An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected. A gusset is formed in a base part of the triangle or in a lower base part of the trapezoid by folding the synthetic resin film inward. Flexible reinforcing covers having a triangle or trapezoid shape in accordance with the triangle or trapezoid shape of the bag are laminated respectively on one surface and the other surface of the bag. A short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag.

An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected. A gusset is formed in a base part of the triangle or in a lower base part of the trapezoid by folding the synthetic resin film inward. Flexible reinforcing covers having a triangle or trapezoid shape in accordance with the triangle or trapezoid shape of the bag are laminated respectively on one surface and the other surface of the bag. A short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag.

A dual-purpose tank container is provided, designed for transporting unrefined or refined fluid within the same internal space, eliminating unproductive deadheading. The tank container includes an inner tank in a frame, and outer insulation shell, the tank being equipped with at least one diaphragm so that a fluid, for example crude oil or diesel fuel, can occupy inner space without risk of contamination from a residual fluid. The high viscosity unrefined fluid can be almost completely drained using fluid draining channels present on the diaphragm surface, increasing transportation economy and eliminating any residual fluid pockets. At least one inlet present on the upper tank body supplies a solvent vapor/fluid to condition the space between the diaphragm and the tank wall, thereby preventing sticking of the diaphragm to the tank inner surface.

A dual-purpose tank container is provided, designed for transporting unrefined or refined fluid within the same internal space, eliminating unproductive deadheading. The tank container includes an inner tank in a frame, and outer insulation shell, the tank being equipped with at least one diaphragm so that a fluid, for example crude oil or diesel fuel, can occupy inner space without risk of contamination from a residual fluid. The high viscosity unrefined fluid can be almost completely drained using fluid draining channels present on the diaphragm surface, increasing transportation economy and eliminating any residual fluid pockets. At least one inlet present on the upper tank body supplies a solvent vapor/fluid to condition the space between the diaphragm and the tank wall, thereby preventing sticking of the diaphragm to the tank inner surface.

A dual-purpose tank container is provided, designed for transporting unrefined or refined fluid within the same internal space, eliminating unproductive deadheading. The tank container includes an inner tank in a frame, and outer insulation shell, the tank being equipped with at least one diaphragm so that a fluid, for example crude oil or diesel fuel, can occupy inner space without risk of contamination from a residual fluid. The high viscosity unrefined fluid can be almost completely drained using fluid draining channels present on the diaphragm surface, increasing transportation economy and eliminating any residual fluid pockets. At least one inlet present on the upper tank body supplies a solvent vapor/fluid to condition the space between the diaphragm and the tank wall, thereby preventing sticking of the diaphragm to the tank inner surface.

A dual-purpose tank container is provided, designed for transporting unrefined or refined fluid within the same internal space, eliminating unproductive deadheading. The tank container includes an inner tank in a frame, and outer insulation shell, the tank being equipped with at least one diaphragm so that a fluid, for example crude oil or diesel fuel, can occupy inner space without risk of contamination from a residual fluid. The high viscosity unrefined fluid can be almost completely drained using fluid draining channels present on the diaphragm surface, increasing transportation economy and eliminating any residual fluid pockets. At least one inlet present on the upper tank body supplies a solvent vapor/fluid to condition the space between the diaphragm and the tank wall, thereby preventing sticking of the diaphragm to the tank inner surface.

Systems and methods are provided for safely and efficiently transporting granular material. In one embodiment, a container for granular material is provided. The container can have a top plate and a bottom plate that are coupled to one another via one or more high-strength fabric sleeves. The bottom plate can include a discharge valve for discharging the granular material in the container. The container can also include a discharge bladder that, when inflated, biases granular material within the container toward the discharge valve. The container can also include at least one barrier positioned proximate the discharge valve such that the barrier prevents at least a portion of the discharge bladder from entering the discharge valve. The barrier can allow sand or other granular material to pass through the barrier and exit through the discharge valve.

A tank assembly for receiving liquids comprises a tank body. The tank body includes a tank wall defining an enclosed tank cavity. The tank body also includes a manhole lid attached to the tank wall and movable from a closed position covering a manhole in the tank body to an open position uncovering the manhole. A liner includes a flexible liner wall defining an enclosed liner cavity. An opening is formed in the liner wall to permit liquid to be introduced into the liner cavity. The liner also includes a fitting secured to the liner wall at the opening in the liner wall. A first end of a hose is attached to the fitting for conducting fluid to the liner cavity. A valve is attached to a second end of the hose. The valve and the second end of the hose are releasably attached to the manhole lid.

A tank assembly for receiving liquids comprises a tank body. The tank body includes a tank wall defining an enclosed tank cavity. The tank body also includes a manhole lid attached to the tank wall and movable from a closed position covering a manhole in the tank body to an open position uncovering the manhole. A liner includes a flexible liner wall defining an enclosed liner cavity. An opening is formed in the liner wall to permit liquid to be introduced into the liner cavity. The liner also includes a fitting secured to the liner wall at the opening in the liner wall. A first end of a hose is attached to the fitting for conducting fluid to the liner cavity. A valve is attached to a second end of the hose. The valve and the second end of the hose are releasably attached to the manhole lid.

A containment vessel bladder for retaining material to be stored within a containment vessel. The bladder comprises a flexible enclosure and a drain facilitating element. The enclosure has a sealed interior, a floor portion connected to an enclosed top by one or more wall portions, and an opening for the delivery of material to the sealed interior. The drain facilitating element is positioned on the floor portion the enclosure and is expandable from a deflated position to an expanded position. When deflated the drain facilitating element is foldable with the enclosure to facilitate storage and transport of the containment vessel bladder. When expanded the drain facilitating element has one or more sloped surfaces aiding in the direction of material stored within the sealed interior toward a pre-determined location within the sealed interior to help facilitate the removal of material from the containment vessel bladder.