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<p>Water treatment plant (WTP) not only treats contaminated water to make it safe for drinking and other purposes, but also contributes to protect environment from adverse effect of the polluted water. To avert WTP’s failure, ensuring its round the clock functioning, it is important to formulate preventive maintenance strategies to minimize/eliminate the various failure modes (FMs) that may lead to plant’s failure. In this study, sixteen FMs were identified initially from the literature (secondary source) and subsequently, thirteen potential FMs were finalized based on the consensus among six experts (primary source) from different WTP of the national capital territory (NCT) of Delhi, India. Failure mode and effects analysis (FMEA), based on an integrated fuzzy multi-criteria decision-making (MCDM) methods, i.e. fuzzy analytical hierarchy process (FAHP) and fuzzy VIekriterijumsko KOmpromisno Rangiranje (FVIKOR), was used to determine rank of the FMs. The data required for application of both FAHP and FVIKOR were collected from the experts in linguistic terms which were subsequently transformed into equivalent triangular fuzzy numbers. Weight of three risk factors (RFs), viz. occurrence (<i>O</i>), severity (<i>S</i>), and detection (<i>D</i>) was computed using FAHP. Rank of the FMs, signifying their importance for the plant’s failure, was derived using FVIKOR. Results revealed that “air binding of the filter beds (WTPFM8)” and “damage of air and water pipes in filters (WTPFM4)” are the most and the least important FMs, with corresponding ranks of 1 and 13, respectively. Reliability of the ranking results was established through sensitivity analysis.</p>

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Analysing the Failure Modes of Water Treatment Plant Using FMEA Based on Fuzzy AHP and Fuzzy VIKOR Methods

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Sapna Kumari,
  • Kafeel Ahmad,
  • Zahid A. Khan,
  • Shafi Ahmad

摘要

Water treatment plant (WTP) not only treats contaminated water to make it safe for drinking and other purposes, but also contributes to protect environment from adverse effect of the polluted water. To avert WTP’s failure, ensuring its round the clock functioning, it is important to formulate preventive maintenance strategies to minimize/eliminate the various failure modes (FMs) that may lead to plant’s failure. In this study, sixteen FMs were identified initially from the literature (secondary source) and subsequently, thirteen potential FMs were finalized based on the consensus among six experts (primary source) from different WTP of the national capital territory (NCT) of Delhi, India. Failure mode and effects analysis (FMEA), based on an integrated fuzzy multi-criteria decision-making (MCDM) methods, i.e. fuzzy analytical hierarchy process (FAHP) and fuzzy VIekriterijumsko KOmpromisno Rangiranje (FVIKOR), was used to determine rank of the FMs. The data required for application of both FAHP and FVIKOR were collected from the experts in linguistic terms which were subsequently transformed into equivalent triangular fuzzy numbers. Weight of three risk factors (RFs), viz. occurrence (O), severity (S), and detection (D) was computed using FAHP. Rank of the FMs, signifying their importance for the plant’s failure, was derived using FVIKOR. Results revealed that “air binding of the filter beds (WTPFM8)” and “damage of air and water pipes in filters (WTPFM4)” are the most and the least important FMs, with corresponding ranks of 1 and 13, respectively. Reliability of the ranking results was established through sensitivity analysis.