Iron–Chromium–Aluminum (FeCrAl) Cladding Oxidation Kinetics and Auxiliary Feedwater Sensitivity Analysis—Short-Term Station Blackout Simulation of Surry Nuclear Power Plant

Wang, Jun; Mccabe, Mckinleigh; Haskin, Troy Christopher; Wu, Yingwei; Su, G.H.; Corradini, Michael L.

doi:10.1115/1.4040887

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Studies until recently have had to utilise assumptions regarding the melting point for the FeCrAl cladding and its oxide for analysis of severe accident scenarios. The recommended melting temperature of FeCrAl by ORNL [170] is about 1427 • C, and the melting temperature of FeCrAl oxides is up to 1627 • C. Recent experimental studies [171] provide more precise information about the transition temperatures in the Fe-Cr-Al phase diagram. There is apparently no experimental data related to oxidation in steam at temperatures higher than the melting point.…”

Section: Discussionmentioning

confidence: 99%

Corium Experimental Thermodynamics: A Review and Some Perspectives

Barrachin

2021

Thermo

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More than 30 years ago a specialist meeting was held at Joint Research Center Ispra (Italy) from 15 to 17 January 1990 to review the current understanding of chemistry during severe accidents in light water reactors (LWR). Let us consider that, at the end of the 1980s, thermodynamics introduced in the severe accident codes was really poor. Only some equilibrium constants for a few simple reactions between stoichiometric compounds were used as well as some simple correlations giving estimates of solidus and liquidus temperatures. In the same time, the CALPHAD method was developed and was full of promise to approximate the thermodynamic properties of a complex thermochemical system by the way of a critical assessment of experimental data, a definition of a simple physical model and an optimisation procedure to define the values of the model parameters. It was evident that a nuclear thermodynamic database had to be developed with that new technique to obtain quite rapidly prominent progress in the knowledge of thermochemistry in the severe accident research area. Discussions focused on the important chemical phenomena that could occur across the wide range of conditions of a damaged nuclear plant. The most pressing need for improved chemical models is identified with condensed phase mixtures to model the corium progression. This paper reviews more than 30 years of experimental data production in the field of corium thermodynamics. This work has been conducted through multiple international programs (EURATOM, ISTC, OECD) as well as through more specific studies conducted at the national scale. This research has been capitalised in specific databases such as NUCLEA and TAF-ID, databases developed at IRSN and at CEA, respectively, and are now used in degradation models of the severe accident simulation codes. This research is presented in this paper. In the conclusion, we outline the research perspectives that need to be considered in order to address today’s and tomorrow’s issues.

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Section: Discussionmentioning

confidence: 99%

Corium Experimental Thermodynamics: A Review and Some Perspectives

Barrachin

2021

Thermo

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“…Work on modeling FeCrAl clad ATF using MELCOR version 1.86 has been already completed [45] and [46]. However, due to significant differences in modeling approach between MELCOR 1.86 and MELCOR 2.2, many of the methods developed in this previous work were not suitable for a direct application in the NRC Zion model for this study.…”

Section: Fecral and Fecral Oxide Definitionmentioning

confidence: 99%

Safety Analysis for Accident Tolerant Fuels with Increased Enrichment and Extended Burnup

Choi

Ogujiuba

Rollins

et al. 2022

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“…So, it is necessary to study hydrogen embrittlement on certain materials. FeCrAl alloys are among them because they are considered as the promising accident-tolerant fuel (ATF) cladding candidates for light water reactors (LWRs) due to their excellent properties (Wang et al, 2018). The cladding gets in contact with hydrogen when under service conditions.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Atom and Molecule Adsorptions on FeCrAl (100) Surface: A First-Principle Study

Li¹,

Ma²,

Zhou³

et al. 2021

Front. Energy Res.

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FeCrAl alloys are promising accident-tolerant fuel (ATF) cladding materials for applications in light water reactors (LWRs). Despite the excellent mechanical and antioxidation properties, this series of iron-based alloys has poor hydrogen embrittlement (HE) resistance due to the strong hydrogen uptaking ability. The hydrogen embrittlement effect can cause the degradation and premature failure of the material, and this effect can be enhanced by the high-temperature/high-pressure/high-irradiation environment in reactors. So, the potential danger should be taken seriously. In this paper, we have studied the hydrogen atom and molecule adsorptions on both Fe (100) and FeCrAl (100) surfaces to discover how the hydrogen atom and molecule (H/H2) interact with the Fe and FeCrAl (100) surface in the first place. The results show that there are strong element effects on the FeCrAl surface. The Al atom itself has no interaction with hydrogen. When the Al atom is beside the Fe atom, this Fe atom has a slightly lower interaction with hydrogen. However, the Al atom beside the Cr atom will enhance the hydrogen interaction with this Cr atom. On the other hand, when the Cr atom is beside the Fe atom, these two atoms (Fe–Cr bridge site) can reduce the interactions with H. In addition, when two Cr and two Fe atoms together make a four-fold site (FF site), the two Cr atoms can increase the interaction of the two Fe atoms with H. The element effects discovered can be a good guide for making hydrogen prevention coatings.

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Iron–Chromium–Aluminum (FeCrAl) Cladding Oxidation Kinetics and Auxiliary Feedwater Sensitivity Analysis—Short-Term Station Blackout Simulation of Surry Nuclear Power Plant

Cited by 5 publications

References 18 publications

Corium Experimental Thermodynamics: A Review and Some Perspectives

Corium Experimental Thermodynamics: A Review and Some Perspectives

Safety Analysis for Accident Tolerant Fuels with Increased Enrichment and Extended Burnup

Hydrogen Atom and Molecule Adsorptions on FeCrAl (100) Surface: A First-Principle Study

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