Assessment of risks alternatives in the Tunisian case study within Triangular Fuzzy MACBETH

This paper is interested in studying the environmental problem in the process of transforming the hydrogen sulphide H2S in a gaseous state into sulphuric acid H2SO4in a liquid state. In reality, sulphuric acid generated by the gas treatment industry in Tunisia has harmful effects on both environment and health. The transformation process generates several risks. Hence, we address a multi-criteria aggregation method “Measuring Attractiveness by a Categorical Based Evaluation Technique” (MACBETH) to evaluate risks alternatives based on imprecise assessments expressed by a decision-maker. The non-homogeneous input data encourages us to incorporate triangular fuzzy logic and develop an extension of the MACBETH approach for a fuzzy environment: Triangular Fuzzy MACBETH approach which resolution helps the decision-maker to classify the various risks according to their importance order into M-MACBETH software. However, our goal is to identify the most dangerous risks so that necessary precautions can be taken. Then, five major risks are assessed in accordance with four criteria through linguistic information.