Maintenance scheduling optimization for industrial centrifugal pumps

Augusto Bianchini (), Marco Pellegrini and Jessica Rossi
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Augusto Bianchini: University of Bologna
Marco Pellegrini: University of Bologna
Jessica Rossi: University of Bologna

International Journal of System Assurance Engineering and Management, 2019, vol. 10, issue 4, No 32, 848-860

Abstract: Abstract Centrifugal pumps are widely used in industry and their damage can cause time losses and production and service level reduction. Due to varying operating conditions, preventive maintenance is the typical strategy to avoid unexpected failures of pumps, but it may involve unnecessary interventions and costs. The paper aims to develop and apply a Condition-Based Maintenance (CBM) procedure on centrifugal pumps to assist decision-making in scheduling maintenance. Through the monitoring of pump state, it would be possible to plan an optimal scheduling of maintenance actions in terms of time, costs and spare parts procurement. The proposed procedure is based on vibration monitoring. Instrumentation, measurement locations, acquisition parameters and pump operating conditions were defined, according to ISO 10816-7 (2009). The method was previously developed for submersible well pumps and now is applied to horizontal and vertical surface centrifugal pumps. Several vibration tests were carried on centrifugal pumps in the plants of the Italian utility Company: Publiacqua S.p.A. (Italy). Pumps under study were selected with varying size and operation time to provide the vibration trend with pump characteristics and operating time, that is a novelty in literature and in practical application. Contrary to what expected by ISO 10816-7 (2009), the paper shows that vibration is influenced by several parameters (e.g. power, pump orientation and rotational speed), which make the ISO standard approach not quite appropriate for centrifugal pumps. As in the proposed method, monitoring the vibrational trend and its variations with time could ensure a more effective CBM strategy.

Keywords: Condition-based maintenance; Centrifugal pumps; Vibration monitoring; Fault detection; Maintenance performance (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s13198-019-00819-4

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