Abstract: A vessel for containing liquefied petroleum gas and a method for loading a semitrailer with a plurality of vessels is disclosed. The vessel may include a tank with an outside diameter that is greater than thirty inches and less than thirty-four inches. The tank may be configured to contain at least 119 water gallons, and may be further configured to contain liquefied petroleum gas.

Abstract: A tank cover hinge assembly for use with storage tanks is disclosed. The assembly may include a hinge member having a first surface that is configured to engage a collar of a tank, and a second surface that is configured to engage a lid. The hinge member may provide a coupling between the collar and the lid, and may be configured to prevent movement of the lid beyond a predetermined angle of opening with respect to an imaginary longitudinal axis of the tank.