초록

Liquid cargo tank and support system suitable for liquified natural gas, LNG, for LNG cargo ships includes a semi-membrane tank having vertical walls constructed of a series of curved plates and a girder support system that permits access to the tank exterior.

대표청구항 ▼

[ We claim:] [1.] A semi-membrane LNG containment and bracing system disposed in a hold of a double-hulled cargo ship having an inner hull and an outer hull, said hold being defined by the inner hull and transverse bulkheads, comprisingan insulated prismatic tank having a top side, a bottom side and

[ We claim:] [1.] A semi-membrane LNG containment and bracing system disposed in a hold of a double-hulled cargo ship having an inner hull and an outer hull, said hold being defined by the inner hull and transverse bulkheads, comprisingan insulated prismatic tank having a top side, a bottom side and four vertically extending semi-membrane side walls, each side wall comprising a series of long, parallel, horizontally extending, outwardly curved sections, each extending across said side and having a chord length of from 1.2 to 4.5 m, said side wall further comprising junctions between said curved sections, anda bracing system supporting said side walls from said hull and inner said transverse bulkheads, comprising horizontally extending girders supported by said hull and said bulkheads and supportingly connecting them to said sidewalls along said junctions through load-bearing insulation blocks abutting said junctions, rein said girders have sufficient width to provide a space between said side walls, on the one hand, and said inner hull and transverse bulkheads, on the other hand, for human access to said space.