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Chinese Journal of Management Science ›› 2025, Vol. 33 ›› Issue (10): 67-75.doi: 10.16381/j.cnki.issn1003-207x.2023.0245

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Periodic Maintenance Model of Parallel Critical System for Major Equipment to Prevent the Failure During the Operation Process

Qin Zhang1, Peng Xu2(), Zhigeng Fang3, Sifeng Liu3   

  1. 1.Business School,Yangzhou University,Yangzhou 225127,China
    2.School of Business,Nanjing Normal University,Nanjing 210023,China
    3.College of Economics and Management,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China
  • Received:2023-02-15 Revised:2023-06-12 Online:2025-10-25 Published:2025-10-24
  • Contact: Peng Xu E-mail:pengxu@smail.nju.edu.cn

Abstract:

Most of the preventive maintenance researches just focus on the whole life the systems but ignore the operation process. For some major equipment, they can not be always in working condition and might be shut down in most time. Therefore, the high reliability in the whole life dose not mean that the systems have high reliability during the operation process. Nowadays, some scholas have integrated the operation duration into the preventive maintenance models and proved that if the operation duration is considered, the maintenance policies can be more effective to guarantee high reliability for the systems. However, the related works just considered the one-unit system. Then, in order to prevent failure of parallel critical system when the major equipment is operating, the operation duration is considered into the present model, and a periodic maintenance model of parallel critical system for major equipment is proposed to prevent the failure during the operation process. Firstly, a periodic maintenance model of parallel critical system for major equipment with operation duration is formulated. Then, in order to balance the trade-off between the cost and maintainability, the periodic maintenance optimized models of parallel critical system for major equipment with scheduled replacement principle are formulated, according to replacement first and replacement last. Via the numerical examples, the optimum numbers of the units would be underestimated if the operation duration is not considered. In reliability theory, the smaller numbers of the units of the parallel systems would lead to the lower reliability. It verifies that the proposed models can be more effective to guarantee the high reliability. Finally, the suggested models are illustrated in maintaining the electrical system of a large ship based on the assumed data, which presents the analysis process of optimal polices and provide the decision-makers with the suggestions when they study the similar problems.

Key words: operation duration, major equipment, parallel critical system, periodic maintenance model, scheduled replacement principle

CLC Number: