SEAM BUTT TYPE INSULATION SYSTEM HAVING WELDABLE SECONDARY BARRIER FOR LNG TANKS

摘要

A seam butt type insulation system having a weldable secondary barrier for LNG tanks is disclosed. The seam butt type insulation system of the present invention includes secondary insulation panels (20), which are continuously arranged and coupled to a support body through insulation panel connection members, a tongue (30), which is provided in the upper surface of each secondary insulation panel (20), and a secondary barrier (40), which is formed into an integrated structure by welding opposite edges of each of a plurality of invar strakes (41) to the tongues (30) of the adjacent secondary insulation panels (20). The seam butt type insulation system further includes a primary insulation panel (10), which is provided on each invar strake provided between the adjacent tongues (30), a coupling unit (50), which couples adjacent edges of the adjacent primary insulation panels (10) to each tongue, and a primary barrier (60), which is welded to the upper surfaces of the primary insulation panels (10).