Crane rigging formulas6/15/2023 New equipment can also be proof tested to check that the quality of construction meets operational standards. ASME standards dictate that lifting equipment that has been fabricated, altered or repaired should be properly load tested and inspected. Proof load testing is required by OSHA and other agencies. The test will ensure the components exceed the maximum allowable working load (MAWL) on the material rating. Barnhart has many tools and capabilities to meet the load requirements and accuracy of any proof load test. In most cases, a load that is 1.1 to 1.5 times the designated load is used. The load test procedure is mostly performed on a static pull test. Regardless of the type of testing, it should be regularly performed to ensure a component performs correctly and safely throughout its operational cycle. Barnhart can perform either a tension pull test or compression load test, which is often used on jacks, gantries, etc. Proof testing certifies lifting and rigging components can withstand the demands of a load without yielding or failing. It helps affirm the stated working capacity of lifting equipment or rigging. Proof load testing is a critical function that ensures the safety of components, and most importantly, people.
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