Part 2 of the 2-part article. Click here to read Part 1.
Risk Analysis: A Crucial Step for Integrated and Attachable Lifting Points
A comprehensive risk analysis is mandatory before conducting a lift, whether utilising integrated or attachable lifting points. This analysis should consider the following key aspects regarding lifting points:
Lifting Point Selection Criteria
Choosing the appropriate lifting point is crucial for ensuring the safety and efficiency of any lifting operation. Here are some key factors to consider during the selection process:
Verification and Documentation
The selected lifting point should possess a valid test certificate conforming to the relevant standards. This certification verifies that the manufacturer adheres to stringent testing protocols, including proof load application, destructive tensile tests, and crack detection procedures.
Design and Calculation Resources
Providing engineers access to 2D/3D CAD design documents and calculation programs can significantly enhance the lifting point selection process. These resources allow engineers to incorporate lifting points directly into technical drawings while considering factors impacting WLL calculations, such as:
Simplified Lifting Point Inspection with RFID Technology
Regular inspection and maintenance of lifting points are essential for safe operation. RUD offers lifting points equipped with RFID transponders. These transponders contain unique identification numbers that a dedicated reader can scan to transmit data to cloud-based software. This technology simplifies inspection recordkeeping and allows for convenient access to vital lifting point information.
Click here to see the RUD ACP-TURNADO, the world’s first intelligent lifting point with RFID.
Lifting Point Purchasing Checklist
To streamline the selection process, consider this checklist when purchasing lifting points:
By following these guidelines and utilising available resources, you can ensure the selection of the most suitable lifting points for your specific lifting applications, promoting a safe and efficient operation. RUD Australia has a team of experienced, CPEng-qualified engineers who can assist you in selecting the correct lifting points for your application.
Article copyright to RUD Group. This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise.
This is a 2 part article.
Lifting points are fundamental elements within any lifting system. They are the crucial connection between lifting equipment (cranes, hoists) and the load itself, facilitating lifting, rotating, and manoeuvring operations. Common lifting point examples include eyebolts, swivel load rings and pad eyes, which connect to lifting chains using hooks, shackles, or other dedicated connectors. Modern lifting points are engineered to ensure safe load handling and to prevent damage throughout the lifting and transportation process.
Integrating Lifting Points at the Design Stage
With over 140 years of experience, RUD recognises that lifting points are often overlooked during the initial design phase. This can lead to complications and potential safety hazards later in the project. Incorporating lifting points should be prioritised from the outset to prevent such issues. This includes considering lifting requirements throughout the product lifecycle, from production and internal transportation to delivery, installation, assembly, and even potential relocation or decommissioning. Implementing lifting points at each stage minimises risk and promotes smooth operation. During the design phase, collaboration between the engineering, production, logistics, and supply chain management teams ensures proper lifting point integration.
Evolution of Lifting Points: From Simple Eye Bolts to Modern Safety Standards
Over time, lifting point design has evolved to comply with changing regulations and safety requirements. Four decades ago, DIN 580 eyebolts were the most prevalent lifting point option. However, a series of accidents in German underground operations, attributed to eyebolt breakage, necessitated stricter standards. These types of incidents regarding the misuse of collared eyebolts led to the development of modern lifting points, offering significantly higher safety margins against breakage in all directions. As a result, collared eyebolts such as DIN 580 and AS 2317.1 eyebolts are no longer the preferred choice for lifting points.
The Role of Lifting Points in Conjunction with Lifting Equipment
Lifting points play a vital role when working with lifting equipment like cranes, crane trucks, and material-handling machinery. Lifting chains that connect the machine to the load rely on these critical components. In Australia, specific standards for lifting (e.g. AS 4991, AS 3775.2, AS 3776) set the requirements for various lifting gear, prioritising operator safety. This focus on safety emphasises the importance of selecting the most suitable lifting gear for each application.
Types of Lifting Points: Boltable vs. Weldable, Rigid vs. Swivel
Lifting points are generally categorised into two primary types: boltable and weldable. Boltable options are the most common due to their versatility, allowing for easy assembly and disassembly as needed. They are available for standard thread sizes, offering maximum flexibility. Conversely, weldable lifting points are permanently affixed to the load. Their primary advantage is eliminating accidental unscrewing or over-tightening during load rotation or turning. Beyond these classifications, lifting points can also be rigid or swivelling. Rigid variants, such as collared eyebolts or pad eyes, lack adjustability in the pulling direction. Swivel lifting points, on the other hand, offer greater flexibility. They are commonly employed in multi-strand lifting applications, as they can automatically align themselves with the lifting force during load handling.
Click for our full range of bolt-on and weld-on lifting points.
Advantages of Lifting Points with Swivel and Rotation Capabilities
Lifting points specifically designed for rotating and turning applications offer additional benefits, translating into increased value. These points often integrate ball bearings, enabling a full Working Load Limit (WLL) under rotation. This makes them ideal for scenarios requiring load manipulation during lifting. The ball bearings significantly reduce sudden and unwanted movements during rotation, a crucial safety feature. Achieving smooth, impact-free rotation under load is only possible with these bearings.
Click here for an example of a ball-bearing lifting point - The RUD VWBG Load Ring.
Understanding Working Load Limit (WLL)
WLL is a critical industry term indicating the working load a lifting point can be subject to. Selecting appropriate lifting points necessitates a thorough understanding of their WLLs. Several factors influence a lifting point's WLL, including its attachment method, positioning, load symmetry, and the number of lift points used.
To be continued ...
Article copyright to RUD Group. This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise.
