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Keywords = fuzzy evidence reasoning (FER)

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20 pages, 1409 KiB  
Article
Safety Risk Evaluation of Metro Shield Construction When Undercrossing a Bridge
by Kuang He, Jun Zhu, Hui Wang, Yanlong Huang, Hujun Li, Zishuang Dai and Jingxiao Zhang
Buildings 2023, 13(10), 2540; https://doi.org/10.3390/buildings13102540 - 8 Oct 2023
Cited by 7 | Viewed by 1708
Abstract
The government of China has planned numerous metro projects, and with more metros, undercrossing of bridges can hardly be avoided. Metro shield construction when undercrossing a bridge (MSCUB) frequently takes place in complicated natural and social contexts, which often makes the construction process [...] Read more.
The government of China has planned numerous metro projects, and with more metros, undercrossing of bridges can hardly be avoided. Metro shield construction when undercrossing a bridge (MSCUB) frequently takes place in complicated natural and social contexts, which often makes the construction process more susceptible to safety accidents. Therefore, it is crucial to look into the safety risk during MSCUB. This paper identified the safety risk factors during MSCUB by using a literature review and expert group evaluation, proposed a novel safety risk assessment model by integrating confirmatory factor analysis (CFA) and fuzzy evidence reasoning (FER), and then selected a project case to test the validity of the suggested model. The study results show that (a) a safety risk factor list for MSCUB was identified, including four first-level safety risk factors and thirty-seven second-level safety risk factors; (b) the proposed safety risk assessment model can be used to measure the risk values of the overall safety risk of a worksite, the first-level safety risk factors, and the second-level safety risk factors during MSCUB; (c) environment-type safety risk factors and personnel-type safety risk factors have higher risk values during shield construction when undercrossing a bridge; (d) when compared with worker-type safety risk factors, manager-type safety risk factors are the higher risks. This study can enrich the theoretical knowledge of MSCUB safety risk assessment and provide references for safety managers for conducting scientific and effective safety management on a construction site when constructing metro shields undercrossing a bridge. Full article
(This article belongs to the Topic Building a Sustainable Construction Workforce)
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19 pages, 1554 KiB  
Article
Risk Identification of FPSO Oil and Gas Processing System Based on an Improved FMEA Approach
by Longting Wang, Liping Sun, Jichuan Kang, Yanfu Wang and Haiqing Wang
Appl. Sci. 2021, 11(2), 567; https://doi.org/10.3390/app11020567 - 8 Jan 2021
Cited by 15 | Viewed by 4302
Abstract
It is increasingly necessary to perform risk analysis in marine structures, to ensure system safety, as they are large and complex. In view of the shortcomings of failure mode and effect analysis (FMEA), a modified fuzzy TOPSIS (Technique for Order Preference by Similarity [...] Read more.
It is increasingly necessary to perform risk analysis in marine structures, to ensure system safety, as they are large and complex. In view of the shortcomings of failure mode and effect analysis (FMEA), a modified fuzzy TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) approach is proposed that is based on fuzzy evidence reasoning (FER), and considers the risk factor rating and relative weight. The presented method is used to prioritize the risk of equipment failure modes for the floating production storage and offloading system (FPSO) oil and gas processing system. The subjective weights and objective weights of occurrence (O), severity (S), and detectability (D) have been considered comprehensively. The subjective experience of the experts and the objective information reflected by the O, S, and D ratings are all included in the weights, making the ranking results closer to reality. The results can be scientific references for decision-makers in risk identification. Full article
(This article belongs to the Section Marine Science and Engineering)
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