초록 ▼

A metal or fiberglass, liquid storage tank having a top wall or an auxiliary flange plate which projects beyond the tank side and end walls to support the tank to a base vault and provide a support surface for a cover which is cast in place to the tank. The primary tank is mounted within an open-top

A metal or fiberglass, liquid storage tank having a top wall or an auxiliary flange plate which projects beyond the tank side and end walls to support the tank to a base vault and provide a support surface for a cover which is cast in place to the tank. The primary tank is mounted within an open-topped, reinforced cast concrete base which includes an internal thermal liner, liquid impermeable membrane, cover seals, tank cradles and support legs which define secondary and tertiary containment spaces. Sloped interior walls direct liquid and/or condensation to a sump region and a siphon assembly. The cover is integrally bonded to the tank and supports a number of projecting fill, vent, extraction, inspection, and monitor/siphon standpipes. Chamfered and interlocking surfaces are formed at the cover to base joint and lift eyes facilitate cover and tank removal, alignment, and tank inspection. A spill containment collar mounts about the fill pipe and a drain pipe and overflow pipe direct spillage to the tank or a secondary storage space in the base.

대표청구항 ▼

[ What is claimed is:] [1.] Liquid containment apparatus comprising:(a) a base having a plurality of sidewalls which vertically project from a bottom wall to a circumferential rim to define an open cavity;(b) tank means having a plurality of walls and a top wall which define a primary storage space

[ What is claimed is:] [1.] Liquid containment apparatus comprising:(a) a base having a plurality of sidewalls which vertically project from a bottom wall to a circumferential rim to define an open cavity;(b) tank means having a plurality of walls and a top wall which define a primary storage space for containing a liquid and wherein said top wall is supported to said rim;(c) means for defining a secondary storage space between said tank means and the walls of said base; and(d) a cover which is aligned to and overlies said top wall and mounts to said rim to cover the open cavity.