초록 ▼

A method of lifting storage tanks by using pressurized bags and support members. Lifting the tank allows for visual inspection under the tank for corrosion to prevent leakage of environmentally hazardous chemicals stored in the tank. The lifting bags are placed under the tank, inflated, and support

A method of lifting storage tanks by using pressurized bags and support members. Lifting the tank allows for visual inspection under the tank for corrosion to prevent leakage of environmentally hazardous chemicals stored in the tank. The lifting bags are placed under the tank, inflated, and support timbers placed under the raised tank. The bags are then deflated allowing the tank to rest on the support timbers. The deflated bags are raised by placing support timbers under the bags. The bags are again pressurized further raising the tank. The steps are repeated until the tank is lifted to the desired height. Ground suction is broken by raising one side of the tank with the lifting bags, placing supports as far as possible under the tank rim and depressurizing the bags to rock the other side of the tank off the ground. A fulcrum method is also applied to use the partial weight of the tank as a leverage force to alternately raise opposite sides of the tank.

대표청구항 ▼

A method of lifting a tank which comprises the steps of: (a) removing the ground underneath the tank below the rim of the tank; (b) sliding at least one unpressurized bag under the tank rim, the unpressurized bag resting on the ground; (c) lifting the side of the tank by pressurizing the bag to brea

A method of lifting a tank which comprises the steps of: (a) removing the ground underneath the tank below the rim of the tank; (b) sliding at least one unpressurized bag under the tank rim, the unpressurized bag resting on the ground; (c) lifting the side of the tank by pressurizing the bag to break ground suction under the side of the tank; (d) placing a plurality of support members under the tank rim, each support member being more than one-fourth the distance around the tank circumference from the position of the bag; and (e) lowering the side of the tank by depressurizing the bag allowing the tank to rock on the support members, thereby lifting the side of the tank opposite the bag and thereby breaking the remaining ground suction.