Oxide Fuel Performance Modeling and Simulation

Uffelen, P. Van; Pastore, Giovanni

doi:10.1016/b978-0-12-803581-8.11693-5

Cited by 6 publications

(3 citation statements)

References 173 publications

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“…It is well known that the oxygen diffusion coefficient along grain boundary is 108 times greater than that of bulk diffusion [40]. This is due to the atomic jump frequency in these planar defects, which is about a million times greater than the jump frequency of regular lattice atoms [41]. This fast diffusion of oxygen at high temperatures along columnar boundaries resulted in the worse oxidation resistance of CS4 coating samples.…”

Section: Discussionmentioning

confidence: 99%

High-Temperature Oxidation Behaviour of CrSi Coatings on 316 Austenitic Stainless Steel

Gurtaran

Zhang

et al. 2023

Materials

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In this study, a closed-field unbalanced magnetron sputtering system, which is environmentally friendly and has high deposition efficiency, was used to deposit CrSi coatings on 316 austenitic stainless steel. This system utilised separate Cr and Si targets, and the appropriate content of Cr and Si of the coatings was adjusted by changing the currents applied to the targets. A series of CrSi coatings with different Si/Cr ratios were produced, and their oxidation behaviour at elevated temperatures was investigated. By analysing the weight gain, surface morphology and microstructure, composition and phase constituents, the oxidation behaviour at 600 °C, 700 °C and 800 °C was investigated and the optimized coating to protect the stainless steel has been identified. The outcome of the research indicated that a small amount of Si (between 4–7 at.%) in Cr coatings is effective in protecting the austenitic stainless steel against oxidation at high temperatures, while a high Si content (around 10 at.% or more) makes the coating more brittle and prone to cracking or delamination during oxidation at 800 °C.

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Section: Discussionmentioning

confidence: 99%

High-Temperature Oxidation Behaviour of CrSi Coatings on 316 Austenitic Stainless Steel

Gurtaran

Zhang

et al. 2023

Materials

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“…Fuel performance codes that are not informed by thermodynamics will not be discussed here as they are out of scope. For the interested reader, review articles are available on oxide fuel performance codes [68,69], metallic fuel performance codes [70], and TRISO fuel performance [71].…”

Section: Class Ii: Industrial Nuclear Fuel Performance and Safety Codesmentioning

confidence: 99%

Thermodynamically Informed Nuclear Fuel Codes—A Review and Perspectives

Piro

2021

Thermo

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A number of codes are used to predict various aspects of nuclear fuel performance and safety, ranging from conventional fuel performance codes to simulate normal operating conditions to integral engineering codes to simulate severe accident behaviour. There has been a number of reportings in the open literature of nuclear fuel codes being informed by thermodynamic calculations, ranging from the use of simple thermodynamic correlations to direct coupling of equilibrium thermodynamic software. Progress in expanding predictive capabilities have been reported, which also includes advances in thermodynamic database development to better capture irradiated fuel. However, this progress has been accompanied by several challenges, including effective coupling of different types of physical phenomena in a practical manner and doing so with a reasonable increase in computational expense. This review paper will summarize previous experiences reported in the open literature in coupling thermodynamic calculations with nuclear fuel codes and applications, identify current challenges and limitations, and offer some perspectives for the community to consider moving forward.

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“…After a certain operating time, fuel stresses the rod and leads to its deformation [4]. We develop the confocal chromatic sensor in order to monitor this deformation.…”

Section: Introductionmentioning

confidence: 99%

Confocal chromatic sensor for displacement monitoring in research reactor

Agoyan

Fourneau²,

Cheymol³

et al. 2021

EPJ Web Conf.

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Confocal chromatic microscopy is an optical technique allowing measuring displacement, thickness, and roughness with a sub-micrometric precision. Its operation principle is based on a wavelength encoding of the object position. Historically, the company STIL based in the south of France has first developed this class of sensors in the 90’s. Of course, this sensor can only operate in a sufficiently transparent medium in the used spectral domain. It presents the advantage of being contactless, which is a crucial advantage for some applications such as the fuel rod displacement measurement in a nuclear research reactor core and in particular for cladding-swelling measurements. The extreme environmental conditions encountered in such experiments i.e. high temperature, high pressure, high radiations flux, strong vibrations, surrounding turbulent flow can affect the performances of this optical system. We then need to implement mitigation techniques to optimize the sensor performance in this specific environment. Another constraint concerns the small volume available in the irradiation rig next to the rod to monitor, implying the challenge to conceive a miniaturized sensor able to operate under these constraints.

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Oxide Fuel Performance Modeling and Simulation

Cited by 6 publications

References 173 publications

High-Temperature Oxidation Behaviour of CrSi Coatings on 316 Austenitic Stainless Steel

High-Temperature Oxidation Behaviour of CrSi Coatings on 316 Austenitic Stainless Steel

Thermodynamically Informed Nuclear Fuel Codes—A Review and Perspectives

Confocal chromatic sensor for displacement monitoring in research reactor

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