초록 ▼

A spill control device for underground liquid storage tanks having an upwardly extending fill pipe. The control device comprises a steel, epoxy coated, liquid collecting spill tank having a riser tube that extends upward through the tank bottom. A circular seal ring fits about the upper end of the r

A spill control device for underground liquid storage tanks having an upwardly extending fill pipe. The control device comprises a steel, epoxy coated, liquid collecting spill tank having a riser tube that extends upward through the tank bottom. A circular seal ring fits about the upper end of the riser tube and about the outer wall of a fill pipe received through the riser tube. A clamp compresses the seal about both the riser tube and fill pipe. A liquid impermeable cover is provided which covers the access opening in the top of the spill tank. A first basin surrounds the cover for channeling precipitation, and other liquids impinging the cover, away from the spill tank. A valve is disposed on the fill pipe for selectively directing liquids discharged into the spill tank into the storage tank. A second basin surrounds the spill tank for recovering liquids discharged from the spill tank during a filling operation.

대표청구항 ▼

A spill control device for underground liquid storage tanks used in the storage of toxic or flammable materials, comprising: a liquid impermeable spill collecting tank having a top and a bottom, said top having an access opening thereat that provides sufficient clearance for the passage of a fill ho

A spill control device for underground liquid storage tanks used in the storage of toxic or flammable materials, comprising: a liquid impermeable spill collecting tank having a top and a bottom, said top having an access opening thereat that provides sufficient clearance for the passage of a fill hose therethrough, said tank having a pipe aperture through said bottom of a dimension sufficient to provide the close reception of a liquid storage tank fill pipe therethrough; means for sealing said tank bottom about a liquid storage tank fill pipe received through said pipe aperture to prevent fluid passage through said pipe aperture, whereby said tank forms a liquid impermeable container about the upper end of a liquid storage tank fill pipe when assembled thereon to prevent liquid contaminants from entering the ground surrounding said pipe; a substantially liquid impermeable cover adapted for extending over and substantially covering said access opening; and a first basin at least partially surrounding said spill collecting tank and said liquid impermeable cover for channeling liquids impinging said cover away from said spill collecting tank.