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 ? 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.

A modular storage structure can be constructed from a number of modular wall panels and modular roof panels. Multiple modular wall panels can be joined to form a wall system of the storage structure. The wall panels can be serially connected together such that a J-shaped interlock member of one panel is in abutting relationship with a corresponding J-shaped interlock member of another wall panel to define a series of wall stud assemblies adapted to receive fasteners for joining wall layers. The roof panels can be serially connected together in a similar fashion. In embodiments, the storage structure can be constructed such that it meets the predetermined requirements for a fire rating (e.g. a 2-hour or a 4-hour fire rating).

A modular storage structure can be constructed from a number of modular wall panels and modular roof panels. Multiple modular wall panels can be joined to form a wall system of the storage structure. The wall panels can be serially connected together such that a J-shaped interlock member of one panel is in abutting relationship with a corresponding J-shaped interlock member of another wall panel to define a series of wall stud assemblies adapted to receive fasteners for joining wall layers. The roof panels can be serially connected together in a similar fashion. In embodiments, the storage structure can be constructed such that it meets the predetermined requirements for a fire rating (e.g. a 2-hour or a 4-hour fire rating).

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 ? 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.

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 fiber, 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.

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 fiber, 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.

The basin cover having evenly-spaced covering elements mounted to shelf angles along the sides of the basin. These shelf angles are retained by anchor bolts to the inside edge of the rim of the basin. Flat tabs are adjustably spaced apart along the shelf angles and respectively overlap unevenly-spaced anchor retention areas of the basin. The flange portion of the shelf angles extend in a same plane as a walkway along the rim of the basin for widening this walkway. The new cover can be installed to basins of different conditions without major custom work.

The invention is directed to a method of insulating tanks having a capacity between 200 m.sup.3 and 20,000 m.sup.3 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.

The invention is directed to a method of insulating tanks having a capacity between 200 m.sup.3 and 20,000 m.sup.3 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.

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.