Article
Engineering, Civil
Ehsan Momeni, Mehdi Poormoosavian, Hesam Salmani Tehrani, Ali Fakher
Summary: This study aims to demonstrate the feasibility of RS-FEM and ETA in assessing the reliability and risk to fatality of urban excavations. Through a case study and risk assessment, it was concluded that this method can be used for Quantitative Risk Assessment (QRA) in deep urban excavations.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Environmental
Tao Zeng, Guohua Chen, Genserik Reniers, Yunfeng Yang
Summary: A methodology is proposed for incorporating flood-induced domino effects in quantitative risk assessment, and its effectiveness is demonstrated through a case study. The study reveals a significant increase in overall risk for chemical industrial areas when considering domino effects, highlighting the importance of risk analysis for Natech-related scenarios.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Industrial
Fujio Kaneko, Tomohiro Yuzui
Summary: In this study, a new risk analysis method is proposed to estimate the risk of a target system by using a relatively small event tree, considering the time changes in the system state. The method utilizes probability distribution functions to estimate the maximum and minimum risk values of each event sequence. This approach greatly reduces the time required for risk analysis and is equivalent to using a dynamic event tree in principle.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Nuclear Science & Technology
Seunghyun Eem, Shinyoung Kwag, In-Kil Choi, Daegi Hahm
Summary: An earthquake at the Fukushima Nuclear Power Plant caused accidents at multiple units, sparking global concerns about nuclear power plant safety. Current probabilistic safety assessments in the nuclear industry assume either independent or completely dependent failure correlations between structures, systems, and components (SSCs), which can lead to unreasonable risk calculations and decision-making. This study aims to analyze the impact of failure correlations among SSCs on system safety to enable rational safety assessments and decision-making.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Nuclear Science & Technology
Andrea Alfonsi, Diego Mandelli, Carlo Parisi, Cristian Rabiti
Summary: This article introduces the shortcomings of traditional event-tree methods and the development of dynamic probabilistic risk assessment techniques, focusing on the framework and capabilities of the RAVEN dynamic PRA tool. It also explains how RAVEN simulates random events, performs uncertainty quantification, and processes the large amount of data generated through sampling.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Mathematics
Mohammad Al Bataineh, Zouhair Al-qudah, Atef Abdrabou, Ayman N. Sandokah
Summary: This study investigates the dynamics of three discrete independent events occurring randomly and repeatedly within the interval [0, T]. The starting times of these events are represented by three independent continuous random variables, uniformly distributed over the time interval [0, T]. A closed-form expression for the probability of the joint occurrence of these three events, taking into account various values of the fraction gamma, is derived using a geometric probability approach. The expected value of the intersection duration of the three events within the time interval [0, T] is determined, and a comprehensive solution for evaluating the expected number of trials required for the simultaneous occurrence of these events is provided.
Article
Engineering, Environmental
Zeinab Masalegooyan, Farzad Piadeh, Kourosh Behzadian
Summary: This paper presents a new framework for evaluating the risk probability of major fires in landfills using fuzzy fault tree analysis, and demonstrates its effectiveness through a real-world case study.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Physics, Fluids & Plasmas
Qingzhu Liang, Xinyan Xu, Changhong Peng
Summary: The China Fusion Engineering Test Reactor (CFETR) is a facility in China's plan for sustainable fusion energy. Safety analysis of the large tritium inventory is necessary during the design phase of the CFETR. Few studies on probabilistic approaches for CFETR safety analysis are available. This paper proposes a probabilistic risk assessment (PRA) model for tritium release into the environment in CFETR.
Article
Engineering, Marine
Vladimir Rykov, Olga Kochueva, Mais Farkhadov, Elvira Zaripova, Anna Zhaglova
Summary: The paper proposes a methodology and procedure for constructing a risk tree and calculating the corresponding characteristics, addressing the uncertainty in initial information about time and damage in risk analysis of complex engineering systems. The methodology involves identifying the most dangerous path of risk situation development and analyzing the sensitivity of risk characteristics to initial information. The proposed approach is applied to an automated system for remote monitoring of underwater gas pipeline.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Cheng Cheng, Rui Zhu, Russell G. Thompson, Lihai Zhang
Summary: Solid waste management is crucial for sustainable development and environmental protection, with waste collection and transportation being a key step. This study proposes using reliability analysis to manage uncertainties and optimizing the allocation of waste treatment demand to maximize system reliability. A case study in Hong Kong demonstrates the effectiveness of this method.
