A form-coded collar assembly that is configured to be attached around a filling pipe extending into an underground fuel storage tank and comprises a radial lip defining an opening at its open end, and a system having a plurality of such form-coded collar assemblies. The collar assembly has a base plate with a hollow center comprising a greater footprint than the filling pipe; a form-coded collar that corresponds to a substance contained within the underground storage tank; and a sidewall extending between a user-facing surfaces of said base plate and said form-coded collar.

A form-coded collar assembly that is configured to be attached around a filling pipe extending into an underground fuel storage tank and comprises a radial lip defining an opening at its open end, and a system having a plurality of such form-coded collar assemblies. The collar assembly has a base plate with a hollow center comprising a greater footprint than the filling pipe; a form-coded collar that corresponds to a substance contained within the underground storage tank; and a sidewall extending between a user-facing surfaces of said base plate and said form-coded collar.

A system and method for storing molten sulfur includes a reinforced concrete vessel, the reinforced concrete vessel being subterranean. The vessel has a floor that is a raft footing formed of reinforced concrete and has a floor interior surface. The vessel also has a ceiling that is a slab of reinforced concrete and has a ceiling interior surface. Sidewalls of the vessel extend between the floor and the ceiling and are formed of reinforced concrete, each sidewall having a sidewall interior surface. A liner is bonded to the floor interior surface, the ceiling interior surface, and each sidewall interior surface. The liner formed of an epoxy vinyl ester resin, and a glass fiber sheet embedded in the epoxy vinyl ester resin.

A system and method for storing molten sulfur includes a reinforced concrete vessel, the reinforced concrete vessel being subterranean. The vessel has a floor that is a raft footing formed of reinforced concrete and has a floor interior surface. The vessel also has a ceiling that is a slab of reinforced concrete and has a ceiling interior surface. Sidewalls of the vessel extend between the floor and the ceiling and are formed of reinforced concrete, each sidewall having a sidewall interior surface. A liner is bonded to the floor interior surface, the ceiling interior surface, and each sidewall interior surface. The liner formed of an epoxy vinyl ester resin, and a glass fiber sheet embedded in the epoxy vinyl ester resin.

Equipment (1) including a container (19) for the storage of a liquid (2) as well as thermal insulation panels (12,13), wherein none of the thermal insulation panels (12,13) is mounted directly on or even in contact with an outer surface of the container (19), wherein a chamber (5) housing the container (19) is delimited by an enclosure (6) consisting of walls (7), a floor (8) and a ceiling (9), and which is accessible through an access opening, either in the form of an entrance opening in one of the walls (7) closeable by a door or in the form of a manhole (11) closeable by a lid (10), wherein an inner surface of the chamber (5) is entirely covered with the thermal insulation panels (12,13) in such a way that a volume of space occupied by the container (19) is smaller than a volume of space delimited by the thermal insulation panels (12,13) at the inner side of the walls, the ceiling and the floor, leaving space for maintenance between the outer surface of the container (19) and the thermal insulation panels (12,13) mounted to the inner surface of the chamber (5), and wherein the heat exchange between the insulated chamber (5) and its surrounding is restricted to (i) a heat transfer liquid flowing in at least one pipe, the pipe extending through the thermal insulation at the inner side of the chamber (5) between the container (19) and the outside of the chamber (5), and possibly (ii) an unwanted heat leakage just through the thermal insulation panels (12,13) at the inner side of the chamber (5).

Equipment (1) including a container (19) for the storage of a liquid (2) as well as thermal insulation panels (12,13), wherein none of the thermal insulation panels (12,13) is mounted directly on or even in contact with an outer surface of the container (19), wherein a chamber (5) housing the container (19) is delimited by an enclosure (6) consisting of walls (7), a floor (8) and a ceiling (9), and which is accessible through an access opening, either in the form of an entrance opening in one of the walls (7) closeable by a door or in the form of a manhole (11) closeable by a lid (10), wherein an inner surface of the chamber (5) is entirely covered with the thermal insulation panels (12,13) in such a way that a volume of space occupied by the container (19) is smaller than a volume of space delimited by the thermal insulation panels (12,13) at the inner side of the walls, the ceiling and the floor, leaving space for maintenance between the outer surface of the container (19) and the thermal insulation panels (12,13) mounted to the inner surface of the chamber (5), and wherein the heat exchange between the insulated chamber (5) and its surrounding is restricted to (i) a heat transfer liquid flowing in at least one pipe, the pipe extending through the thermal insulation at the inner side of the chamber (5) between the container (19) and the outside of the chamber (5), and possibly (ii) an unwanted heat leakage just through the thermal insulation panels (12,13) at the inner side of the chamber (5).

Storage tanks, for example, underground septic tanks, and their methods of fabrication are provided. The tanks include a substantially liquid impermeable plastic vessel having a top, a bottom, and sides; a concrete container encasing and retaining the plastic vessel, the concrete container contacting the bottom and at least partially contacting the sides of the plastic vessel; and at least one opening for receiving effluent, for example, waste effluent, into the plastic vessel. The methods of fabricating the tanks include positioning a plastic vessel into an enclosure; introducing concrete into the enclosure about the plastic vessel; allowing the fluid concrete to cure to provide a substantially solid concrete container about the plastic vessel; and removing the plastic vessel having a concrete container from the enclosure. Vessel shape retaining devices are also disclosed. Aspects of the invention are uniquely adapted to underground storage.

A container made of plastic and having a receiving volume of 2000 to 10000 liters comprises an upper container part and a lower container part and at least one clamping device which connects the two container parts in a sealing manner. Further, a plastic blow molding process is described, which serves to produce the container.

A container made of plastic and having a receiving volume of 2000 to 10000 liters comprises an upper container part and a lower container part and at least one clamping device which connects the two container parts in a sealing manner. Further, a plastic blow molding process is described, which serves to produce the container.

A system and method for measuring water pressure on a foundation. Sensors may provide data related to the environment surrounding a foundation. Analysis of the sensor data determines properties of the environment, which may include a foundation water pressure. The system and method may determine damage to the foundation based upon the foundation water pressure.