“Double-wall cryogenic tanks” is a special tank project that includes Ethylene and C2+ doublewalled steel storage tanks. Tanks, which have reinforced concrete foundation and columns, have been designed as a seismically base-isolated and the superstructures have been isolated at the foundation level against earthquake effects. The seismic isolators have been designed and being manufactured by TİS Teknolojik İzolatör Sistemleri A.Ş. Information about the project and isolation system is presented at the table below.

Name of the produced devices

TİS Double Pendulum (TDP)

Project year


Total number of devices

160 (Str: 156, Prototype: 4)

Displacement capacity of the devices

±150 mm

Load bearing capacity of the devices

6500 / 7700 kN