Design of an LNG tank for accidental loads in Finland

Resumen

The first tank in Finland for storage of liquefied natural gas (LNG) is currently being built in the port of Pori. It is a full containment tank, capable for 30,000 m3. Two of the many load cases considered in the design correspond to postulated accidents that give rise to complex thermal-mechanical problems and are of especial interest in the Pori tank: the major leak event (in which the liquid at -168ºC contacts the concrete outer tank) and the external fire (with the tank being subjected to large thermal fluxes from a postulated fire). The paper describes the calculations conducted to verify that the design adopted satisfies the success criteria established for those events.