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In view of the problem that the construction process of the green transformation of the old industrial plants is easily affected by its own structure, transformation scheme, building technology and many other uncertain factors, a risk assessment model based on improved FMEA is proposed by combining fuzzy theory and D-S evidence theory. Through the data analysis of the primary indicators, 25 risk factors are screened from five aspects. On the basis of FMEA risk fuzzy evaluation matrix, Murphy’s method is introduced to correct the classical D-S evidence theory gives experts reasonable weight. The risk level is ranked according to the RPN, and the key risks factors in the construction of green transformation project of old industrial plants are determined. Finally, the model is verified by an engineering example, and the evaluation result is consistent with the actual situation.

Construction risk assessment of green transformation of old industrial plants based on improved FMEA