초록 ▼

A secondary containment system which may be manufactured in a factory, shipped and installed in a reasonably low cost and fully usable manner. In one embodiment, a large membrane of material, completely lines a collection and containment pit along with radiating trenches which drain into the collect

A secondary containment system which may be manufactured in a factory, shipped and installed in a reasonably low cost and fully usable manner. In one embodiment, a large membrane of material, completely lines a collection and containment pit along with radiating trenches which drain into the collection pit. There is substantial amount of membrane bulk which enables it to bunch in the corners and to provide slack which conforms to irregularities on the earthen walls and floor of the pit. Thus, localized stresses do not occur at places where the membrane bridges protections formed on the walls, in the corners, or the like. In another embodiment, the membrane covers a tank in the pit and drapes down to form deep areas where liquids may collect. A perimeter steel cable surrounds the hole. The membrane is attached to this cable so that the membrane is mechanically strong enough to meet the shoring requirements of the various occupational safety laws. Plastic zippers are used to close and to join the various membrane sections. A cement or sealent may be placed in confronting surface areas of the zipper to preserve the integrity of its seal over the long years that an installation may be expected to remain in the ground.

대표청구항 ▼

A secondary containment system comprising a sheet of membrane material which is large enough to line at least a portion of a collection and containment pit along with trenches radiating therefrom, said trenches being graded to drain into the pit, there being a substantial amount of membrane bulk whi

A secondary containment system comprising a sheet of membrane material which is large enough to line at least a portion of a collection and containment pit along with trenches radiating therefrom, said trenches being graded to drain into the pit, there being a substantial amount of membrane bulk which enables it to bunch in at least an area of said pit and to provide sufficient slack to conform to irregularities on the walls and floor of the lined portion of the pit and trenches whereby localized stresses do not occur at places where the membrane bridges projections formed by the irregularities, corners, or the like, anchoring means independent of said membrane and surrounding at least part of the perimeter of said pit, means for attaching said anchoring means to the membrane to secure it and thus provide a shoring for walls of the pit by restraining movement of said membrane if there should be a cave-in of the pit for a period of time which is at least long enough for workers to eacape if there should be a cave-in; and means for closing and joining at least some sections of said membranes to preserve the integrity of a seal formed thereat in order to form a secondary containment enclosure.