During an annual inspection or after a component replacement, slings must be tested to what percent of their rated load?

During an annual inspection or after a component replacement, slings must be tested to what percent of their rated load?

• A. 50 percent of rated load
• B. 100 percent of rated load
• C. 150 percent of rated load
• D. 200 percent of rated load

Answer: (B)

The main idea is to verify that a sling and its attachments can safely carry the full capacity it is rated for after maintenance. During an annual inspection or after a component replacement, applying a load equal to the sling’s rated capacity checks for hidden defects or damage in the sling fibers or hardware that could fail under service. This test confirms the entire assembly—fiber or chain, eyes, hooks, and fittings—retains its strength and can handle the load it’s designed to lift. If any cracking, excessive elongation, or deformation appears, the sling must be removed from service. Testing to a higher load isn’t required and would add risk, while testing at a lower load wouldn’t expose potential failures that could occur at rated service loads.

The main idea is to verify that a sling and its attachments can safely carry the full capacity it is rated for after maintenance. During an annual inspection or after a component replacement, applying a load equal to the sling’s rated capacity checks for hidden defects or damage in the sling fibers or hardware that could fail under service. This test confirms the entire assembly—fiber or chain, eyes, hooks, and fittings—retains its strength and can handle the load it’s designed to lift. If any cracking, excessive elongation, or deformation appears, the sling must be removed from service. Testing to a higher load isn’t required and would add risk, while testing at a lower load wouldn’t expose potential failures that could occur at rated service loads.