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Detection of wire rope deterioration

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We recently found out that the crane wires could deteriorate inside including broken strands but this is not always possible to detect during the routine inspection during operation because outside walls could be perfectly fine. Does anyone else have a similar experience , have you come across any clever gadget or method that can assist in detecting hidden deterioration as such.

Thank you

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Asked on February 20, 2016 3:29 pm
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We routinely inspect loading and unloading equipment at bulk terminals. This includes wire rope inspections. When we conduct these inspections, we do a visual inspection of the wire rope exterior and also use Ultrasonic Testing equipment to detect subsurface defects. Equipment and expertise is available for this type of inspection in North America, I haven’t researched this in other parts of the world. Feel free to contact me (Steve Yee) at syee@cwaengineers.com and perhaps I can help you source out appropriate equipment and expertise for interpreting results vs appropriate codes etc.

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Answered on February 22, 2016 9:26 pm
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Your first indication will be some narrowing of the diameter or distortion.

Depending on the application we now replace wires on a tonnage basis. The problem we experienced was with the sockets on the Bulk Terminal.

With Boom wires that are rarely stressed we will replace after 10 years. There are no wires on cranes at Bristol that are over 10years old.

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Answered on February 21, 2016 1:54 pm