Abstract: The application relates to carriage of goods by public roads. A freight handling apparatus includes a frame having a coupling mechanism for coupling to a motor vehicle, a container-carrying deck, a wheel suspension, an outer body in the form of a rectangular freight container, the inner space of the outer body being divided in horizontal direction by a plate to accommodate in the lower freight compartment a reusable tank with necessary control and measurement equipment, filling and drain fittings. The freight handling apparatus simplifies and secures its transportation on roads as much as possible by lowering the center of gravity and arrangement of the center of gravity of the tank close to the axis of the vehicle carrying the apparatus, facilitates maintenance and inspection of the tank without removing it from the frame, and makes easier loading and unloading of goods.

Abstract: A trailer configured to lower an overall center of gravity thereof. The trailer comprises a tank, a wheel assembly, a height and a length. The tank comprises a cavity contained within a lower body, a tilted body, a front end and a rear end. The lower body comprises a lower body height, a lower body length, a lower body ground clearance and a lower center of gravity. The tilted body comprises a tilted body ground clearance, a tilted body length, the height and a tilted portion center of gravity. The tank comprises the length, a height equal to the height of the tilted body, and a ground clearance equal to the lower body ground clearance.

Abstract: A process for collection, storage and transport of boil off-gas from a liquefied natural gas storage tank. An ultra-low temperature, composite gas tank is provided to accept the boil-off gas and saturated vapor at ultra-low-temperatures in a range of about ?80° C. to ?45° C. (about ?112° F. to ?229° F.) and at high pressure of about 150 bar (about 2,175.5 psi). Boil off gas collected from liquefied natural gas storage at a pressure in a range of about 15 to 18 bar (217.5 psi to 261 psi) and at a temperature in of about ?150° C. (about ?238° F.). The ultra-low temperature, composite gas tank can hold the gas as it warms to ambient temperature. The process includes a liner step; a filament step; a wrap step; and a filling step. Optional steps include an insulation step; a fiber step; a layering step; a nozzle step; and a gas step.

Abstract: A mobile vessel for refueling an engine or tank of a vehicle at a remote refueling site. A refueling station is mounted to the mobile vessel and includes a movable platform mounted to a generally horizontal deck. The platform is movable between a deployed position and a stowed position. In the deployed position the platform extends away from the deck to provide a floor for the worker to stand on to connect the fuel dispenser to the engine or tank. In the stowed position the movable platform is folded from the deployed position towards the generally horizontal deck.

Abstract: A trailer configured to lower an overall center of gravity. The trailer comprises a tank, a wheel assembly, an upper body height and a trailer length. The tank comprises a cavity contained within a lower body, an upper body, a transitioning body, a front end and a rear end when the cavity within the trailer is filled with a liquid fluid, the liquid fluid is evenly distributed along the trailer length of the trailer since a diameter of the lower body, the upper body and the transitioning body are equal.

Abstract: The invention uses a multiplicity of stacked storage racks at least one of which is inclined wherein each rack is equipped with a powered mechanism for deploying and retracting a large diameter drain hose or vent hose. The at least one storage rack that is inclined is used to store a large diameter drain hose such that a flex is formed in the stored hose which is at a lowered elevation than the uncoupled end of the stored hose. By this means a stored large diameter drain hose can transport, and not spill, fluid from a previous use.

Abstract: A trailer for transporting granular material, such as sand or proppant, has a purpose-built shape, and loading and unloading hatches at top and bottom. The trailer includes a hollow vessel for holding granular material. The vessel is enclosed with top and bottom hatches. The vessel has a tapered lower section and a domed upper section, allowing bulk material to be piled and concentrated horizontally below and above the hatches. A chassis extends fore and aft of the vessel, and potentially through an interior of the vessel. The chassis may extend upward from a wheeled section so as to pass through a vertically central part of the vessel. The chassis may also act as a trailer suspension system. The vessel may be made of aluminium and mounted to the steel chassis.

