Why is proof load testing required?

Proof load testing verifies that lifting equipment can safely operate under controlled overload conditions as required by Class and international regulations.

What standards apply to lifting equipment?

Relevant standards include ILO Convention 152, SOLAS requirements, Class rules, and applicable flag state regulations.

How does NDT support crane inspections?

Non-Destructive Testing (NDT) detects hidden cracks, fatigue, and structural weaknesses in critical welded and load-bearing areas.

What is inspected in loose gear certification?

Loose gear such as shackles, chains, slings, and lifting accessories are inspected for certification validity, wear limits, and safe operational condition.

Lifting Appliances Load Test Case Study | Crane & Equipment Certification

Q: What is included in a lifting appliance inspection?

The inspection covers cranes, derricks, wire ropes, hooks, sheaves, and safety systems to verify structural integrity and operational safety.

Case study on lifting appliances load testing and inspection for cranes and lifting equipment in compliance with maritime regulations.

A thorough examination and dynamic load testing were conducted to certify deck cranes for safe cargo operations.

Location: Shanghai, China
Service: Lifting Appliance Inspection
Client Type: Shipowner / Heavy Lift Operator

Challenge

● A vessel required re-certification of its 40-ton cranes after a period of layup to meet ILO 152 requirements.

Attendance

● PAMS Pacific Admiralty Maritime Services performed Non-Destructive Testing (NDT) on critical weld joints followed by a 110% dynamic load test using water bags.

Findings

● We identified a hairline crack in a sheave pin and excessive wire rope wear that were not visible during standard daily checks.

Outcome

● With the faulty components replaced and the load test passed, the vessel was cleared for heavy cargo operations without safety concerns.

Frequently Asked Questions: Lifting Appliances & Load Testing

What is included in a lifting appliance inspection?

Our technical survey includes a thorough visual and structural assessment of shipboard cranes, derricks, and provision cranes. We inspect wire ropes, sheaves, hooks, and safety limit switches to ensure total operational integrity.

Why is proof load testing necessary?

Proof load testing verifies that the lifting gear can safely handle its Safe Working Load (SWL) plus a specified percentage of overload. This is a mandatory requirement under international regulations (such as ILO 152) and Class standards following major repairs or at fixed intervals.

Does PAMS inspect loose gear and tackle?

Yes. We perform inspections and verify the register of "loose gear," including shackles, chains, slings, and spreader beams. We ensure all items are properly color-coded, certified, and within their allowable wear limits.

How does NDT support lifting gear surveys?

Non-Destructive Testing (NDT), such as Ultrasonic or Magnetic Particle Testing, allows us to detect subsurface cracks or fatigue in critical welds and high-stress points of the crane structure that are invisible to the naked eye.

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About the Author

Gregory Apostologlou is the Managing Director of PAMS Pacific Admiralty Maritime Services. With more than 26 years of international maritime experience as a Marine Technical Superintendent and authorized PHRS Surveyor, he specializes in marine surveying, FPSO/SPM technical engineering, marine risk assessment, vessel inspections, and maritime regulatory compliance.