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Vol.11 No.4previousAA SP22 (AA165-166-167-168-169-170-171) NT96

Academic Articles
Regular Paper Vol. 11 No. 4 (2020) p.153 - p.162

Optimal Maintenance Scheduling in Nuclear Power Plants via Linear Programming Considering the Relationship between the Failure Cause and Maintenance Type


Mari ITO 1 and Masaaki SUZUKI 1,*

1 Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan

To achieve the reasonable and effective maintenance of nuclear power plants, it is essential to optimize the aging management from the viewpoints of both safety and efficiency. We propose a maintenance-scheduling model that minimizes the cost of maintenance activities while ensuring the reliability of safety-critical functions. In this study, we formulate the maintenance-scheduling problem as a mathematical programming model and consider that the effective maintenance activity differs depending on the cause of the latent failure. Computing maintenance activity schedules for a single component and all the components of a safety-critical function, we verify that the proposed model provides the optimal schedule. The proposed model enables us to quantitatively evaluate the impact of the allowable unreliability value of a function of interest on the schedule and thereby the tradeoff between the reliability of safety-critical functions and the maintenance cost.
System safety, Plant life management, Maintenance scheduling, Optimization, Operations research, Mathematical programming
Full Paper: PDF
Article Information
Article history:
Received 01 December 2018
Accepted 27 February 2020