Hybrid RPI-MCDM Approach for FMEA: A Case Study on Belt Conveyor in Bir El Ater Mine, Algeria

Abstract

Failure Modes and Effects Analysis (FMEA) is a widely-used technique for enhancing dependability by ranking failure modes according to their Risk Priority Number (RPN). However, RPN has limitations, such as non-injectivity, non-surjectivity, and difficulties in weighing risk variables. The Risk Prioritization Index (RPI) model offers an alternative, addressing some of these limitations and providing user-friendly prioritization of failure modes. This study proposes an integrated risk assessment model that combines the RPI model with Multiple Criteria Decision-Making (MCDM) methods, specifically the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The first approach uses entropy, average weight, and scenarios to estimate the impact of risk variables and identify key elements. The second approach combines rankings of failure modes from five RPI models using the integrated MCDM-TOPSIS method. The proposed methods are applied to a case study of a belt conveyor system in a mining company in Bir El Ater, Algeria, demonstrating their effectiveness and dependability.

Enhancing Sustainability Through Drilling Machine Efficiency: A Comparative Analysis of TOPSIS and VIKOR Methods for Energy Optimization

“…In comparing our study's findings with existing literature, it's evident that our results corroborate the effectiveness of MCDM methods in optimizing drilling processes It is in line with the studies conducted in the studies [24] and [26]. Specifically, our use of TOPSIS and VIKOR methods for evaluating drilling efficiency mirrors the approach by the study [27], who also applied MCDM techniques in a mining context. However, the stronger correlation and agreement observed between TOPSIS rankings and the reference rankings in our study contrast with the moderate alignment reported in the research [28] on failure mode analysis.…”

“…It is a systematic and structured technique that helps decision-makers make informed choices. Here's TOPSIS Steps [27], To further clarify the TOPSIS methodology, it is based on the principle that the chosen alternative should have the shortest Euclidean distance from the Positive Ideal Solution (PIS) and the furthest Euclidean distance from the Negative Ideal Solution (NIS). This presupposes a perfectly compensatory decision-making model in which high scores on some criteria can offset low scores on others.…”

A hybrid reliability: FMEA methodology in risk assessment of a belt conveyor system

“…Additionally, Özfırat et al (2022) have done Event Tree Analysis (ETA) for each previously identified risk to display and decrease their severity degrees. A study by Moghrani et al (2023) took a step further, proposing a RPI-MCDM-based FMEA evaluation model that classifies failure modes of systems and machines in order to enhance failure modes in belt conveyor systems and the mining industry in general. Although numerous authors analyzed risk inside a mining environment, most of the research was done from a safety perspective, where potential hazards were perceived as the main consequence.…”

Sustainable Transportation Planning for Djebel Onk's Open-Pit Phosphate Mine in Algeria: Using Queuing Theory and Cost-Emission Analysis

“…At loading and unloading locations, there are occasionally wait durations. The waiting periods at these stations raise the unit cost per material carried since they lower operating capacity [9]. It is clear that when there is over-or undertrucking, waiting times happen.…”