Abstract: A triple-walled underground storage tank is provided with primary, secondary and tertiary walls. Between each two adjacent walls, an annular space is provided. The annular space is continuous throughout, and permits the flow of liquid therein. Monitors may provided separately for each annulus, to detect the formation of leaks, or a lack of containment, in either wall defining the annular space. In one embodiment, the tertiary wall is a smooth cylinder formed about the circumferential ribs of the secondary wall. In the alternative embodiment, the rib-bearing wall is the tertiary wall, and the walls and annular materials of the tank are formed within a female mold. In either case, a tank prepared from integral ribs, with superior robustness and strength, is provided with triple containment.

Abstract: The invention is a tank trailer which can be towed to location. It is generally rectilinear, although the roof slopes at the back end, where the stairs are. The stairs enable the top of the tank to be accessed by personnel without having to clamber over the piping assembly mounted low on the end of the tank The dual staircases also enable personnel to safely move from tank to tank when several of them are parked alongside each other.

Abstract: An improved double wall tank has two or more threaded fittings, with a steel outer tank and a thermoplastic inner tank. The inner tank is formed within the outer tank by rotational molding. The inner tank is bonded to the outer tank in an area of the fittings, but is otherwise separate and apart from the outer tank. Before carrying out the rotational molding process, bonding material is applied to the outer tank in the area of the fittings. The thermoplastic material is in powder form and includes mold release material. The thermoplastic material is inserted into the outer tank before rotational molding. The degree of shrinkage of the inner tank can be controlled by air pressure including an area between the fittings.

Abstract: A tank contains a liquid while being transported by a moving vehicle. The tank includes a shell having an annular wall interconnecting opposite longitudinal end walls. The annular wall and the end walls define an interior compartment. The shell also has a substantially horizontal length direction and a substantially horizontal width direction perpendicular to the length direction. Two substantially planar longitudinal baffles are disposed within the interior compartment of the shell. Each longitudinal baffle is oriented substantially vertically and substantially parallel to the length direction of the shell. Each longitudinal baffle has a first side facing the annular wall. Each longitudinal baffle also has a second side. The second sides face each other. A plurality of substantially planar latitudinal baffles are disposed within the interior compartment of the shell. Each latitudinal baffle is oriented substantially vertically and substantially parallel to the width direction of the shell.

Abstract: An above ground storage tank for holding combustible material and for supporting equipment thereon, such as an electric power generator, has an inner tank with a bottom wall, opposed side walls, opposed end walls and a top wall preferably formed as metallic skins, the inner tank top and bottom walls having stiffening members, which is enclosed and supported in an outer tank having a bottom wall, opposed side walls, and opposed end walls, formed as metallic skins. A barrier insulation is preferably provided between the inner and outer tanks and mounting members are provided on top of the assembly to support equipment on the above ground storage tank.

Abstract: A below-grade, modular cast concrete containment vault which contains one or more primary liquid storage tanks. Dispensing pumps and sundry conduits and support equipment are attached to or supported within a cast cover. The cover is secured to the tanks. The pumps can be coupled to a remote control and communications kiosk. A manhole permits access to a ventilated secondary containment and inspection space within a base unit. Spill and overflow containment assemblies surround fill and vent pipes in the cover and direct spillage to the secondary storage space. Tertiary and auxiliary containment is also provided for spillage from the dispensing pumps and backup storage for the overflow containment assemblies. Additional standpipes communicate with the base and support additional monitoring and inspection equipment.

Abstract: A container for the above-ground storage of flammable fuels has an inner tank which may be rectangular, with a bottom surface, side surfaces, and a top surface, or which may be some other shape, such as cylindrical, placed within an outer shell having a similar shape. In the case of a rectangular inner tank and a rectangular outer shell, the bottom surfaces of the inner tank and outer shell are spaced apart from each other by first bottom spacers which connect the two bottom surfaces. The side walls of the inner tank and outer shell are also spaced apart from each other by second side spacers which connect the tank and shell. The side spacers for connecting the tank and shell prevent the inner tank from floating within the outer shell when an insulating material, such as concrete, is added therebetween. The inner tank may be constructed of metal, fiberglass, fiberglass-coated metal, polyethylene, or other like materials, while the outer shell is steel.

