This paper proposes a methodology for applying a multiobjective optimization to risk-based inservice testing with robustness. The multiobjective optimization is applied to solve the tradeoff between maintenance costs and unavailability of a standby system and then assist in determining the robust solution. In order to obtain the most robust solution, a decision-making method for the multiobjective optimization in the viewpoint of robustness is proposed. The risk ranking and revising risk-ranking processes are then used to assist in finding the most optimal surveillance test interval based on risk management. The applicability of the proposed methodology is confirmed by case studies for a standby system of a simplified high-pressure injection system in a nuclear power plant’s pressurized water reactor. The results showed that the proposed methodology provides an effective scheme to achieve the most optimal surveillance test interval based on risk and robustness.
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February 2005
Article
Application of a Multiobjective Optimization to Risk-Based Inservice Testing
Juksanee Virulsri,
e-mail: juksanee.v@chula.ac.th
Juksanee Virulsri
Department of Mechanical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
11
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Shinsuke Sakai,
Shinsuke Sakai
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Satoshi Izumi,
Satoshi Izumi
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Atsushi Iwasaki
Atsushi Iwasaki
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Juksanee Virulsri
11
Department of Mechanical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
e-mail: juksanee.v@chula.ac.th
Shinsuke Sakai
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
Satoshi Izumi
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
Atsushi Iwasaki
Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division September 3, 2004; revision received September 30, 2004. Review conducted by: S. Zamrik.
J. Pressure Vessel Technol. Feb 2005, 127(1): 13-19 (7 pages)
Published Online: March 15, 2005
Article history
Received:
September 3, 2004
Revised:
September 30, 2004
Online:
March 15, 2005
Citation
Virulsri, J., Sakai , S., Izumi , S., and Iwasaki, A. (March 15, 2005). "Application of a Multiobjective Optimization to Risk-Based Inservice Testing." ASME. J. Pressure Vessel Technol. February 2005; 127(1): 13–19. https://doi.org/10.1115/1.1845451
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