According to one or more embodiments disclosed herein is a method of transporting equipment between sea-surface and seafloor by providing a structure with equipment mounted thereon. The equipment may be liquid storage tanks, pumps, compressors, separators, metering systems, energy sources, communication systems, buoyancy tanks, and the like. The structure is used for disposal and installation in a subsea environment by changing the volume of buoyancy material within at least one buoyancy tank.

According to one or more embodiments disclosed herein is a method of transporting equipment between sea-surface and seafloor by providing a structure with equipment mounted thereon. The equipment may be liquid storage tanks, pumps, compressors, separators, metering systems, energy sources, communication systems, buoyancy tanks, and the like. The structure is used for disposal and installation in a subsea environment by changing the volume of buoyancy material within at least one buoyancy tank.

A method of constructing a dome-shaped roof on a cylindrical tank body includes processes of assembling roof beams into the tank body in a radial shape to form a structural skeleton unit of the dome-shaped roof, attaching wheels to front end portions of the roof beams and causing the wheels to abut an inner surface of the tank body in a state in which the wheels are able to roll in a vertical direction, lifting the structural skeleton unit by jack-up units installed at an upper end side of the tank body and causing the wheels to roll along the inner surface of the tank body to travel upward, and directly or indirectly attaching and fixing the structural skeleton unit to an upper end portion of the tank body after the structural skeleton unit is lifted to the upper end side of the tank body.

A method of constructing a dome-shaped roof on a cylindrical tank body includes processes of assembling roof beams into the tank body in a radial shape to form a structural skeleton unit of the dome-shaped roof, attaching wheels to front end portions of the roof beams and causing the wheels to abut an inner surface of the tank body in a state in which the wheels are able to roll in a vertical direction, lifting the structural skeleton unit by jack-up units installed at an upper end side of the tank body and causing the wheels to roll along the inner surface of the tank body to travel upward, and directly or indirectly attaching and fixing the structural skeleton unit to an upper end portion of the tank body after the structural skeleton unit is lifted to the upper end side of the tank body.

A cover for a lagoon is provided. The cover includes an expandable membrane; a plurality of stretchable members coupled to the expandable membrane and configured to compress the expandable membrane; and a plurality of restraining members coupled to the expandable membrane and configured to limit expansion of the expandable membrane.

An underground water-storage system that includes a sump having a base and sidewalls that cooperate to define an open-topped box that defines a reservoir, a plurality of plastic water matrices each defining a void space for receiving water, and a lid. The sump and lid are formed of a reinforced geomembrane material and include welds and are prefabricated in a location remote from an installation site of the underground water-storage vault more than two days prior to installation.

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.