Abstract:
The invention is directed to a method of insulating tanks having a capacity between 200 m3 and 20,000 m3 used for storage of oil and oil products. In the method, foundation elements, including tank bottom heat insulation, are prepared. The tank is mounted on the prepared foundation, then insulation of the tank walls and roof is installed. Supporting relieving skirts are mounted on the tank walls and roof, forming tiers. The tiers are filled with foam glass blocks having expansion joints. A top coat of metal sheets is mounted on the outer surface of the blocks. Foam glass blocks in the lower tier are made to be removable to provide access to a “wall-bottom” corner weld joint, and the blocks of the remaining tiers are fixed to the tank surface and interconnected with an adhesive material.
Abstract:
This application discloses a new type of suction leg, an offshore caisson, a sit-on-bottom supporting platform. The suction leg includes a sealing long pile, this sealing long pile including a tubular pipe and a top head connected tightly to the tubular pipe to form cylindrical integral structure with sealing top and opening bottom. The top head has at least one opening to be able to open or close. The sealing long pile can be penetrated into the seabed by a gravity penetration method or/and a suction pile penetration method, or pulled out from the seabed by a buoyancy uplift method or/and a suction pile uplift method.
Abstract:
A steel plate and concrete composite tank unit, tank groups and offshore platforms with new type of tank units are disclosed. The tank unit comprises an outer concrete tank that comprises an outer tank shell, two heads and ring shell connections at both ends, an inner steel tank that comprises an inner tank shell, epitaxial structures at both ends of the inner steel tank. Inner tank shell is connected to the outer tank shell by epitaxial structures, and an isolation layer that is formed from the gap between the outer concrete tank and the inner steel tank where it is filled with isolation medium.
Abstract:
A method for constructing a cylindrical tank which has a metallic inner tank and a concrete outer tank includes a step of building up a PC wall in an outer circumferential edge portion of a base plate, a step of assembling an outer tank roof on the base plate other than the outer circumferential edge portion of the base plate, a step of lifting the outer tank roof which is on the base plate using a jack-up unit while the PC wall is being built up and then holding the outer tank roof on the PC wall, and a step of assembling the inner tank independently of the outer tank roof in a space under the outer tank roof which is created due to the lifting.
Abstract:
A test cell (10) for containing equipment (12) subject to pressure testing comprises a plurality of metal plate wall panels (14) and a mesh roof panel (16) formed from mesh strands (26) of a high strength material. Each wall panel has a lapped connection (18) with an adjacent wall panel. The mesh panel (16) may be formed from a ballistic fabric, and the mesh strands (26) may be wire, rope and braid of steel, metal, plastic, natural or composite fibre, or a combination thereof. In the event of a pressure failure of the equipment (12) under test, the roof panel (16) captures fragments of the equipment while allowing the dissipation of pressure shock waves through the apertures (28) in the mesh. The lapped connections (18) between wall panels (14) result in increased friction between adjacent wall panels (14) and thus an increase in the strength of the connection when subject to pressure shock waves.
Abstract:
A fluid containment system comprises a plurality of curved panels having a front face a rear face, a top end, a bottom end and two side ends, wherein the plurality of curved panels are positioned serially adjacent one another in a generally upright or vertical manner so as to comprise a generally circular arrangement, with each of the plurality of curved panels further comprising at least one fastening member on its front face and wherein the fastening member is suitable to generally abut to a similar fastening member of an adjacent curved panel. Once fastened, the plurality of curved panels may be lined with a liner and used for fluid storage. In another aspect a fluid handling and containment apparatus comprises a tank suitable to hold a volume of fluid, the tank having a main compartment with a plurality of outlets exiting from the main compartment.
Abstract:
A method is disclosed for manufacturing from a rigid single-wall tank having spindle members attached to and extending outwardly of each of its end portions a rigid double-wall tank for the storage of liquids. The method includes applying to the exterior surface of the inner tank a spacing material, applying over the inner tank and the spacing material an outer sheath with at least a portion of the outer sheath applied adjacent to each spindle member then removing at least one of the spindle members from the end portions of the inner tank and urging the outer sheath overlying the end portions away from the end portions to form a space between the end portion of the inner tank and the outer sheath, inserting into the spacing material and then sealing the end portion of the inner tank by applying a substantially liquid-tight sheath. From this method there results a rigid double-wall storage tank having an outer sheath spaced from the outer surface of the inner tank along at least a portion of cylindrical side walls and the end portions of the inner tank.
Abstract:
The large diameter pressure vessel is constructed without flanges and has resiliently deformable ring elements welded to the respective ends of a hollow member and a cap. These ring elements are locked together by various types of locking means. In one embodiment, a ball type closure is used while in other embodiments hasps are utilized.
Abstract:
A trench is dug under an above ground water storage tank either before erection of the walls or after the wall is erected. A (rectangular) sump is preferably made of ¼ inch steel. It serves as a conduit from an inner tank liner port to an outside tank fill or drain port. The system eliminates hoses hung over the top edge of the tank wall. A pump can fill the tank from the outer port. The tank can be drained using head pressure of the water and/or a pump.