Rigging and lifting is a common to many operations in construction, oil field and many other industries. At first glance, rigging seems to be a simple activity that anyone can do, but this is not the case. Carelessness during rigging operations could mean losing your fingers in a pinch point. Rigging incorrectly could mean dropping a heavy load, endangering those around you. If you are using equipment to lift an object, it means this object is HEAVY! If the weight of your load is not controlled, it has the capacity to maim and kill. Only trained, experienced workers should conduct rigging operations and rigging safety should be an emphasis when planning operations.
Select & Inspect Rigging Devices
OSHA requires all straps, slings, chains and wire ropes used as lifting devices to have tag with the rated lifting capacity in each configuration. Inspect your rigging to ensure the device you use is in good condition (free from damage) and has the needed capacity. Also inspect slings and straps for tears and inspect wire ropes for broken strands. Never use damaged rigging for lifting operations. If your equipment is damaged, it may no longer have the capacity listed on the tag.
Never use wet straps or slings! Straps and slings use friction between the individual strands in the lifting device to maintain their strength. If the strap or sling is wet, this friction is substantially reduced and the device will not function as intended. Wet straps and slings have only a fraction of their rated lifting capacity. Experienced riggers will have noticed how much more a wet sling stretches when lifting a load. Hence, always ensure your rigging equipment is dry and in optimal condition to maintain good rigging safety standards
Rig Shackles and Hooks Correctly
Shackles and hooks also have rated load capacities. Check that hooks and shackles have enough capacity before starting your operation. These devices are only designed to carry loads in the correct configuration. Consult the owner’s manual for the lifting device you are using to ensure it is rigged correctly. The diagram below is an example of how to utilize shackles properly. Workers should receive formal training on how to rig shackles and hooks to ensure they are knowledgeable about rigging safety.
Know Your Signals
Crews that are conducting rigging and lifting operations should be trained on how to signal a crane. Before commencing operations, designate one person to signal the operator. Any experienced operator has encountered the frustrating experience of having two or more people sending contradicting signals! The signalman is also responsible for making sure all crew members are ready and the load is ready to be moved. Ideally, all crew members should be a safe distance from the load. At times it is necessary for the crew members to handle the load during the operation. If this is the case, crew members should have their hands and feet clear of pinch points before the load is moved.
Handling the Load
If controlling the load during the operation is necessary, use taglines whenever possible. When using your hands to handle a suspended load, keep it close to the ground. Never put any part of your body between a load and the ground or any other object. Always lift and set down a load slowly. Heavy loads can shift without warning when lifted or set down. By moving a load slowly, you can keep the object from shifting suddenly, giving the ground crew more time to react and to signal the operator to stop.
The Benefits of Rigging Safety
Rigging safety isn’t just about compliance; it’s about safeguarding lives and ensuring the success of your construction projects. Keep your team safe and protect your equipment by educating workers about the importance of rigging safety.
Other Rigging Safety Resources:
Slings & Straps for Lifting: Overview of types of slings, applications and safety
Shackle Safety: Choosing the correct shackle for your operation