| 摘要 |
A system for sealing a liner about an internal member in a structural envelope, such as a liquid storage tank. A mechanical seal is located betwee n the liner's first edge and the structural envelope and forms secondary containment between the structural envelope and the liner. A plate sealably attaches outside the outer perimeter of the mechanical seal to either the inner or outer surface of the structural envelope and forms a continuous envelope extension from the liner to the discontinuity. The plate provides secondary containment between the continuous envelope extension and the structural envelope. Tertiary containment is achievable through use of a liner boot, th e outer edge attached to the liner outside the perimeter of the mechanical sea l and the inner edge mechanically sealed to the discontinuity.
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