Abstract: A tank trailer includes front, rear, and transition sections. The front section has a front frame having a front-frame front end, which is at a front-frame height above a surface upon which the tank trailer rests, and a front-frame rear end. The front section includes a cylindrical front barrel coupled to the front frame and having a front-barrel diameter and a front barrel length. The rear section has a rear frame having a rear-frame front end and a rear-frame rear end, which is at a rear-frame height above the surface, and a cylindrical rear barrel coupled to the rear frame, which has a rear-barrel diameter and a rear barrel length. The transition section includes a cylindrical transition barrel coupled to the front barrel and to the rear barrel and a transition-barrel diameter and a transition-barrel length along a transition-barrel height. The front-barrel diameter is the same as the rear-barrel diameter.

Abstract: A mobile compressed natural gas (CNG) vessel and unloader are used to supply CNG to a compressor during regulatory emissions testing of the compressor (e.g., U.S. EPA's Quad J testing). CNG output by the compressor is recirculated to an inlet of the unloader so that it is reused during the emissions testing. Lean CNG from the vessel may be used to power the compressor during the testing. The unloader ensures that the compressor is run at at least a predetermined load factor during the emissions testing.

Abstract: A pneumatic tank trailer includes a carriage and a tank supported on the trailer that can selectively discharge fluidizable material through hoppers of the tank. A nose portion of the trailer has a generally conical shape. The nose portion has a top that slopes downward and sides that taper inward as it extends forward. A cross-sectional center point of a front end of the nose portion is lower than a cross-sectional center point of a rear end of the nose portion along the height of the trailer. The length of the nose portion is at least 15% of the length of the trailer. Adjacent hoppers intersect at hopper crotches. The hopper crotches have short heights and the hoppers are arranged relatively close together.

Abstract: The present disclosure provides for an above-ground mobile storage tank that can be used in a variety of different commercial applications. In one embodiment, the storage tank may comprise a tank shell, wherein the tank shell further comprises at least one floor wall, at least one top wall, and at least four side walls. The side walls may each be affixed to the floor wall and the top wall to from an interior tank space. Each of the wall panels may comprise a copolymer polypropylene material. The storage tank may also comprise a plurality of steel reinforcements, wherein each reinforcement is configured to encapsulate the tank shell. Each reinforcement may be affixed to a trailer, which is configured to transport the tank shell. The storage tank may also comprise a plurality of slip plates located on the trailer to enable the tank shell to “float” above the trailer.

Abstract: Trailers and methods of manufacture are provided. One trailer embodiment includes a storage vessel which may include hoppers and which may be partially formed from a plurality of top wall segments having peaks or other components angled relative to one another to provide improved aerodynamics. A jig is disclosed to facilitate one manufacturing process. Another trailer embodiment includes a storage vessel which may include hoppers and a top wall which is curved to provide improved aerodynamics.

Abstract: A trailer and method of manufacturing a trailer are provided. The trailer has a storage vessel which may include hoppers and which is partially formed from a plurality of top wall segments having peaks. The peaks or other components may be angled relative to one another to provide improved aerodynamics. A jig is provided to facilitate the manufacturing process.

Abstract: A mobile fluid storage tank for the use and storage of fluids comprising a unibody construction.

Abstract: An agricultural implement includes a frame assembly configured to support a storage tank. The frame assembly includes a pair of longitudinal beams positioned on opposite lateral sides of the storage tank, and multiple cross members extending between the pair of longitudinal beams. A substantially flat upper surface of each cross member is secured to a lower surface of each longitudinal beam, and each cross member is configured to support the storage tank via contact between the substantially flat upper surface of the cross member and a substantially flat lower surface of the storage tank such that the substantially flat lower surface of the storage tank is positioned vertically below an upper surface of each longitudinal beam.

Abstract: A trailer having an enclosed area with an integral toolbox is presented. The trailer includes a bulk tank with at least a first hopper and a second hopper. The first hopper has a first discharge port and the second hopper has a second discharge port. A discharge pipe is connected to the first and second discharge ports. A storage box is formed between and integral with the first hopper and the second hopper to define a storage chamber. A door is mounted on the storage box having open and close positions for respectively providing access to and blocking access to the storage chamber.

Abstract: An intermodal tank container and complementary chassis, and features and methods for use thereof, are disclosed. The intermodal tank container and chassis has an appearance and length substantially similar to a non-intermodal OTR tank trailer, while affording the same capacity as an intermodal tank container. The design of the tank container allows for an improved, lighter design for the chassis and for improved usability of the tank container in intermodal environments such as with rail cars. The reduced weight of the chassis allows for a greater payload while remaining within various applicable legal restrictions for gross vehicle weight, axle weight, etc.

