Patent ID: 7171994
Filing Date: 2007-02-06
Classification: B65D

Abstract:
1. A spillage containment system for use in combination with an underground tank assembly, the underground tank assembly comprising a storage tank and a tank access conduit, the tank access conduit enabling access to the storage tank, the spillage containment system comprising, in combination: a primary spillage containment assembly, the primary spillage containment assembly comprising an extension conduit, a primary basal platform, a primary containment wall, and a conduit-accessing lid, the primary containment wall comprising an inner wall surface, an outer wall surface, a superior wall end, and an inferior wall end, the primary basal platform comprising a platform conduit and wall-support structure, the extension conduit being in communication with the platform conduit, the inner wall surface being substantially concentric about the extension conduit, the conduit-accessing lid being cooperatively associated with the primary containment wall for enabling a user to selectively access the extension conduit via the superior wall end, the inner wall surface, the wall-support structure and the conduit-accessing lid forming a primary spillage containment chamber adjacent the extension conduit; a secondary spillage containment assembly, the secondary spillage containment assembly comprising a secondary basal platform, a secondary containment wall, and a containment-accessing lid, the secondary containment wall comprising an inner pod surface, an outer pod surface, a superior pod end, and an inferior pod end, the secondary basal platform comprising a pod conduit and pod-support structure, the inner pod surface being substantially concentric about the extension conduit, the containment-accessing lid being cooperatively associated with the secondary containment wall for enabling the user to selectively access the primary spillage containment assembly via the superior pod end, the inner pod surface, the pod-support structure and the containment-accessing lid thus forming a secondary spillage containment chamber adjacent the primary spillage containment assembly, the platform conduit communicating the extension conduit with the pod conduit, the pod conduit communicating the platform conduit with the tank access conduit thus enabling tank access via the primary and secondary spillage containment assemblies; and a primary manhole assembly, the primary manhole assembly comprising a manhole lid and a skirt assembly, the manhole lid comprising a superior lid surface and an inferior lid surface, the skirt assembly comprising a double-walled, lid-supporting skirt, the lid-supporting skirt comprising an inner isolation wall, an outer isolation wall, a superior skirt end, and an inferior skirt end, the inner isolation wall defining a pod-surrounding, inner manhole cavity and a moisture-directing, outer manhole channel, the outer manhole channel extending intermediate the inner isolation wall and the outer isolation wall, the inner isolation wall extending intermediate the secondary spillage containment assembly and the manhole lid for supporting the manhole lid at the inferior lid surface in superior adjacency to the superior pod end, the outer manhole channel directing moisture from the superior lid surface to the inferior skirt end thus isolating the secondary spillage containment assembly from channel-directed moisture.