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Developing a risk-based maintenance model for a Natural Gas Regulating and Metering Station using Bayesian Network

Leonardo, Leoni; Ahmad, Bahoo Toroody; Filippo, De Carlo; Paltrinieri, Nicola
Journal article
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URI
http://hdl.handle.net/11250/2583175
Date
2018
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  • Institutt for maskinteknikk og produksjon [3186]
  • Publikasjoner fra CRIStin - NTNU [26591]
Original version
10.1016/j.jlp.2018.11.003
Abstract
During the last decades, the vital role of maintenance activities in industries including natural gas distribution system has cleared up progressively. High costs may induce to reduced maintenance and, in turn, lead to a lower availability and high risk of undesired events. Therefore, a probabilistic model, based on an acceptable level of risk, is required to avoid under and over estimation of maintenance time interval. This paper presents an advanced Risk-based Maintenance (RBM) methodology to optimize maintenance time schedule. Bayesian Network (BN) is applied to model the risk and the associated uncertainty. The developed method can assist the asset managers to work out the exact maintenance time for each component according to the risk level. To demonstrate and discuss the applicability of the methodology, a case study of Natural Gas Reduction and Measuring Station in Italy is considered. Results prove that the most critical components are the calculator and pilots, while the most reliable one is the odorization. Furthermore, the pressure and temperature gauge (PTG), the remote control system (RCS) and the meter are predicted as the components that require less time to transit from minor risk to catastrophic risk.
Publisher
Elsevier
Journal
Journal of Loss Prevention in the Process Industries

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