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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
 
Abstract
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.
 
Keywords
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