Economic Evaluation of Maintenance Strategies for Steam Generator Tubes Using Probabilistic Fracture Mechanics and a Financial Method

Yoshihiro Isobe; Mitsuyuki Sagisaka; Shinobu Yoshimura; Genki Yagawa

doi:10.4028/www.scientific.net/SSP.120.119

Paper Titles

Ductile Fracture Behaviour of Class 2 and 3 LWR Piping and Its Implications for Flaw Evaluation Criteria
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Cracking Behaviours of Thermal Components
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The Study of Fatigue Crack Growth of 304SS with the Influence of Loading Frequency and Temperature
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Enhancement of Flaw Detectability Using Time Reversal Techniques
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Economic Evaluation of Maintenance Strategies for Steam Generator Tubes Using Probabilistic Fracture Mechanics and a Financial Method
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An Efficient General Purpose Contact Search Algorithm Using the Relative Coordinate System for Multibody System Dynamics
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Studies on a High-Temperature Air Combustion Burner for a Compact Fuel-Cell Reformer
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Analysis of Thermal Stress and Flow Characteristics in a Bellows-Seal Valve for the Reliability Establishment
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Finite Element Alternating Method for Interacting Surface Cracks
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Economic Evaluation of Maintenance Strategies for Steam Generator Tubes Using Probabilistic Fracture Mechanics and a Financial Method

Abstract:

As an application of probabilistic fracture mechanics (PFM) and a financial method, a risk-benefit model was developed for the purpose of optimizing maintenance activities of steam generator (SG) tubes used in pressurized water reactors (PWRs). To justify whether or not it is worth while implementing the selected maintenance strategy in terms of an economic point of view, net present value (NPV) was calculated as an index which is one of the most fundamental financial indices for decision-making based on the discounted cash flow (DCF) method.