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The bottom gates on the pneumatic hoppers connect to a hose attached to industrial facilities' storage tanks. Air is injected to fluidize the railcar contents for unloading. [5] The hopper car was developed in parallel with the development of automated handling of such commodities, including automated loading and unloading facilities.
Each unit of a double-stack car contains a single well; they often are constructed with three to five cars connected by articulated connectors. The intermediate connectors are supported by the centerplate of single trucks, often a 125-short-ton (112-long-ton; 113 t)-capacity truck but sometimes a 150-short-ton (134-long-ton; 136 t)-capacity one.
The pressure within the tank is 25 psi (170 kPa) or lower [3] [4] with a temperature below 20.27 K (−423.17 °F or −252.87 °C) and a boil-off rate of 0.3% to 0.6% per day [5] The tank is double walled like a vacuum flask with multi-layer insulation, with the valves and fittings enclosed in a cabinet at the lower side or end of the car.
A DOT-111 tank car, specification 111A100W1, constructed by fusion welding carbon steel.This car has a capacity of 30,110 US gallons (113,979 L; 25,071.8 imp gal), a test pressure of 100 psi (690 kPa), a tare weight of 65,000 pounds (29,500 kg) and a load limit of 198,000 pounds (89,800 kg).
American Railcar Industries (ARI) was formed in 1988 and grew in railcar repair as a result of acquiring business assets from ACF Industries. [4] At that time ARI manufactured components for railcars, and also provided painting, repair and fleet management services. By 1999, the company was manufacturing both hopper and tank cars.
About 60,000 pounds of a chemical used as both a fertilizer and an explosive is missing after likely disappearing during a rail trip from Wyoming to California last month, according to federal ...
A tank container, also known as ISO tank, is a specialized type of container designed to carry bulk liquids, such as chemicals, liquid hydrogen, gases and food grade products. Both hazardous and non hazardous products can be shipped in tank containers. A standard tank container is 20 feet (6.10 m) long, 8 feet (2.44 m) high and 8 feet (2.44 m ...
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.