What is the maximum permissible elongation before a lifting chain must be condemned?

The maximum permissible elongation before a lifting chain must be condemned is 10%. This standard is set to ensure safety and reliability in lifting operations. Chains endure significant stress during use, and any elongation beyond this limit indicates that the chain has undergone permanent deformation, which compromises its load-bearing capacity.

An elongated chain could break or fail when subjected to loads it previously handled safely, posing serious risks to operators and the loads being lifted. By enforcing the 10% threshold, regulations help ensure that any lifting equipment in use maintains its integrity and remains compliant with safety standards. Regular inspection and adherence to these limits are crucial for preventing accidents and ensuring operational safety in environments where lifting equipment is utilized.