Abstract: A semi-tractor trailer for distribution of natural gas and a system and method for use of the same are disclosed. In one embodiment, a semi-tractor trailer supported fuel receptacle has a plurality of metered fuel dispensers along the sides thereof to permit customers to park along side the semi-tractor trailer and fuel their vehicles with clean natural gas, which may be compressed natural gas or liquid natural gas, for example. The semi-tractor trailer is filled at a central filling location and transported by a tractor to a convenient retail location. A volume monitor monitors the volume of clean natural gas in the semi-tractor trailer and transmits this information to the central filling location, which may dispense a replacement semi-tractor trailer upon the volume of clean natural gas reaching a pre-determined threshold and retrieve the spent semi-tractor trailer in one trip.

Abstract: The present invention discloses a tank trailer for transporting flowable material. The tank trailer includes a low-profile tank having a rear section, a front section, and a transitional section. The transitional section connects the rear section and the front section such that flowable material can flow among the sections. The rear section has a rear circumference and a rear center of gravity. The front section has a front circumference and a front center of gravity. The front circumference is smaller than the rear circumference, and the rear center of gravity is lower than the front center of gravity. The sections have tops that are collinearly aligned. The front section and the transitional section are frameless underneath. The tank trailer also includes a trailer suspension operatively connected to the rear section.

Abstract: A fluid storage container and method is disclosed. The fluid storage container comprises a base frame that supports a tank, a tank for storing fluid, a working surface area walkway built into an end of the tank, a ladder connected near the front of the walkway to the frame, a plurality of handrails on the walkway that can be positioned depending on the required function of the tank, a plurality of strut panels that serve as floorboards on the walkway, a bridge that extends from the left and right sides of the tank to connect to other like tanks, a safety chain that connects between adjacently parked containers, and a dual manifold assembly. A method for configuring the tank's walkways as continuous walkways when parked adjacent to each other is disclosed. A dual manifold system and method for operating the manifolds is also disclosed.

Abstract: A cap assembly (40) for attachment to an external fixture (44) on a tank (52) of a tanker trailer (50), including: a collar (42) configured to secure the cap assembly to the tank external fixture and defining a collar opening (46) concentrically aligned with an opening (54) of the fixture; a lid (60) that is moveable between a closed position where the lid covers the collar opening and is in sealing engagement with the collar, and an open position where the lid is vertically raised from the collar and pivoted laterally away from the collar opening; and an actuator assembly (72) that is configured to move the lid from the closed position to the open position during a single stroke of the actuator assembly, and which is remotely operable from a location off of the tanker trailer.

Abstract: A lightweight intermodal or road trailer based system for transporting refrigerated gaseous fluids is provided. The system includes an enclosed and insulated transportation housing, and a plurality of low-temperature resistant type 4 pressure vessels. The pressure vessels are at least three feet in diameter secured within the transportation housing for containing the gaseous fluids.

Abstract: A semi-tractor trailer for distribution of natural gas and a system and method for use of the same are disclosed. In one embodiment, a semi-tractor trailer supported fuel receptacle has a plurality of metered fuel dispensers along the sides thereof to permit customers to park along side the semi-tractor trailer and fuel their vehicles with clean natural gas, which may be compressed natural gas or liquid natural gas, for example. The semi-tractor trailer is filled at a central filling location and transported by a tractor to a convenient retail location. A volume monitor monitors the volume of clean natural gas in the in the semi-tractor trailer and transmits this information to the central filling location, which may dispense a replacement semi-tractor trailer upon the volume of clean natural gas reaching a pre-determined threshold and retrieve the spent semi-tractor trailer in one trip.

Abstract: Applicant provides a novel tank and trailer assembly adapted to receive fluids, including frac fluids therein, at a wellsite. The frac tank of the tank/trailer assembly is comprised of a fabric composite material rather than steel. This makes the frac tank lighter and easier to haul (empty) over the highway. The frac tank and trailer assembly disclosed may even be hauled with a pickup truck and may use a gooseneck or fifth wheel connection.

