A thorough examination, including chain usage, should be carried out by a competent person at least every year or more frequently according to statutory regulations, type of use and past records.

• Chain and components wear should never exceed 10% of the original dimensions.

• Chains with bent links or with cracks or gouges in the link should be replaced, as should deformed components such as bent master links, deformed hooks and any fittings showing signs of damage.
• Once a chain sling has been overloaded it must be taken out of service.

• Store chain slings on a properly designed rack. They should not be left lying on the floor where they may suffer mechanical or corrosion damage or may be lost.

In Canada, the rigging industry recognizes the American Society of Mechanical Engineers (ASME) standards for securing, rigging and lifting industries. Standard ASME B30.9 applies to wire rope slings, chain slings, web slings or synthetic slings and round slings. ASME B30.20 applies to below the hook lifting devices like spreader bars, spreader beams, lifting magnets, vacuum lifters, tirfors, lever hoists (pullers), manual hoists (chain fall), and plate clamps.

Further provincial regulations may apply. Be sure to read the manufacturer label, instructions and warnings for further safety and inspection guidelines.

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