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Propane Systems: LPG Truck Unloading Stations
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Truck delivery stations offer a perfect blend of safety and efficiency. These stations are designed for acceptance of both full transport trucks and smaller bobtail vehicles.

Fuel Delivery Station
Fuel Transfer

Bobtail
bobtail
up to 3,500 gallons

Transport
transport
up to 10,000 gallons

Railcar
railcar
up to 30,000 gallons

LP-gas is delivered to most consumers via truck and railcar. Almost all standby systems are equipped for trucks, while a minority also use rail. In general, a consumer will get a better buy on propane if purchased in transport or railcar quantities.

Truck Fuel Transfer Station

truck fuel transfer station

The location and construction of fuel transfer stations are important design factors. At LPG plants with more than 4,000 gallons total storage capacity, NFPA 58 requires emergency valves at transfer stations to allow quick closure. A "breakaway" feature is also required to protect plant piping in the event of a connected-truck pull away.

Trucks normally have power-take-off pumps to transfer product. Top-fitted railcars require the use of vapor compressors to "push" the liquid propane out and, on a secondary cycle, recover much of the remaining propane vapor.



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