SATMCS: An Efficient SAT-Based Algorithm and Its Improvements for Computing Minimal Cut Sets

Luo, Weilin; Ou, Wei; Wan, Hai

doi:10.1109/tr.2020.3014012

Cited by 2 publications

(2 citation statements)

References 42 publications

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“…The probability of failure is then quantitatively determined (Tavakoli and Nafar, 2021). According to Luo W. et al FTA computes a large class of system reliability properties and measures based on the fault tree that models failure propagation in a system (Luo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Bujna,

Prístavka,

Lee

et al. 2023

Agricultural Engineering

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Fault Tree Analysis (FTA) is a method that directly focuses on the modes of failures. The FTA is a graphical representation of the major faults or critical failures associated with a product, as well as the causes for the faults and potential countermeasures. The aim of this research paper is to calculate the probability of the top event – the failure of the process using FTA and propose a technique to prioritize factors for action design and reduce the likelihood of a top event failure based on manufacturers' requirements. We have constructed a qualitative fault tree to produce office components packed and sealed in blister packs using a KOCH KBS-PL machine. We defined the top event G – the production of office components, packed and sealed in blister packs on the machinery KOCH KBS-PL. Then we defined events leading to top events down to individual failure factors. Based on the links between the fault tree and the probability of failure, we performed a quantitative analysis to determine the probability of failure of individual events. We found out that the probability of failure of G is 5.04%. Subsequently, we identified which factors most significantly reduce the resulting probability of failure of factor G. These are the factors: E – feed rate, F – cooling, AL – incorrect setting and D – break. It has been proven that by controlling these 4 factors, we can reduce the probability of failure of top event G to 2.36%, provided that effective measures are taken. The final proposal meets the requirements of several manufacturers for a fast, efficient, and cost-effective solution. We have created a proposal that saves time, has minimal software and hardware requirements, and is easy to use. The efficiency and effectiveness of the proposal was that we identified the weakest points in the fault tree that most significantly cause the top event to fail. This prioritized the factors for the design of the measures.

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Section: Introductionmentioning

confidence: 99%

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Bujna,

Prístavka,

Lee

et al. 2023

Agricultural Engineering

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“…The FTA is a quantitative evaluation technique that identifies an event as the top event and systematically arranges all the causes of the error in a top-down structure that looks like a tree in order to calculate the probability of occurrence of the top event [1]. According to Luo W. et al FTA computes a large class of system reliability properties and measures based on the fault tree that model's failure propagation in a system [2]. Risk assessment methods are often used in industrial processes to avoid risks and reduce losses [3,4].…”

Section: Introductionmentioning

confidence: 99%

Application of FTA Analysis for Calculation of the Probability of the Failure of the Pressure Leaching Process

et al. 2021

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European Union legislation requires organizations to assess their processes in the context of risk management. The main task of risk management is to manage all risks that can significantly affect the outcome of processes. The article is focused on risk evaluation in pressure leaching at elevated temperature using the method Fault Tree Analysis (FTA). The effectivity of pyrite and arsenic pyrite decomposition by oxidative pressure leaching is influenced by the duration of the process, by the temperature, concentration of the leaching solution and by a density of the slurry. It was found that, under equitable conditions, the arsenic pyrite decomposes more intensely than pyrite. Under laboratory conditions, leaching is performed in an autoclave. Due to the aggressive environment, increased pressure and temperature, process failure is possible. Its probability was calculated by FTA. It has been found that the probability of the top event in the examined process was disproportionately high (0.057) and represents an invitation to take corrective actions. The Monte Carlo method was used for the simulation of the effect the probability of basic events on the probability of the top event—the failure of the leaching process.

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SATMCS: An Efficient SAT-Based Algorithm and Its Improvements for Computing Minimal Cut Sets

Cited by 2 publications

References 42 publications

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Application of FTA Analysis for Calculation of the Probability of the Failure of the Pressure Leaching Process

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