National Steel and Shipbuilding Company

General Dynamics Nassco

General Dynamics National Steel and Shipping Company

National Steel and Shipping Company

William E Michaud

David L Jordan

Embodiments of the invention relate to support arrangements for semi-membrane tank walls and, more particularly, to a universal support assembly for tanks that experience thermal expansion and contraction. One embodiment of the invention may include a tank assembly having at least one tank wall, a support structure at least partially adjacent to the wall, and a link member coupling the tank to the support structure. The link member may be configured to accommodate relative movement between the tank and the support structure through rotation. The link member may be coupled to the tank wall by a ball and socket joint and coupled to the support structure with another ball and socket joint, allowing substantially unlimited in-plane movement of the tank wall relative to the support structure.

Universal support arrangement for semi-membrane tank walls

The invention pertains generally to manufacturing and installing a semi-membrane tank for liquefied natural gas (LNG). Specifically, the invention relates to a method and apparatus for facilitating off-hull manufacturing of a completed semi-membrane LNG tank and installation of the tank in a permanent supporting structure, such as a ship's hull. Embodiments of the invention include attaching a support structure to the top and the sides of an LNG tank and attaching a support net to the support structure. The support net may be configured to support the bottom of the tank including any insulation that may be applied to the bottom. Once the support structure and support net are attached to the tank, the tank may then be moved from an assembly location to a permanent support structure where it may be permanently attached.

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Groton, CT, United States of America

William E Michaud