Role and importance of NDE in nuclear power plant life extension

Trampus, Péter

doi:10.1016/j.prostr.2019.07.036

Cited by 17 publications

(4 citation statements)

References 2 publications

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“…A typical approach by most researchers and asset managers is to focus on the optimization of cost, from an economics perspective, using one or more of the following tools: benefit-to-cost analysis, life-cycle cost optimization or ROI analysis Woodhouse, 2012;Herrmann et al, 2011;Gu et al, 2012;Jones & Zsidisin, 2008). Other approaches focus on technical aspects that mostly deal with SIM and AIM, with the core components being safety, reliability, and availability Boutrot et al, 2017;Nielsen and Sørensen, 2021;Trampus, 2019). A few approaches combine both technical and economic aspects in the form of a techno-economic analysis, such as the work by Shafiee et al (2016) and by other authors (Golmakani and Pouresmaeeli, 2014;Picard et al, 2007).…”

Section: Overview Of Decision-making Models In Asset Lementioning

confidence: 99%

An RUL-informed approach for life extension of high-value assets

Ochella

Shafiee

Sansom

2022

Computers & Industrial Engineering

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Section: Overview Of Decision-making Models In Asset Lementioning

confidence: 99%

An RUL-informed approach for life extension of high-value assets

Ochella

Shafiee

Sansom

2022

Computers & Industrial Engineering

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“…Due to the aging in the most important components-which implies a continuing time-dependent degradation of materials due to service conditions, including normal operation and transient conditions-the nuclear power plants are initially designed for a technical life of 40 years [55]. It is common experience that over long periods, there is a gradual damage in the properties of materials as a consequence of neutron radiation and the corrosion these components endure [56][57][58]. Thus, the reactor vessel materials of the PWR design are the components most affected by neutron radiation, thereby reducing its mechanical properties [59].…”

Section: Simulation Of the Life Extension Of Operational Pwrmentioning

confidence: 99%

A Global Review of PWR Nuclear Power Plants

2020

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Nuclear energy is presented as a real option in the face of the current problem of climate change and the need to reduce CO2 emissions. The nuclear reactor design with the greatest global impact throughout history and which has the most ambitious development plans is the Pressurized Water Reactor (PWR). Thus, a global review of such a reactor design is presented in this paper, utilizing the analysis of (i) technical aspects of the different variants of the PWR design implemented over the past eight years, (ii) the level of implementation of PWR nuclear power plants in the world, and (iii) a life extension scenario and future trends in PWR design based on current research and development (R&D) activity. To develop the second analysis, a statistical study of the implementation of the different PWR variants has been carried out. Such a statistical analysis is based on the operating factor, which represents the relative frequency of reactors operating around the world. The results reflect the hegemony of the western variants in the 300 reactors currently operating, highlighting the North American and French versions. Furthermore, a simulation of a possible scenario of increasing the useful life of operational PWRs up to 60 years has been proposed, seeing that in 2050 the generation capacity of nuclear PWRs power plants will decrease by 50%, and the number of operating reactors by 70%.

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“…Pressure tubes are inspected using Ultrasonic Testing (UT), a non-destructive examination (NDE) technique, to assess fitness for service. The usage of NDE in the inspection of nuclear power plants has been previously discussed in [5][6][7][8][9][10]. CANDU TM reactors contain 380-480 fuel channels.…”

Section: Introductionmentioning

confidence: 99%

Using Deep Learning to Automate the Detection of Flaws in Nuclear Fuel Channel UT Scans

Hammad

Simpson²,

Hall³

2022

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Nuclear reactor inspections are critical to ensure the safety and reliability of a nuclear facility's operation. In Canada, Ultrasonic Testing (UT) is used to inspect the health of pressure tubes which are part of Canada's Deuterium Uranium (CANDU™) reactor's fuel channels. Currently, analysis of UT scans is performed by manual visualization and measurement to locate, characterize, and disposition flaws. Therefore, there is motivation to develop an automated method that is fast and accurate. In this paper, a proof of concept (PoC) that automates the detection of flaws in nuclear fuel channel UT scans using a convolutional neural network (CNN) is presented. The CNN model was trained after constructing a dataset using historical UT scans and the corresponding inspection results. The requirement for this prototype was to identify the location of at least a portion of each flaw in UT scans while minimizing false positives (FPs). The proposed CNN model achieves this target by automatically identifying at least a portion of each flaw where further manual analysis is performed to identify the width, the length, and the type of the flaw.

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Role and importance of NDE in nuclear power plant life extension

Cited by 17 publications

References 2 publications

An RUL-informed approach for life extension of high-value assets

An RUL-informed approach for life extension of high-value assets

A Global Review of PWR Nuclear Power Plants

Using Deep Learning to Automate the Detection of Flaws in Nuclear Fuel Channel UT Scans

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