What is a common cause of a two-blocking incident?

A two-blocking incident occurs when a hook or block on a crane or hoisting equipment comes into contact with the other block or hook, creating a dangerous situation that can lead to equipment damage or injury. The option of hoisting the load too high is a common cause of two-blocking because when the load is raised excessively, the rigging can become misaligned, leading to the blocks coming into contact with each other. This can happen, especially if the hoist has limited clearance, or if operators are not aware of the limits of their equipment.

This scenario highlights the importance of proper lifting techniques and attention to load heights to prevent such accidents. It emphasizes the need for operators to have a clear understanding of how high they can safely raise a load without risking a two-blocking situation. Additionally, it underscores the necessity of adhering to operational guidelines and safety protocols in crane operations.