Detail publikačního výsledku

Impact of fecral oxide composition on severe accident progression in MELCOR

HAMŘÍK, L.; MIČIAN, P.; FORAL, Š.; KATOVSKÝ, K.; MÁCA, P.; VOJÁČKOVÁ, J.

Originální název

Impact of fecral oxide composition on severe accident progression in MELCOR

Anglický název

Impact of fecral oxide composition on severe accident progression in MELCOR

Druh

Článek Scopus

Originální abstrakt

Experimental studies have shown that the composition of the oxide layer forming on FeCrAl surface depends strongly on the temperature of the environment, with varying fractions of aluminum, chromium, and iron oxides forming under different conditions.In this work, multiple oxide compositions were incorporated into MELCOR simulations for evaluation of their impact on cladding degradation. The weight fractions of aluminum, chromium, and iron oxides were derived from published experimental data, serving as basis for modifications of the material model.Simulations of a representative Loss of Coolant Accident scenario show that these changes significantly affect cladding temperature evolution, oxidation progression, and hydrogen generation. These results highlight the need to account for environmentally dependent behavior when modeling advanced cladding materials in integral codes.

Anglický abstrakt

Experimental studies have shown that the composition of the oxide layer forming on FeCrAl surface depends strongly on the temperature of the environment, with varying fractions of aluminum, chromium, and iron oxides forming under different conditions.In this work, multiple oxide compositions were incorporated into MELCOR simulations for evaluation of their impact on cladding degradation. The weight fractions of aluminum, chromium, and iron oxides were derived from published experimental data, serving as basis for modifications of the material model.Simulations of a representative Loss of Coolant Accident scenario show that these changes significantly affect cladding temperature evolution, oxidation progression, and hydrogen generation. These results highlight the need to account for environmentally dependent behavior when modeling advanced cladding materials in integral codes.

Klíčová slova

ATF cladding; FeCrAl; LOCA; severe accident; MELCOR

Klíčová slova v angličtině

ATF cladding; FeCrAl; LOCA; severe accident; MELCOR

Autoři

HAMŘÍK, L.; MIČIAN, P.; FORAL, Š.; KATOVSKÝ, K.; MÁCA, P.; VOJÁČKOVÁ, J.

Vydáno

29.12.2025

Periodikum

Acta Polytechnica CTU Proceedings

Číslo

55

Stát

Česká republika

Strany od

25

Strany do

32

Strany počet

8

URL

https://ojs.cvut.cz/ojs/index.php/APP/article/view/11138/7547

BibTex

@article{BUT200098,
  author="{} and Lukáš {Hamřík} and  {} and Peter {Mičian} and  {} and Štěpán {Foral} and  {} and Karel {Katovský} and  {} and Pavel {Máca} and  {} and Jitka {Vojáčková}",
  title="Impact of fecral oxide composition on severe accident progression in MELCOR",
  journal="Acta Polytechnica CTU Proceedings",
  year="2025",
  number="55",
  pages="25--32",
  doi="10.14311/app.2025.55.0025",
  url="https://ojs.cvut.cz/ojs/index.php/APP/article/view/11138/7547"
}