Abstract: A container for volatile liquids, such a gasoline, is made of a conductive plastic material. An electrical connection is made to the container, such as by using a metal hose clamp around the neck of the container (or a threaded stud which is molded into the container), so that a conductive cable can be electrically attached to the container. At the distal end of the conductive cable a spring loaded electric clip is attached, whereby the electric clip can be connected to a conductive portion on the equipment which is to be fueled. By using the present invention, the benefits of a plastic fuel container, including arbitrary shape, absence of denting or corrosion, light weight, and inclusion of a molded handle, can all be derived without the detrimental effect of build-up of static charge which can lead to an explosion if a spark ignites volatile fuel-air vapors.

Abstract: A sump containment apparatus for a fuel storage tank has a manhole skirt communicating with a sump interior, a bladder seal with a first portion secured in sealing engagement about an opening in the sump, and a second portion disposed about an inner surface of the manhole skirt and urged into sealing engagement with the inner surface by mechanical compression, preferably by an expansion ring. An observation port in a manhole cove is openable for viewing into the sump.

Abstract: An above ground storage tank for holding combustible material and for supporting equipment thereon, such as an electric power generator, has an inner tank with a bottom wall, opposed side walls, opposed end walls and a top wall preferably formed as metallic skins, the inner tank top and bottom walls having stiffening members, which is enclosed and supported in an outer tank having a bottom wall, opposed side walls, and opposed end walls, formed as metallic skins. A barrier insulation is preferably provided between the inner and outer tanks and mounting members are provided on top of the assembly to support equipment on the above ground storage tank.

Abstract: A hybrid fiberglass/steel underground storage tank that combines the advantages of a fiberglass tank with those of a steel tank and can be used with various monitoring systems. The tank includes an interior portion made of steel and an exterior portion made of fiberglass. The exterior portion has at least one resin and glass layer, preferably formed of chopped glass mat and 100% solids epoxy resin, coupled to a spacer formed of a three-dimensional woven glass fabric, such as Parabeam®. The interior steel portion and the exterior fiberglass portion are integrally formed to create a single structure. A method of making a hybrid tank is also described.

Abstract: A field applied lining system for the inside surface of fluid containment vessels is described. The lining system includes a lining joined to the inner walls of a fluid containment vessel, defining an interstitial space between the inner wall of the storage tank and the lining. The lining consisting of a plurality of panels of pre-manufactured Fiber Reinforced Plastic joined to each other. A support structure is placed in the interstitial space, the support structure defining avenues for fluid flow through the interstitial space. One or more conduits are provided between the interstitial space and one or more sampling ports placed at the perimeter of the one or more sampling ports placed at the perimeter of the storage tank, permitting access to the interstitial space and the avenues for fluid flow through the interstitial space.

Abstract: A double-walled, below-grade, modular, liquid containment vault that contains one or more primary storage tanks. Dispensing pumps and sundry conduits and support equipment are attached to or supported to a cover or top wall of the vault. The outer shell or base and primary tanks of the vaults can be constructed from concrete, steel, fiberglass or other composites. In concrete and steel vaults, the cover is secured to the primary tanks. The cover can also be bound to the walls of the outer shell. The pumps can be coupled to a remote control and communications kiosk. A manhole turret provides access to a ventilated secondary containment and inspection space within a base unit. Spill and overflow containment turret assemblies surround fill and vent pipes in the cover and direct spillage to the secondary storage space. Tertiary and auxiliary containment is also provided for spillage from the dispensing pumps and backup storage for the overflow containment assemblies.

Abstract: A wheel-shaped pressure-resistant vessel for storing gaseous, liquid or liquefied fuel and which has a substantially rigid shape. Specifically, the vessel contains a substantially continuous shell of a fiber-reinforced resin. The shell has a central opening, an inner lining and an axial reinforcement member. The shell has a substantial mechanical equilibrium shape such that the axial member is situated in a central opening. The axial member contains an inner member and two end plates, with each of the end plates fixing the shell to the inner member. Further, the axial member is attached, through both end plates, to the shell such that outer surfaces of the shell are pulled towards each other, thus reinforcing the vessel and maintaining the vessel, even while it is pressurized, in its wheel-like shape.

Abstract: A boltless two-piece rail fastening assembly for securing a railway rail, supported on a conventional tie plate, to a wooden cross tie is comprised of a chair and a rail clip latched thereon. The chair includes a body, having a jaw with a bight configured to receive the clip, and at least one downwardly projecting leg or shank for securing the chair adjacent the base flange of the rail. The rail clip is a torsional spring clip in the general form of an "S" having a rail-bearing leg for proximate engagement with the base flange of the rail and a tie bearing leg for proximate engagement with the tie plate.