Watertight and thermally insulating tank with improved longitudinal solid angles of intersection
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United States of America Patent
Stats
-
Apr 30, 2002
Grant Date -
Feb 28, 2002
app pub date -
Aug 20, 2001
filing date -
Aug 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Watertight and thermally insulating tank intended for the transportation of liquefied gases by sea, said tank being built into a bearing structure (1) comprising longitudinally adjacent faces (2) forming a dihedron (4); said tank comprising two successive watertightness barriers, one of them a primary watertightness barrier in contact with the product contained in the tank and the other a secondary watertightness barrier (14,55,30,40) arranged between said primary watertightness barrier and the bearing structure, a primary thermally insulating barrier (12,13,24,27,28,29,37,38,51,54,71) being arranged between these two watertightness barriers and a secondary thermally insulating barrier (15,16,57,58,31,32,41) being arranged between said secondary watertightness barrier and the bearing structure; said primary watertightness barrier comprising substantially flat running metal strakes (62) and, on each side of the longitudinal solid angle of intersection (A) of at least one of said dihedra, a longitudinal row of corner strakes (65) which are corrugated so that they can deform transversely.
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