Consequence Analysis of Most Hazardous Initiating Event in Electrical Energy Storage Systems Using Event Tree Analysis

Singh, Akshi Kunwar; Kumar, Rakesh S.; Pusti, Asutosh

doi:10.1007/s11668-022-01464-z

Cited by 4 publications

(1 citation statement)

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“…Quantitative analysis is mainly based on the reliability model established by the system failure statistics, and the reliability index is calculated by the reliability model, such as FTA method, the failure mode and its impact hazard method [24]. Semi-quantitative analysis is a method between qualitative and quantitative analysis, such ETA (Event Tree Analysis) method, Facility Risk View (FRR) [25] [26].…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of Subsea Control System Using FMEA and FFTA

Xiao

LIU

et al. 2023

Preprint

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Reliability technology has significant importance to ensure the safe operation of the system. To address the problems of complex system structure and lack of reliability data, a combination of Failure Mode and Effects Analysis (FMEA) and Fuzzy Fault Tree Approach (FFTA) is introduced. Firstly, the FMEA method is used to complete the qualitative analysis of the system reliability from the perspective of multi-factor failure modes, analyze the potential failure modes and failure causes of the system. And the risk matrix diagram is used to determine the degree of harm of different failure modes to the system function. Then, the system reliability is quantitatively analyzed by FFTA, and a fault tree model is established by dividing the system into "system-subsystem-component" and solving for the minimum cut set. In addition, by introducing fuzzy set theory to blur the failure probability of each bottom event and introducing triangular fuzzy function to quantitatively calculate the failure probability of the top event and the probabilistic importance of the bottom event, the weak points of each subsystem are identified. Finally, a qualitative and quantitative reliability analysis is conducted by using FMEA-FFTA method for subsea control system. Measures should be taken to focus on preventive protection and regular testing for the high risk, medium-high risk and medium risk modes of the subsea control system.

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Section: Introductionmentioning

confidence: 99%