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Proof Load Testing

Proof load testing is a critical function that ensures the safety of components, and most importantly, people. It helps affirm the stated working capacity of lifting equipment or rigging. 

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The Importance of Proof Load Testing

Proof load testing is a critical function that ensures the safety of components, and most importantly, people. It helps affirm the stated working capacity of lifting equipment or rigging.

Proof testing certifies lifting and rigging components can withstand the demands of a load without yielding or failing. Barnhart can perform either a tension pull test or compression load test, which is often used on jacks, gantries, etc. Regardless of the type of testing, it should be regularly performed to ensure a component performs correctly and safely throughout its operational cycle.

The load test procedure is mostly performed on a static pull test. In most cases, a load that is 1.1 to 1.5 times the designated load is used. Barnhart has many tools and capabilities to meet the load requirements and accuracy of any proof load test. The test will ensure the components exceed the maximum allowable working load (MAWL) on the material rating.

Proof load testing is required by OSHA and other agencies. ASME standards dictate that lifting equipment that has been fabricated, altered or repaired should be properly load tested and inspected. New equipment can also be proof tested to check that the quality of construction meets operational standards. Some equipment also requires periodic testing every few years.

Regardless of the reason or requirement, Barnhart has the engineers, equipment and facilities to safely perform your proof load test so you have confidence in your machinery and rigging.
 

 

pROOF LOAD TESTING SERVICES

Barnhart has multiple options to proof load test a wide variety of equipment:

  • Overhead cranes
  • Hoists
  • Lifting beams
  • Lifting devices
  • Lifting accessories (shackles, eye bolts, etc.)
  • Slings
  • Spreader bars

Other features:

  • Single source for turnkey testing services - engineering, rigging planning and facilitation
  • Testing available at customer's site or at nearby Barnhart facility
  • Provide results that meet all regulatory obligations
  • Testing within required standards, including:
    • OSHA Section 1926.251(a)(4)
    • ASME B30.9: on lifting slings
    • ASME B30.10-1.7: on hooks
    • ASME B30.16: on overhead hoists
    • ASME B30.17: on overhead and gantry cranes and trolleys
    • ASME B30.20: Below-The-Hook Lifting Devices
    • ASME B30.26: for various lifting accessories: shackles, eyebolts, turnbuckles, links, rings, swivels, and compression hardware
    • NUREG 0612 (ANSI N14.6) – Radioactive Materials – Special Lifting Devices
  • Additionally, Barnhart proof load testing may allow:
    • Equipment owner to troubleshoot rigging practices prior to actual project
    • Opportunity to familiarize field personnel with equipment being tested before actual use

To speak to a Barnhart representative about Proof Load Testing, call 901-302-4065

Optional related services and capabilities

  • Verification of capacity calculations via structural analysis and/or finite element analysis
  • Verification of induced stresses via strain gauges and calibrated load cells
  • Full fabrication facility with staff of CWI Weld Inspectors
  • NDE Testing capabilities including dye penetrant, mag particle, X-ray and ultrasonic testing

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