Risk Assessment and Reliability Analysis of Oil Pump Unit Based on D-S Evidence Theory

Oil pumps are crucial equipment in pipeline transportation, and their safe reliable operation is essential for the smooth efficient of oil station associated pipelines. The failure can result significant consequences, making it to evaluate safety effective maintenance system prediction. Failure mode, effects, criticality analysis (FMECA) a quantitative fault technique that assigns priority modes using risk number (RPN). However, RPN may not accurately express uncertainty judgments factors given by multiple experts. To address this limitation, paper proposes novel FMECA method based on D-S evidence theory. involves interval form obtain factor evaluations from experts data combination multi-value representation each mode. prioritization optimized confidence fidelity distribution eliminate same level. Finally, normalization used determine degree ranking pump units. Overall, proposed an practical approach evaluation reliability