Fig 1.
The study steps.
Table 1.
Definitions related to each of the factors and sub-factors in FMEA+ [1,44,60–65].
Table 2.
Results of the Delphi study.
Table 3.
Fuzzy average matrix and normalized weights of FM&EA+ technique factors.
Table 4.
Fuzzy mean matrix and normalized weights of occurrence factor criteria.
Table 5.
Fuzzy mean matrix and normalized weights of severity factor criteria.
Table 6.
Fuzzy mean matrix and normalized weights of detectability factor criteria.
Fig 2.
Schematic of FMEA+ method.
Table 7.
Safety risk decision levels in the novel FMEA+ method.
Table 8.
Comparing the results of the FMEA and FMEA+ methods with the real accidents data in the studied industry.