Patent ID: 6257437
Filing Date: 2001-07-10
Classification: B65D

Abstract:
An above ground storage tank for holding a combustible material and for supporting equipment comprising:a) an inner tank for containment of combustible material, said inner tank having a bottom wall, opposed side walls, opposed end walls and a top wall, all of which are formed as a metallic skin;a plurality of inner tank bottom wall stiffening members spaced along said bottom wall and extending substantially completely across said bottom wall;a plurality of inner tank top wall stiffening members spaced along said top wall and extending substantially completely across said top wall;b) an outer tank, enclosing said inner tank, said outer tank having a bottom wall, opposed side walls, opposed end walls and a top wall, all of which are formed of a metallic skin, said top wall having an inner and outer surface;a plurality of outer tank top wall stiffening members spaced along the outer or inner surface of said top wall and extending horizontally substantially completely across said top wall;a plurality of outer tank side wall stiffening members spaced along the inner or outer surface of each said outer tank side walls, in alignment with outer tank top wall stiffening members, and extending vertically substantially completely along said side walls;c) supporting means disposed between the bottom wall of said inner tank and the bottom wall of said outer tank supporting said inner tank so as to provide an insulating gap between said inner tank and said outer tank;d) optionally a barrier insulation filling the insulating gap between said inner tank and said outer tank; ande) means extending along the outer surface of said outer tank top wall for supporting equipment on said above ground storage tank.