What is a consequence of failing to prevent two-blocking?

What is a consequence of failing to prevent two-blocking?

• A. Increased speed of the lift.
• B. The load may be dropped or equipment damaged.
• C. Better visibility for the operator.
• D. No change in risk.

Answer: (B)

Two-blocking happens when the hook block contacts the upper block, effectively trapping the load line and creating a sudden, uncontrolled load on the hoist system. If this situation isn’t prevented, the line can experience a shock load, the load can be released or dropped, and critical components such as the rope, sheaves, hoist drum, or other rigging can suffer damage. This is why the direct consequence is that the load may be dropped or equipment damaged. The other options don’t fit: two-blocking doesn’t cause the lift to run faster, it doesn’t improve the operator’s visibility, and it does change risk by introducing a serious hazard rather than eliminating it.

Two-blocking happens when the hook block contacts the upper block, effectively trapping the load line and creating a sudden, uncontrolled load on the hoist system. If this situation isn’t prevented, the line can experience a shock load, the load can be released or dropped, and critical components such as the rope, sheaves, hoist drum, or other rigging can suffer damage. This is why the direct consequence is that the load may be dropped or equipment damaged. The other options don’t fit: two-blocking doesn’t cause the lift to run faster, it doesn’t improve the operator’s visibility, and it does change risk by introducing a serious hazard rather than eliminating it.