Article
Plant Sciences
Andrea Giachetti, Francesco Ferrini, Gianni Bartoli
Summary: Urban trees are crucial for sustainable and resilient cities but also carry risks. A study presents a procedure to quantify the risk of trees falling under extreme wind events, with the combination of hazard, exposure, vulnerability and damage, characterized by Scale and Degree of Knowledge factors.
URBAN FORESTRY & URBAN GREENING
(2021)
Article
Green & Sustainable Science & Technology
Francesco Di Maio, Pietro Tonicello, Enrico Zio
Summary: This paper proposes a novel framework for analyzing integrated energy systems (IESs) that are vulnerable to both stochastic failures and climate-induced failures. The framework allows for the analysis of different types of IESs and concludes that these systems are resilient to climate-induced failures.
Article
Green & Sustainable Science & Technology
Hanwen Zhang, Renzhi Liu, Jing Liu, Zhijiao Zhang
Summary: The leakage of toxic and hazardous substances during air pollution accidents poses a great threat to local environmental safety, human health, and property security. Bayesian networks are well suited to solve problems with high complexity and uncertainties. A BN-based approach with diffusion simulation was proposed to estimate the risk of air pollution accidents in a probabilistic way at the local scale.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Multidisciplinary
Jishin T. Jayan, K. Muthukumar, V. R. Renjith, Priscilla George
Summary: Pipeline failures can cause fires, environmental damage, material loss, and casualties, highlighting the importance of effective risk assessment. This study uses Bayesian approach and Bow-tie analysis to determine the failure frequencies of identified causes and identify weak links associated with specific consequences.
JOURNAL OF ENGINEERING RESEARCH
(2021)
Article
Ergonomics
Eunsol Cho, Yujeong Yun, Cheol Oh, Gunwoo Lee
Summary: The rapid growth of the delivery service market in Korea due to COVID-19 has led to an increase in crashes involving delivery motor scooters. Measures to improve the traffic safety of these scooters are insufficient, despite the continuous growth of the food delivery service industry. This study derived precursors to detect risky riding events using real-world data and found three salient riding risk precursors with a classification accuracy of 95.7%, which can contribute to enhancing the safety of food delivery motor scooters.
ACCIDENT ANALYSIS AND PREVENTION
(2023)
Article
Engineering, Chemical
Chao Chen, Hang Chen, Li Mo, Shenbin Xiao, Changjun Li, Ming Yang, Genserik Reniers
Summary: Fire-induced domino effect is a major threat to hazardous material storage tanks. Previous research neglected the impact of wind load on the thermal buckling behavior of tanks exposed to fire. This paper conducts a numerical simulation to analyze the synergistic effects of fire and wind loads on the thermal post-buckling behavior of storage tanks, considering wind parameters and heat radiation parameters.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Zhang Chu, Liu Lili, Li Wei, Li Beibei, Liu Mingxing
Summary: This study predicts the fatigue life of blasting discs using a combined simulation method and measures the deformation of conventional slotted blasting discs subjected to repeated loading using a high-precision laser scanning method. A relationship model is established between deformation, loading pressure, cycle number, and change in blasting pressure. The results show that the deformation varies linearly with the cycle number and follows a power function relationship with the change in blasting pressure. The deformation can be used to accurately predict the fatigue life of blasting discs.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Shin-Mei Ouyang, Jia-Chi Ye, Wei-Chun Chen, Yu-Jen Chen, Chin-Feng Chen
Summary: This study employed the Taguchi method and analysis of variance to investigate the factors that influence the deterioration of pyrotechnics when stored under different humidity and temperature conditions. Various experimental methods were used to study the microstructure, heat flow, and safety of the pyrotechnics. The results showed that humidity had a significant impact on the pyrotechnics, and controlling humidity could reduce the hazards associated with storing pyrotechnics.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Bei Li, Huiqiang Liu, Heng Gao, Chi-Min Shu, Mingshu Bi
Summary: The moisture content sprayed into the dust layer in industrial sites is a main factor affecting reignition. The study found that moisture has a certain influence on the thermophysical properties of the dust layer, playing an important role in heat transfer and heat absorption processes. The results showed that as the moisture content increased, the thermal conductivity and heat sink density of the sample increased, indicating the need to have a heat sink density higher than the heat increase value to suppress ignition.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)
Article
Engineering, Chemical
Yue Jing, Yong Pan, Fan Yang, Dan Wei, Wenhe Wang
Summary: A comprehensive risk assessment method for the esterification process was proposed in this study. It established a comprehensive evaluation index system and utilized improved Dempster-Shafer evidence theory and cloud model for assessment. The method was validated through case studies and showed consistency with established indexes.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2024)