Throw the chain

"Throw the Chain": A Crucial Step in Chain-Fall Rigging

In the world of rigging, "throwing the chain" is a critical maneuver that ensures efficient and secure connections. This technique is employed in chain-fall systems, where a chain is used to lift and lower heavy objects, typically employed in construction and industrial settings.

Here's a step-by-step breakdown of the "throw the chain" process:

1. The Stab: The first step involves "stabbing" the chain, which means connecting the hook of the chain fall to the load. This process involves carefully inserting the hook into the lifting point, ensuring a secure connection.

2. The Chain's Position: The chain initially rests within the box end of the joint on the chain fall, which is the section closer to the hook. This is where the initial tension is applied during the lifting operation.

3. The "Throw": The "throw the chain" action comes into play after the load has been initially lifted and the chain is fully engaged. A rope, connected to the cat-head (a rotating drum used for lifting), is attached to the chain. By pulling the rope, the chain is guided from the box end of the joint towards the pin end (the section furthest from the hook).

4. The Benefit: This seemingly simple maneuver provides several crucial advantages:

• Reduced Strain: Shifting the chain from the box end to the pin end allows for a more even distribution of the load. This reduces stress on the joint and prevents premature wear and tear.
• Improved Grip: The chain's position on the pin end ensures a tighter grip on the lifting point, enhancing the security of the connection.
• Increased Efficiency: With the chain positioned at the pin end, the chain fall can operate at its optimal lifting capacity. This translates to quicker and more efficient lifting operations.

5. Safety Considerations: While "throwing the chain" is a common practice, safety remains paramount. It's crucial to ensure that:

• The chain is properly secured: The chain should be securely attached to the cat-head and the load should be stabilized before the "throw" is attempted.
• Clear communication: Proper communication between the crew members involved is essential to avoid accidents during the maneuver.
• Experienced operators: Only trained and experienced operators should handle the chain fall and perform this critical step.

In Conclusion: The seemingly simple act of "throwing the chain" is a crucial step in chain-fall rigging, contributing to a secure, efficient, and safe lifting operation. Understanding this process and prioritizing safety is paramount in any project utilizing chain-fall systems.