Load Testing of Ship Crane Pedestals: Why Is It Necessary?

Pedestal cranes are a type of crane commonly found in all operational activities on ships. They play a crucial role, particularly in loading and unloading operations, so they must always be in top condition.

This ensures that pedestal crane can be used optimally and helps reduce operational risks, such as structural failure and the potential for workplace accidents that can lead to downtime and financial losses.

What Is a Pedestal Crane?

A pedestal crane is a crane with a pedestal structure that is permanently mounted on a ship’s deck. Pedestal crane offer advantages over other types of cranes because they are designed with 360-degree rotation capability and high stability in extreme conditions and weather for long-term maritime operations. Therefore, pedestal crane are commonly found on offshore vessels, logistics vessels, and cargo ships.

Differences from Other Types of Cranes: A Breakdown of the Technical Specifications of Pedestal Cranes

1. Specific Safe Working Load (SWL)

Pedestal crane have a wide range of safe working load (SWL) capacities (ranging from 5 to 150 tons) depending on their design and operating conditions.

2. Drive System (Hydraulic or Electro-Hydraulic)

Most pedestal crane use a hydraulic system or an electro-hydraulic system to generate lifting power.

3. Varied Boom Configurations

Pedestal crane can have various boom configurations, such as fixed boom, knuckle boom, and telescopic boom.

4. Slewing System (360° Rotation)

A pedestal crane is equipped with a slewing system that supports full rotation (360°) and allows the crane to adjust its lifting direction without having to move the unit.

Pedestal Crane Load Testing Process

1. Initial Inspection (Visual & Documentary) includes checking the crane’s physical condition (structure, wire rope, hook, and hydraulic system) as well as certificates and maintenance records.

2. Determination of Testing Methods to identify the test media/load to be used during the testing process, such as water bags, load banks, or counterweights

3. Crane Load Testing is conducted with a specific load (typically 110%–125% of the SWL) to ensure structural performance and strength.

4. Monitoring & Evaluation during testing, particularly regarding structural deflection, crane stability, and the response of the crane’s mechanical system.

5. Documentation & Certification of the test results is recorded and issued by the authorized agency as proof of operational suitability.

It’s Not Just a Formality: Here’s Why Pedestal Cranes Must Undergo Regular Load Testing

Both new pedestal crane and those that have been in operation for a long time must undergo periodic load testing to ensure they perform optimally. This is because new cranes still require performance verification before use, and older cranes experience fatigue due to repeated use.

Without conducting periodic load testing on pedestal crane, the following risks may occur:

1. Structural failures that cause damage to components such as wire ropes or slewing systems

2. Workplace accidents that endanger the ship’s crew

3. Operational downtime resulting in financial losses

Trust the Experts with Your Pedestal Crane Load Testing

Standard-compliant load testing for pedestal crane isn’t just about compliance but it’s also about ensuring your equipment maintains optimal performance over the long term. Make sure every one of your cranes has undergone standard-compliant load testing, whether for commissioning or periodic inspections.

Contact Goutama Weight & Testing today for professional, accurate, and reliable pedestal crane load testing services.
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