At what percentage of increase in length should a chain sling be removed from service?

A chain sling should be removed from service when it has experienced a percentage increase in length that indicates it has undergone significant wear or stretching that compromises its integrity and safety. A 5% increase in length is the threshold established in safety regulations and guidelines for rigging, signaling that the sling has deformed to the point where its load-bearing capacity may be compromised. This criterion helps ensure that the sling can provide the necessary safety and reliability required during lifting operations.

Choosing to remove the sling at this percentage is essential because extended usage beyond this limit may lead to failure under load, posing serious risks to personnel and equipment. Keeping safety standards in mind, it is necessary to consider the structural integrity of the sling and take action proactively to prevent accidents.