Any type of heavy machinery relies on a massive amount of moving parts to keep moving and safe. If one part becomes "weak" the rest of the machinery may be compromised. When it comes to crane operations, rigging can often be that "weak link". How a load is attached to a crane can make the difference between a successful lift and an unfortunate accident. And rigging-related accidents can often be deadly, due to the large and heavy loads that are lifted. A small miscalculation, or a brief moment of inattention, and tragedy could strike. Once a load falls not much can be done to stop it, and there is little time for people to move safely out of the way. A coworker can be injured or killed, and expensive equipment and cargo could be damaged or destroyed or even the crane itself. Our training products on "Rigging Safety" point out to employees that over 90% of rigging-related accidents are caused by human error and that they are the key to preventing these incidents. Topics included in this material are: physical and mental preparation, equipment inspection, hazard assessment, slings and hitches and many more important and informative topics.
CASE HISTORY OF RIGGING ACCIDENT: Worker Killed When Struck by Falling Exhaust Stack Shipyard - workers were using a wheel-mounted crane to reposition two exhaust stacks that had been removed from a vessel. The exhaust stacks were being placed close to each other while they were being prepared for sandblasting and painting. The crane operator placed one exhaust stack on its side and leaned the second stack against it while preparing to move the second stack onto its side. The crane operator then slackened the line so that a rigger could reposition the wire rope. As the rigger approached the second stack, the 3-ton exhaust stack fell over and struck the rigger in the back of the head, killing him instantly. Possible ways to prevent this type of accident: Fully understand the sequence of rigging events. Understand the balance point of material. Ensure the drop position is secure. Ensure the lifted item is chocked, if possible.