Analysis of the environmental and economic performance of fishing vessels has received limited attention compared with other ship types despite their notable contribution to global greenhouse gas(GHG)emissions.This st...Analysis of the environmental and economic performance of fishing vessels has received limited attention compared with other ship types despite their notable contribution to global greenhouse gas(GHG)emissions.This study evaluates the carbon footprint(CF)and economic viability of a liquefied natural gas(LNG)-fueled fishing vessel,using real engine operation simulations to provide precise and dynamic evaluation of fuel consumption and GHG emissions.Operational profiles are obtained through the utilization of onboard monitoring systems,whereas engine performance is simulated using the 1D/0D AVL Boost^(TM)model.Life cycle assessment(LCA)is conducted to quantify the environmental impact,whereas life cycle cost assessment(LCCA)is performed to analyze the profitability of LNG as an alternative fuel.The potential impact of the future fuel price uncertainties is addressed using Monte Carlo simulations.The LCA findings indicate that LNG has the potential to reduce the CF of the vessel by 14%to 16%,in comparison to a diesel power system configuration that serves as the baseline scenario.The LCCA results further indicate that the total cost of an LNG-powered ship is lower by 9.5%-13.8%,depending on the share of LNG and pilot fuels.This finding highlights the potential of LNG to produce considerable environmental benefits while addressing economic challenges under diverse operational and fuel price conditions.展开更多
突发事件风险评估旨在为海上作业者识别危害提供依据,并将风险降至合理水平,以保护人们免受意外事故的影响。养殖工船在航行和作业时会面临恶劣自然条件的影响,不仅存在碰撞、搁浅等风险,同时还会因锚泊、养殖等工程作业活动而遭遇到更...突发事件风险评估旨在为海上作业者识别危害提供依据,并将风险降至合理水平,以保护人们免受意外事故的影响。养殖工船在航行和作业时会面临恶劣自然条件的影响,不仅存在碰撞、搁浅等风险,同时还会因锚泊、养殖等工程作业活动而遭遇到更多的突发事件,故需对其所面临的突发事件进行风险评估。该文以养殖工船为研究对象,首先疏理其特点;然后分析其在航行和作业全流程中可能出现的突发事件的种类、概率、原因、过程及严重程度;最终基于失效模式与影响分析(failure mode and effects analysis,FMEA)方法对突发事件进行风险评估并制成FMEA工作表,为应急决策及应急管理系统构建提供有价值的数据决策支持。展开更多
文摘Analysis of the environmental and economic performance of fishing vessels has received limited attention compared with other ship types despite their notable contribution to global greenhouse gas(GHG)emissions.This study evaluates the carbon footprint(CF)and economic viability of a liquefied natural gas(LNG)-fueled fishing vessel,using real engine operation simulations to provide precise and dynamic evaluation of fuel consumption and GHG emissions.Operational profiles are obtained through the utilization of onboard monitoring systems,whereas engine performance is simulated using the 1D/0D AVL Boost^(TM)model.Life cycle assessment(LCA)is conducted to quantify the environmental impact,whereas life cycle cost assessment(LCCA)is performed to analyze the profitability of LNG as an alternative fuel.The potential impact of the future fuel price uncertainties is addressed using Monte Carlo simulations.The LCA findings indicate that LNG has the potential to reduce the CF of the vessel by 14%to 16%,in comparison to a diesel power system configuration that serves as the baseline scenario.The LCCA results further indicate that the total cost of an LNG-powered ship is lower by 9.5%-13.8%,depending on the share of LNG and pilot fuels.This finding highlights the potential of LNG to produce considerable environmental benefits while addressing economic challenges under diverse operational and fuel price conditions.
文摘突发事件风险评估旨在为海上作业者识别危害提供依据,并将风险降至合理水平,以保护人们免受意外事故的影响。养殖工船在航行和作业时会面临恶劣自然条件的影响,不仅存在碰撞、搁浅等风险,同时还会因锚泊、养殖等工程作业活动而遭遇到更多的突发事件,故需对其所面临的突发事件进行风险评估。该文以养殖工船为研究对象,首先疏理其特点;然后分析其在航行和作业全流程中可能出现的突发事件的种类、概率、原因、过程及严重程度;最终基于失效模式与影响分析(failure mode and effects analysis,FMEA)方法对突发事件进行风险评估并制成FMEA工作表,为应急决策及应急管理系统构建提供有价值的数据决策支持。
