초록 ▼

A storage tank system for storing fluids in an environmentally safe container which includes a rigid external primary tank having a flexible protective secondary inner tank positioned within the tank and drawn, by negative pressure, into contact with the internal walls of the rigid external tank. A

A storage tank system for storing fluids in an environmentally safe container which includes a rigid external primary tank having a flexible protective secondary inner tank positioned within the tank and drawn, by negative pressure, into contact with the internal walls of the rigid external tank. A continuous monitoring system is connected into, and made a part of, the portion of the system used to evacuate the space between the inner and outer tanks, so that any leakage or loss of integrity which is developed in the liner can be immediately detected at any time.

대표청구항 ▼

A fluid storage tank system comprising: an external tank having an inner side and an outer side; a flexible inner tank positioned within and adjacent said external tank and defining with said external tank, a space therebetween; said flexible inner tank having a geometric configuration complementary

A fluid storage tank system comprising: an external tank having an inner side and an outer side; a flexible inner tank positioned within and adjacent said external tank and defining with said external tank, a space therebetween; said flexible inner tank having a geometric configuration complementary to that of said external tank, and said inner tank having an interior and an exterior; registering access manholes in the inner and external tanks facilitating access to the interior of the inner tank so that said access manholes are registered; means for sealing the inner and external tanks to each other at the registering access manholes with a seal adequate to impart fluid tight integrity to the space between the inner and external tanks; means for removably closing said manholes and facilitating the selective opening of the registered manholes without affecting the integrity of the seal of the tanks to each other at the registering access manholes; means for reducing the pressure in said space between the tanks to a negative pressure below atmospheric pressure; and means for periodically automatically evacuating such space to restore the negative pressure therein to a predetermined level.