.
Supervisors must ensure that the inspections are carried out at the scheduled time.
The above information comes from BLR’s presentation “Crane Rigging.” For more information on all the training courses BLR has to offer, go to our Crane Rigging page.