Co-Authored By:
Replace rope if wear on individual wires exceeds 1/3 of the diameter. Replace 6-strand rope if stretch exceeds 6 inches per 100 feet. Difficult to detect because it's inside the rope.
Similarly one may ask, how many wires can be broken in a wire rope?
In running wire ropes: Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay, where a rope lay is the length along the rope in which one strand makes a complete revolution around the rope.
Hereof, when Must running ropes be taken out of service?
Wire rope must be taken out of service when any of the following conditions exist: o In running ropes - six randomly distributed broken wires in one lay or three broken wires in one strand in one lay. o Wear of one-third the original diameter of outside individual wires.
- Use the "rag-and-visual" method to check for external damage. Grab the rope lightly and with a rag or cotton cloth, move the rag slowly along the wire.
- Measure the rope diameter.
- Visually check for abrasions, corrosion, pitting, and lubrication inside the rope.