Abstract: A handrail assembly for a tank trailer and a yoke assembly for the same. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, sometimes, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior wall of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.

Abstract: The present invention discloses a tank trailer for transporting flowable material. The tank trailer includes a low-profile tank having a rear section, a front section, and a transitional section. The transitional section connects the rear section and the front section such that flowable material can flow among the sections. The rear section has a rear circumference and a rear center of gravity. The front section has a front circumference and a front center of gravity. The front circumference is smaller than the rear circumference, and the rear center of gravity is lower than the front center of gravity. The sections have tops that are collinearly aligned. The front section and the transitional section are frameless underneath. The tank trailer also includes a trailer suspension operatively connected to the rear section.

Abstract: The present invention discloses a tank trailer for transporting flowable material. The tank trailer includes a low-profile tank having a rear section, a front section, and a transitional section. The transitional section connects the rear section and the front section such that flowable material can flow among the sections. The rear section has a rear circumference and a rear center of gravity. The front section has a front circumference and a front center of gravity. The front circumference is smaller than the rear circumference, and the rear center of gravity is lower than the front center of gravity. The front section and the transitional section are frameless. The tank trailer also includes a trailer suspension operatively connected to the rear section.

Abstract: An aerodynamically-shaped fuel tank is provided for a refrigeration unit mounted on the forward end of a truck body. The fuel tank includes a cylindrical main body portion having forward and rearward ends. An aerodynamically-shaped nose portion extends forwardly and upwardly from the forward end of the main body portion. An aerodynamically-shaped tail portion extends rearwardly and upwardly from the rearward end of the main body portion.

Abstract: A transformer oil holding assembly for holding transformer oil. The transformer oil holding assembly includes a tank subassembly with one or more tanks for containing the transformer oil, the tank subassembly having a lower exterior surface adapted for engagement with a ground surface, and one or more sets of wheels for at least partially supporting the tank subassembly, each set of wheels being movable between a lowered position and a raised position, a suspension subassembly mounted to the tank subassembly, and one or more stop subassemblies for at least partially maintaining the set of wheels in the lowered position. Each stop subassembly includes a stop lever movable between an engageable condition, in which a stop element is engageable with the suspension subassembly to maintain the set of wheels in the lowered position, and a disengaged condition, in which the stop element is disengaged from the suspension subassembly.

Abstract: A handrail assembly for a tank trailer and a yoke assembly for the same. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, sometimes, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior wall of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.

Abstract: A fracture tank for use in oil fields and the like that is readily adaptable for manipulation in hilly and muddy terrain by being pushed by a bulldozer or similar piece of equipment. The undercarriage of the fracture tank is encased tapered skid plates to enhance the support area, while accommodating the movement of muddy or loose soil therethrough, while the fracture tank is slid over the terrain. The formation of skid plates preclude the compacting of mud and dirt within the undercarriage as in the prior art. The fracture tank is further provided with a strengthened rear bumper assembly and wheel spring hangers to allow for forceful movement when the rear wheels of the tank are frozen or compacted with dirt and mud to a point that they are substantially immovable. The fracture tank is further provided with a purging system consisting of an inlet spray tubing and an outlet drainage. Additionally, tubing is provided for conveying heated gas within the interior of the tank and venting the same out of the top.

Abstract: A liquid storage tank includes a vessel comprising sidewalls, end walls, a floor and a roof that define a closed interior cavity within the vessel, with at least a first of the sidewalls of the vessel having a multi-walled construction comprising an interior wall and an interior wall. The tank further comprises a manway assembly in the first sidewall. The manway assembly comprises exterior and interior openings and exterior and interior doors for closing the exterior and interior openings, respectively. The exterior and interior openings and the exterior and interior doors are arranged relative to each other and the interior door is sufficiently small so that while the exterior door is open the interior door can be opened by pivoting the interior door into the exterior opening.

Abstract: Applicant provides a novel tank and trailer assembly adapted to receive fluids, including frac fluids therein, at a wellsite. The frac tank of the tank/trailer assembly is comprised of a fabric composite material rather than steel. This makes the frac tank lighter and easier to haul (empty) over the highway. The frac tank and trailer assembly disclosed may even be hauled with a pickup truck and may use a gooseneck or fifth wheel connection.

