Proceedings of the
The 33rd European Safety and Reliability Conference (ESREL 2023)
3 – 8 September 2023, Southampton, UK
Multicriteria Optimal Maintenance Planning for Industrial Electrical Installations
Analysis, Evaluation and Risk Management Laboratory (LabRisco), University of Sao Paulo, Brazil.
ABSTRACT
This study proposes a practical method for developing maintenance plans for industrial electrical systems that minimize the cost of failures and maintenance using a model capable of quantifying the risk of an electrical system failure considering (a) its configuration, (b) current condition of the components, and (c) uncertainties in the current condition of the components. The system reliability is obtained through simulation based on the survival signature, and the action plan is defined based on a set of actions that can be performed on the system components: retain, replace, refurbish, or acquire spare parts. The options are evaluated with a multi-objective optimization algorithm, NSGA-II, to find maintenance plans on the Pareto front, minimizing the loss of production due to unavailability and maintenance costs. A case study is presented with a process plant with more than 20 years of operation, receiving a new expansion that will use the existing electrical system.
Keywords: Reliability optimization, Electrical installations, Maintenance optimization, Survival Signature.
