This study compares qualitative risk analyses of compressed hydrogen gas(GH_(2))and liquid hydrogen(LH_(2))fuel gas supply systems(FGSSs)for eco-friendly marine vessels.Using hazard identification(HAZID)and hazard and...This study compares qualitative risk analyses of compressed hydrogen gas(GH_(2))and liquid hydrogen(LH_(2))fuel gas supply systems(FGSSs)for eco-friendly marine vessels.Using hazard identification(HAZID)and hazard and operability(HAZOP)methodologies,the study systematically identifies and compares the unique risks and safety strategies for GH_(2) and LH_(2) FGSS.For GH_(2)-FGSS,HAZID identifies 22 hazards,with one unacceptable risk related to potential explosions from high-pressure hydrogen accumulation due to ventilation failure.HAZOP identifies 27 hazards,all categorized as acceptable or ALARP.Recommended safety measures include pressure protection devices,real-time alarms,and enhanced piping durability.For LH_(2)-FGSS,HAZID identifies 38 hazards without any unacceptable risks,though cryogenic icing and overpressure remain significant concerns.HAZOP reveals 43 hazards,with one unacceptable risk involving thermal contraction and piping damage from repeated operations,posing fire hazards.Suggested mitigations include improved cooling and purge gas procedures,along with rigorous insulation management.Primary differences in safety management focus on high explosion risk of GH_(2)-FGSS from high-pressure storage and the piping damage risk of LH_(2)-FGSS from icing and thermal contraction.To enhance risk management for each system,future research implements an operational simulation-based quantitative risk assessment.This study provides foundational safety strategies and guidelines for future vessels,supporting the adoption of eco-friendly fuels in the maritime industry.展开更多
基金supported by Korea Institute of Marine Science&Technology Promotion(KIMST)funded by the Ministry of Oceans and Fisheries(20200456)supported by principal research programs funded by the Korea Institute Machinery and Materials(KIMM)of Republic of Korea(Development of the core equipment for liquid hydrogen supply systems,NK254E).
文摘This study compares qualitative risk analyses of compressed hydrogen gas(GH_(2))and liquid hydrogen(LH_(2))fuel gas supply systems(FGSSs)for eco-friendly marine vessels.Using hazard identification(HAZID)and hazard and operability(HAZOP)methodologies,the study systematically identifies and compares the unique risks and safety strategies for GH_(2) and LH_(2) FGSS.For GH_(2)-FGSS,HAZID identifies 22 hazards,with one unacceptable risk related to potential explosions from high-pressure hydrogen accumulation due to ventilation failure.HAZOP identifies 27 hazards,all categorized as acceptable or ALARP.Recommended safety measures include pressure protection devices,real-time alarms,and enhanced piping durability.For LH_(2)-FGSS,HAZID identifies 38 hazards without any unacceptable risks,though cryogenic icing and overpressure remain significant concerns.HAZOP reveals 43 hazards,with one unacceptable risk involving thermal contraction and piping damage from repeated operations,posing fire hazards.Suggested mitigations include improved cooling and purge gas procedures,along with rigorous insulation management.Primary differences in safety management focus on high explosion risk of GH_(2)-FGSS from high-pressure storage and the piping damage risk of LH_(2)-FGSS from icing and thermal contraction.To enhance risk management for each system,future research implements an operational simulation-based quantitative risk assessment.This study provides foundational safety strategies and guidelines for future vessels,supporting the adoption of eco-friendly fuels in the maritime industry.
