Fmea Analysis in Mechanical Installation Project Based on Best Worst and Neutrosophic Ahp Integrated Model

Abstract

Failure mode and effect analysis (FMEA) is a risk assessment tool that aims to improve security, identify, evaluate, and minimize failure modes in systems, designs, products, processes, or projects. The risk priority number (RPN) is the fundamental assessment criteria for FMEA-based risk assessment practices. The determination of RPN is based on the risk factors like occurrence (O), severity (S), and detection (D), should be calculated appropriately. However, the traditional RPN calculation method has been heavily criticized for many reasons, such as not considering the weight of the risk factors. To overcome this disadvantage of the traditional FMEA method, this paper proposes the FMEA model with Best Worst method (BWM) and Neutrosophic analytic hierarchy process (NAHP) integrated model for mechanical installation project. The weights of FMEA parameters S, O, and D are calculated by BWM method, which provides highly consistent pairwise comparison and reliable results. Then nine failure modes are evaluated in terms of S, O, and D parameters by NAHP method. Risk priority indexes are computed for determining the risk priorities of the failure modes. Finally, preventive measures have been proposed for the identified failure modes.