STPA 위험분석과 재해경감활동을 적용한 수소충전소의 운영안전성 강화 방안 연구

Abstract

The demand for eco-friendly energy has increased to overcome the global warming crisis. Hydrogen is emerging as a new energy source with eco-friendliness and efficiency. The government is pushing to expand the supply of hydrogen refueling stations in the transportation sector to achieve a "Leading Country in the Hydrogen Industry." However, due to various reasons, the expansion of the supply of hydrogen refueling stations is not proceeding as planned. Accordingly, a plan to strengthen the operational safety of hydrogen refueling stations, one of the factors hindering the expansion of the build of hydrogen refueling stations, was studied. If the previous studies have focused on the pre-installation stage of hydrogen refueling stations, the risk targets of this study have been expanded to possible risks from the pre-installation stage to the operation stage over time. In other words, risk factors were divided into 'Acceptable Risk Areas' and 'Allowable Risk Areas'. In the two areas, residual risk factors that may occur during the operation of hydrogen refueling stations were derived and applied to STPA risk analysis and Business Continuity Management to compare how the risk area changes after the risk analysis ž evaluation ž processing. Among the seven representative risk scenarios that can occur during the operation of hydrogen refueling stations, three were risk-cause scenarios derived through STPA risk analysis. The results of applying seven risk scenarios to Business Continuity Management can be summarized in two ways. 1) The risk area of seven possible risk scenarios during the operation of hydrogen refueling stations has been reduced from ‘Allowable Risk Area’ to ‘Acceptable Risk Area’. 2) Seven risk scenarios were 'Reduced' or 'Transferred' as a result of applying Business Continuity Management. Therefore, the STPA risk analysis and Business Continuity Management risk analysis ž evaluation ž processing procedure could be presented as a model necessary to strengthen the operational safety of hydrogen refueling stations. If the Business Continuity Management model suitable for hydrogen refueling stations is developed through follow-up research in the future, it is expected that the supply of hydrogen refueling stations will be expanded quickly.