When using choker hitches, do not force the eye down towards the load once tension is applied. Wire rope damage is the invariable result (fig. 1-19).
Whenever two or more wire rope eyes must be placed over a hook, install a shackle on the hook with the shackle pin resting in the hook and hook the wire rope eyes to the shackle. This will prevent the spread of the sling legs from opening up the hook and also prevent the eyes from damaging each other when under load (fig. 1-20).
The following procedures and precautions should be observed whenever loads are to be handled:
Rig all loads to prevent the dislodgement of any part Suspended loads should be securely slung and properly balanced before they are set in motion.
Keep the load under control at all times. Where necessary by the rotation, use one or more guide wire ropes or tag lines to prevent the rotation or uncontrolled motion (fig. 1-21).
Land all loads safely and block them properly before unhooking and unslinging them (fig. 1-22).
Never wrap the hoist wire rope around the load Attach the load to the hook by slings or other rigging devices that are adequate for the load being lifted.
Bring the load line over the center of gravity of load before starting the lift.
Load and secure materials and equipment being hoisted to prevent any movement that could create a hazard in transit.
Figure 1-19. - Proper position of choker hitches for lifting.Continue Reading