| abstract |
1,110,366. Ships; ship's fittings &c. CONCH INTERNATIONAL METHANE Ltd. 17 Jan., 1967 [21 March, 1966], No. 12293/66. Headings B7A and B7S. [Also in Division F4] A prismatic non-self-supporting fluid-tight metal tank 7, Fig. 1, for storing liquefied gas, e.g. methane, has an integral external key member 25, Fig. 3, extending along the full length of the junction of each two adjacent side, top, end and bottom walls and referred to as a corner and each key 25 is secured within a keyway 38, Fig. 4, formed in surrounding load-bearing insulation material 5. The tank 7 is made from pre-assembled annular units, each providing a portion of the top, bottom, and side walls 7a, 7b, 7c and are welded together to form expansion joints 24. The surrounding insulation 5 of balsa wood panels 9, plywood 13 and fibreglass is secured to the inner face of the inner hull, the deck 3 and bulkheads 4 of a ship by studs 15. Each key member 25 comprises a tube of quadrant cross-section filled with epoxy resin 28 and each keyway 38 is defined by stop blocks 34, 35 secured to panels 9 and wedges 36, 37. |