The Issues of Life Extension of Seismic Isolation System of Circular Tanks for Storage of Liquefied Petroleum Gases

The aim is to determine the possibility of extending the life of rubber-metal dampeners of seismic isolation of spherical tanks for the storage of liquefied petroleum gas.There is offered a technique including accelerated aging dampeners for extended life, accelerated life tests and validation of their basic functional characteristics: creep, strength and stiffness.An example of application of the proposed method showing the possibility of extending the life of dampeners of spherical tanks seismic isolation up to 25 years was determined.