Finally, the lift director must review the complete plan in a meeting with all workers who will be involved in the operation. The lift must also be directed by a person who meets the criteria for both a competent person and a qualified person, or by a competent person assisted by one or more qualified persons. Tandem lifting plans must be developed by a qualified person, and if the qualified person determines that engineering expertise is required, the employer must ensure it is provided. OSHA 1926.1432 outlines a few requirements for tandem lifting plans.
The first step in safely executing a tandem crane lift is to prepare a rigging plan that will investigate all possibilities of overloading the cranes involved. However, tandem lifts have the potential to become very dangerous if not handled properly. Tandem lifts can be very useful, and they are often used to place structural beams for bridges, move large loads, and lift long components from horizontal to vertical positions. When lifting heavy or oddly shaped objects, it is sometimes desirable to use two cranes in tandem rather than a single higher-capacity crane.
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