Abstract: A composite wall structure formed from a plurality of layers. The composite wall structure can be used to form a composite storage tank having a tank cavity and a longitudinal axis. A composite tank trailer can be formed using the composite tank, a platform structure and a suspension and wheel assembly.

Abstract: A portable tank includes a tank interior defined by a plurality of panels, with the floor panel supported by a floor support structure. The floor support structure includes side channels with cross members connecting the side channels. A mid floor beam is received in notches formed in some of the cross members, and a rear floor beam is received in notches formed in different cross members. The mid floor beam and the rear floor beam do not span the entire length of the tank. There are cross members with smooth sided upper support surfaces in front of and behind the mid floor beam, and cross members with smooth sided upper support surfaces in front of the rear floor beam.

Abstract: A mobile fluid storage tank has a tank body with front, rear, and main body sections. A hitch structure is located beneath the front section and is supported by a first swing arm assembly. Rear support wheels are located beneath the rear section and are supported by a second swing arm assembly. A support frame extends along a bottom side of the main body section. The swing arm assemblies are moveable by air bag actuators between raised and lowered positions. The air bag actuators are operable to move the tank body between a lowered field position in which the support frame rests on the ground, and a raised transport position in which the support frame is supported above the ground by the hitch structure and the rear wheels. Pedestals are used to lock the swing arm assemblies in their transport positions when the air bag actuators are deflated.

Abstract: A fuel tank trailer includes a fuel tank defining a first containment region, a trailer having a bed supporting the fuel tank, and a secondary containment wall surrounding the fuel tank on the trailer providing an open second containment region for collection of any fuel leaking from the first containment region of the fuel tank and that is open for visual inspection to detect leakage of the fuel from the first containment region of the tank. The height of the secondary containment wall is sufficiently high to contain substantially an entire content of the fuel tank within a third combined containment region defined by the first and second containment regions and sufficiently low so as to permit visual inspection of the fuel tank.

Abstract: A saddle frame for a pneumatic bulk trailer includes first and second longitudinal saddle plates and at least one transverse support plate. Each of the saddle plates includes a front end, a rear end, an inner side, a generally arcuate upper edge, and a lower edge having at least three portions. Inwardly-directed edge flanges are formed at each portion of the lower edges. The transverse support plate extends between the inner sides of the saddle plates and is supported on an edge flange of each saddle plate. The upper edges of the saddle plates define support surfaces for engaging a pneumatic vessel of the pneumatic bulk trailer. The saddle plates are configured to be coupled to a front chassis frame and a rear chassis frame of the pneumatic bulk trailer.

Abstract: A flexible fluid storage system for holding large volumes of fluid and a process and apparatus for the handling and transportation of the flexible storage system is provided. The flexible storage system includes a main storage bag with an attachment apron with fingers, a ground sheet, a lay flat tube for fluid circulation, a pressure release port, and fill/drain ports. The flexible storage system is configured for attachment to a trailer and reel system such that the flexible storage system can be mechanically rolled onto or off of a reel on a semi-truck trailer bed for easy transportation, deployment, and storage of the flexible storage system.

Abstract: A composite wall structure formed from a plurality of layers. The composite wall structure can be used to form a composite storage tank having a tank cavity and a longitudinal axis. A composite tank trailer can be formed using the composite tank, a platform structure and a suspension and wheel assembly.

Abstract: A frac tank, configured for containerized handling, stacking and shipping in container cargo stacks, includes rear over-the-road axle and wheel support, a rear adapter for selectively exposing the rear wheels to enable mobile transport with a fifth-wheel equipped vehicle, and a front adapter for selectively exposing elements at the front of the tank during on-site use of the tank.

Abstract: A fuel tank trailer includes a fuel tank defining a first containment region, a trailer having a bed supporting the fuel tank, and a secondary containment wall surrounding the fuel tank on the trailer providing an open second containment region for collection of any fuel leaking from the first containment region of the fuel tank and that is open for visual inspection to detect leakage of the fuel from the first containment region of the tank. The height of the secondary containment wall is sufficiently high to contain substantially an entire content of the fuel tank within a third combined containment region defined by the first and second containment regions and sufficiently low so as to permit visual inspection of the fuel tank.

