Shackles

Shackles are the primary connecting link in all manner of rigging systems, from boats and ships to industrial crane rigging, as they allow different rigging subsets to be connected or disconnected quickly. A shackle is also the similarly shaped piece of metal used with a locking mechanism in padlocks.

Shackles and hooks are components of rigging used to attach loads and slings to lifting devices. These items along with ropes, chains, and slings make up the “rigging gear.”

Potential Hazards:

Failure of shackles or hooks while loads are being lifted or moved, may cause serious injuries.

Requirements and Example Solutions:

• The safe working load of shackles and hooks must not be exceeded. [29 CFR 1915.113(a)(1)]
• Hooks without applicable manufacturer’s recommendations available, must be tested to twice the intended safe working load. Documentation must be maintained. [29 CFR 1915.113(b)(1)]
• Loads must be applied to the throat of the hook. [29 CFR 1915.113(b)(2)]
• Hooks must be inspected periodically. [29 CFR 1915.113(b)(3)]
• Bent or sprung hooks must not be used. [29 CFR 1915.113(b)(3)]