What is the removal criteria for regular lay wire rope according to ASME B30.2?

The removal criteria for regular lay wire rope as specified in ASME B30.2 indicates that four broken wires in one strand, within one lay, are sufficient grounds for removing the wire rope from service. This is significant because the structural integrity of the rope can be compromised with such damage, potentially leading to failure when the rope is under load.

The focus on the number of broken wires in a single strand and lay reflects the understanding that damage is most critical when it occurs in the same location of the rope, which can greatly affect that strand's capacity to bear weight. Monitoring these conditions helps to ensure safety during operations, as even a few broken wires can indicate that the wire rope is no longer reliable for lifting tasks. This criterion helps operators identify when maintenance or replacement is necessary to prevent accidents and ensure the continued safety of overhead crane operations.