National Commission for the Certification of Crane Operators (NCCCO) Core Practice Test

Question: 1 / 400

What is the minimum distance the flange of the drum must extend over the top layer when hoisting a personnel platform?

1 inch

1/2 inch

The minimum distance that the flange of the drum must extend over the top layer when hoisting a personnel platform is crucial for ensuring safe operations. The correct answer indicates that the flange should extend at least 1/2 inch over the top layer. This requirement is in place to help prevent the rope from slipping off the drum during the lifting operation, which could pose serious safety hazards. The flange's design helps ensure that the lifting cable is properly contained and secured, reducing the risk of accidents or equipment failure.

This specification is part of safety standards established to protect workers inside the personnel platform. Adequately extending the flange creates a reliable physical barrier that contributes to the secure lifting and lowering of personnel, ensuring they can safely perform their tasks at height.

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1.5 inches

2 inches

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