GB/T 5972-2016 in English

This standard is equivalent to ISO 4309:2010 and is applicable to the full life cycle management of wire ropes for various types of cranes and electric hoists. Compared with the 2009 version, the main technical changes include: adding applicable clauses for offshore cranes, refining the scrapping criteria for multi-layer winding cross-areas, and introducing a comprehensive impact assessment method.

22mm 6×36WS-IWRC wire rope was used in the port gantry crane for 12 months:

• 7 broken wires were found in the 6d length of the crossing area (reaching 70% of the scrap benchmark)
• The diameter was reduced from 22.6mm to 21.8mm (reduced by 3.6%)
• The comprehensive evaluation method in Appendix F was used to determine that it should be replaced within a time limit

The new standard highlights three major innovations:

1. Introduction of the Wire Rope Category Number (RCN) system (Appendix G) to achieve digital management of structural characteristics
2. Establishment of special scrapping criteria for cross-overlapping areas to solve the pain point of multi-layer winding
3. Development of a comprehensive impact assessment method (Appendix F) to support multi-factor coupling state determination

Enterprises should establish a three-level management system:

It is recommended to use electromagnetic detectors and wire rope lubrication automatic systems to improve inspection accuracy.