CORNER INSULATION BOARD AND LNG STORAGE TANK HAVING THE CORNER INSULATION BOARD

摘要

PURPOSE: An insulation board of a corner portion and a LNG(Liquefied Natural Gas) storage tank having the same are provided to improve a construction quality by preventing the stress delivered to a first barrier from being focused on one part. CONSTITUTION: A corner part insulation board(100) comprises a lower insulation board(10), a second barrier(20), an upper insulation board(30), a primary barrier(40). The lower insulation board is bent at the same angle with a corner part(12) and installed in an inner hull. The lower insulation board comprises a lower insulation member protecting plate(11) and a lower insulation member(13). The second barrier is joined to the lower insulation board. The upper insulation board comprises first and second planes. The upper insulation board is bent at the same angle with a corner part(12) in the first plane joining to the second barrier. The second plane is roundly formed. The first barrier is joined to the upper insulation board.