Abstract: A tank trailer to transport flowable material may include a frame. a tank to hold the flowable material connected to the frame, and the tank may include a first section, a second section connected to the first section and a third section connected to the second section. The first section may include a first diameter and the third section may include a second diameter. The second section may include a decreasing diameter to connect the first section and to connect the third section. The decreasing diameter may include a inclined surface, and the second portion may include an inclined side surface. The second portion may include an inclined bottom surface, and the tank trailer may include a convex front wall. The tank trailer may include a convex back wall, and the tank trailer may include a rib. The tank trailer may include a king pin.

Abstract: The present invention discloses a tank trailer for transporting flowable material. The tank trailer includes a low-profile tank having a rear section, a front section, and a transitional section. The transitional section connects the rear section and the front section such that flowable material can flow among the sections. The rear section has a rear circumference and a rear center of gravity. The front section has a front circumference and a front center of gravity. The front circumference is smaller than the rear circumference, and the rear center of gravity is lower than the front center of gravity. The front section and the transitional section are frameless. The tank trailer also includes a trailer suspension operatively connected to the rear section.

Abstract: A mobile fluid storage tank has a tank body with front, rear, and main body sections. A hitch structure is located beneath the front section and is supported by a first swing arm assembly. Rear support wheels are located beneath the rear section and are supported by a second swing arm assembly. A support frame extends along a bottom side of the main body section. The swing arm assemblies are moveable by air bag actuators between raised and lowered positions. The air bag actuators are operable to move the tank body between a lowered field position in which the support frame rests on the ground, and a raised transport position in which the support frame is supported above the ground by the hitch structure and the rear wheels. Pedestals are used to lock the swing arm assemblies in their transport positions when the air bag actuators are deflated.

Abstract: A fuel tank trailer has a fuel tank supported on the bed of the trailer, and a secondary containment wall surrounding the fuel tank to provide an open secondary containment region. A drain valve controls the flow of fuel and water collecting in the secondary containment region. A fuel separation filter separates the fuel from any water draining from the secondary containment region.

Abstract: Embodiments provide a fluid storage tank trailer including a base including a set of rear wheels, a tank supported by the base, the base including a set of skids adapted to engage the ground forward of the rear wheels when the trailer is not connected to a tow vehicle, the skids being adapted to support the tank bottom in relation to the ground, a forward frame extending from generally beneath the tank to the front end, the forward frame including a nose bar at the front end, the forward frame being adapted to be towed by a tow vehicle, a forward platform elevated above the forward frame, a first forward access ladder extending from the forward platform to the first side, and a second forward access ladder extending from the forward platform to the second side.

Abstract: Embodiments provide a fluid storage tank trailer including a base including a set of rear wheels, a tank supported by the base, the base including a set of skids adapted to engage the ground forward of the rear wheels when the trailer is not connected to a tow vehicle, the skids being adapted to support the tank bottom in relation to the ground, a forward frame adapted to be towed by a tow vehicle, a forward platform elevated above the forward frame, the forward platform having a first end adjacent a first front corner, the forward platform having a second end adjacent a second front corner, the forward platform defining a walkway between the first end and the second end, a first ladder extending along a first vertical axis parallel to the first front corner, the first ladder extending from the first end of the forward platform downward to the forward frame; a second ladder extending along a second vertical axis parallel to the second front corner, the second ladder extending from the second end of the forwar

Abstract: A trailer has a fluid storage and supply container supported on the bed of the trailer, and a containment wall surrounding the fluid storage and supply container to provide an open containment region. A drain valve controls the flow of fluid collecting in the containment region. A filter separates the fluid from any water draining from the containment region.

Abstract: Embodiments provide a fluid storage tank trailer including a base including a set of rear wheels, a tank supported by the base, the base including a set of skids adapted to engage the ground forward of the rear wheels when the trailer is not connected to a tow vehicle, the skids being adapted to support the tank bottom in relation to the ground, a forward frame extending from generally beneath the tank to the front end, the forward frame including a nose bar at the front end, the forward frame being adapted to be towed by a tow vehicle, a forward platform elevated above the forward frame, a first forward access ladder extending from the forward platform to the first side, and a second forward access ladder extending from the forward platform to the second side.