As 4991 pdf-2025

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  1. Click ‘Get Form’ to open the AS 4991 PDF in the editor.
  2. Review the document's sections, starting with 'SCOPE AND GENERAL'. This section outlines the general requirements for lifting devices.
  3. Fill in any required fields related to load designations and safety mechanisms as specified in Section 2. Ensure you understand the definitions provided in Section 1.6.
  4. Navigate through each section, such as 'GRIPPING DEVICES' and 'LIFTING MAGNETS', and complete any relevant information based on your specific needs.
  5. Once all fields are filled, review your entries for accuracy before saving or exporting the completed form.

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Working Load Limit This was originally specified by the EU Machinery Directive. The Factor of Safety specified for forged (metal) equipment like shackles and chains is 4:1, steel wire rope is 5:1, and ropes and slings made from artificial fibres is 7:1.
Australian Standards and Lifting Lugs AS4991 is often the best fit.
Rigging equipment in ance with Australian Standards will have a high safety factor of 6:1. This is an important safety feature. The safety factor helps to counter possible problems from shock, vibration, fatigue, wear, damage and corrosion.

People also ask

The factor of safety in lifting equipment design In the US and the EU, it has to be between 4:1 and 7:1 for rigging equipment and between 2:1 and 3:1 for hoisting devices.
Certification of Lifting Devices and Equipment to AS4991.
In 2004 Standards Australia released their design criteria for Lifting Devices under a new standard AS4991. The design criteria within this standard expects that your lifting attachment can withstand a proof load of 2 times the units working load limit (WLL) up to a load capacity of 10 tonne.
AS 4991 2004 Lifting Devices specifies general requirements for the design, testing, marking and correct care and use of lifting devices that can be fitted directly or indirectly to the hook or any other coupling device on a crane, hoist or winch, as defined in AS 2549, without affecting its integrity.
In the section covering leaf chain, the Machinery Directive states that the minimum safety factor when lifting a weight should be 4:1. In other words, the leaf chain should be able to lift four times the maximum weight it will be lifting in its working life.

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