Essential Non-redundant Primary Structure

Primary members that transfer the resulting cargo load to the crane hook or fork lift (e.g. forming the load path from the payload to the lifting sling); includes, at a minimum:

— top and bottom side rails;

— top and bottom end rails ;

— corner posts;

— pad eyes; and

— forklift pockets.

  • NOTE: Other primary structure may also be considered essential and/or non-redundant.

Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards

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