WATERTIGHT AND THERMALLY INSULATING TANK BUILT INTO THE BEARING STRUCTURE OF A SHIP AND METHOD OF MANUFACTURING INSULATING CAISSONS INTENDED TO BE USED IN THIS TANK

摘要

WATERTIGHT AND THERMALLY INSULATING TANK BUILT INTO THE BEARING STRUCTURE OF A SHIP AND METHOD OF MANUFACTURING INSULATING CAISSONS INTENDED TO BE USED IN THIS TANK Watertight and thermally insulating tank built into the bearing structure of a ship, said tank comprising two successive watertightness barriers, one being a primary one in contact with the product contained in the tank and the other being a secondary one placed between the primary barrier and the bearing structure, at least one thermally insulating barrier being provided between the bearing structure and the secondary watertightness barrier and/or between the two watertightness barriers, each thermally insulating barrier consisting of a number of caissons(102)of roughly parallelepipedal overall shape, each caisson having a bottom panel(105)and a top panel(106)made of plywood, characterized in that the panels of each caisson are spaced apart by a number of spacer pieces(103)which consist of thin sheets of plywood, extending at right angles to said panels, each caisson being at least partially filled with blocks of foam(104), bonded over a substantial part of the height of each spacer piece, to prevent the spacer pices from buckling under load.