METHOD OF FIRE AND THERMAL INSULATION welded joints of pre-insulated pipes at ABOVEGROUND Laying of pipelines

摘要

1. A method for fire and heat insulation of pipes welded joint having factory insulation with a protective metal sheath, when laying the aerial comprising mounting surface of end portions welded metal tubes available from factory anticorrosion coating, heat-shrinkable sleeves of polymeric tapes with the hinge plate installation cuff on the heat-insulating coating consisting of shells of foam glass, which are half cylinders or segments of different shapes, the geometric dimensions to toryh provide their placement against the adjacent ends of the serial insulation to form, together with a protective metallic shell smooth outer surface, the shell fastened tie ribbons with locks followed by sealing the joint between the metal shell tube and the shell, by means of hot melt adhesive tape and installing the metal shell with overlapping on the protective metal sheath tubes, wherein a metal casing is made of galvanized sheet metal which oborachi ayut around the pipe portion with a coating of insulating shells and the free ends of which are arranged from the upper generatrix of the pipe with overlapping pre-tightening the cover to the dense shielding elementami.2 and fixed fasteners. The method of claim. 1, characterized in that the end edges at the pipe insulation plant and related shells adapted to be assembled at locking formation soedineniya.3. A method according to claim. 2, characterized in that the end edges at the pipe factory and insulation CME