Seismic Risk Reduction at Petrochemical and LNG Facilities: Main Results from INDEPTH Project

Abstract eng:
The INDEPTH Project (INnovative DEvices for seismic protection of PeTrocHemical facilities), partially funded by the European Commission (Contract EVG1-CT-2002-00065) during the 5th Framework Programme, studied, developed and applied innovative seismic isolation and/or dissipation devices to some of the critical structures present at petrochemical and LNG facilities. A cost-benefit analysis was also performed to evaluate the financial impact of the proposed applications. The project met its scope with an integrated approach, combining numerical analysis and experimental validation. Numerical analyses, with different levels of complexity, were performed for the selected structures (LNG tanks, cylindrical storage tanks and spheres) both with and without the seismic protection device. Experimental validation was also performed both on single devices and on scaled, real structures, providing data for calibration of the numerical analyses and codes. This paper focuses on solutions studied, developed and tested for seismic isolation and energy dissipation in the context of LNG and spherical tanks. The isolated solutions have been compared with non-isolated alternatives and with a conventional retrofit in the case of spheres.

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