Author(s)

SANGHYUN PARK, HYONJEONG NOH, SU-GIL CHO, KWANGU KANG

Abstract

The CO₂ intermediate storage terminal play an important role in transporting the CO₂ transported through the CO₂ carrier to the subsea pipeline. In the case of large-scale CO₂ intermediate storage terminal, there are inherent hazard factors, which can lead to significant property loss and human damage in the event of an accident. In this regard, in order to ensure the safety of CO₂ intermediate storage terminal, the internationally certified safety assessment technique should be introduced. In this research, although the CO₂ intermediate storage terminal is composed of various subsystems, we only consider CO₂ storage tank among various subsystems. Since the CO₂ storage tank stores a large amount of CO₂, when the tank itself is ruptured, overpressure, low pressure, overcharging, etc., it may cause great damage due to a large amount of CO₂ leakage. We perform the Layer of Protection Analysis (LOPA) for CO₂ storage tank so as to achieve the functional safety required by the international standards. The LOPA provides the results of quantitative analysis whether the safety system about the hazard scenarios can ensure the risk within an acceptable risk level. In this research, through the LOPA of CO₂ storage tank, we evaluate the safety of conventional system and identify the required safety level for the additional safety system.

Keywords

CO₂ intermediate storage terminal, CO₂ storage tank, Layer of Protection Analysis (LOPA), Hazard and Operability study (HAZOP)