Improved formal safety assessment methodology using fuzzy TOPSIS for LPG-fueled marine engine system

被引：24

作者：

Yeo, Siljung ^{[1
]}

Jeong, Byongug ^{[2
]}

Lee, Won-Ju ^{[3
,4
]}

机构：

[1] Korea Maritime & Ocean Univ, Div Marine Engn, Pusan 49112, South Korea

[2] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, 100 Montrose St, Glasgow G4 0LZ, Scotland

[3] Korea Maritime & Ocean Univ, Div Marine Syst Engn, Pusan 49112, South Korea

[4] Korea Maritime & Ocean Univ, Interdisciplinary Major Maritime & AI Convergence, Pusan 49112, South Korea

来源：

OCEAN ENGINEERING | 2023年 / 269卷

关键词：

LPG marine engine; Risk assessment; Formal safety assessment; Failure mode and effect analysis; Fuzzy logic; TOPSIS; GROUP DECISION-MAKING; RISK-EVALUATION; FAILURE MODE; GAS LEAKAGE; LNG; VESSELS; HAZOP; FMEA; OIL;

D O I：

10.1016/j.oceaneng.2022.113536

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

In this study, a risk assessment of a Liquefied Petroleum Gas (LPG) marine engine system being developed for installation in the first LPG-powered ship in South Korea was performed and a new standard for a formal safety assessment (FSA) was proposed. Based on the FSA technique, hazards were identified through a failure mode and effect analysis (FMEA) in the first stage. An FMEA workshop was conducted to assess 110 components, and 89 hazards were identified. Of these, 19 failure modes of intolerable level were identified, and risk ranks were divided into four groups. Then, a more objective risk assessment was conducted using fuzzy set theory to compensate for the subjectivity of FMEA. Additionally, a technique for order performance by similarity to ideal solution (TOPSIS) was used to represent the risk rank of individual systems more precisely. By the second stage, risk ranks could be divided into 28 groups through the classification of a total of 89 hazards. Finally, risk control options were presented for high-ranking hazards according to the fuzzy TOPSIS results, and a cost-benefit analysis was performed. Consequently, the gross and net costs of averting a fatality were calculated as US $2.98 million and US $2.93 million, respectively. Through a cost-benefit analysis, the periodic exchange of main critical components was found to be in the range of economic criteria that could be recommended as a safety standard. The risk assessment technique proposed in this study allows a more objective and effective selection of critical hazards that necessitate risk control measures.

引用

页数：16