Dissolution of UO2 in molten Zircaloy-4 Part 2: Phase evolution during dissolution and cooling

Hayward, Peter; George, I. M.

doi:10.1016/0022-3115(94)90196-1

Cited by 24 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Short-term leach tests do not provide enough time for the growth of secondary mineral-like phases. Therefore, such an important process is usually not taken into account in the models [ 64 , 65 , 66 , 67 , 68 , 69 ], although uranyl phases are obviously less stable than U oxide.…”

Section: Discussionmentioning

confidence: 99%

Evolution of Chernobyl Corium in Water: Formation of Secondary Uranyl Phases

et al. 2023

View full text Add to dashboard Cite

Two crystalline phases, which are analogues of common secondary uranyl minerals, namely, becquerelite (Ca[(UO2)6O4 (OH)6]·8H2O) and phurcalite (Ca2[(UO2)3O2 (PO4)2]·7H2O) were identified on the surface of a Chernobyl corium-containing sample affected by hydrothermal alteration in distilled water at 150 °C for one year. Phases were characterized using Single-Crystal X-ray Diffraction Analysis (SCXRD) as well as optical and scanning electron microscopy. Features of the structural architecture of novel phases, which come from the specific chemical composition of the initial fragment of Chernobyl sample, are reported and discussed. Precise identification of these phases is important for modelling of severe nuclear accidents and their long-term consequences, including expected corium–water interaction processes at three damaged Units of the Nuclear Power Plant Fukushima Daiichi.

show abstract

Section: Discussionmentioning

confidence: 99%

Evolution of Chernobyl Corium in Water: Formation of Secondary Uranyl Phases

et al. 2023

View full text Add to dashboard Cite

show abstract

“…2) [93][94][95][96][97][98][99][100][101]. For instance, $45% of the fuel in the TMI-2 core was liquefied in the accident [102], while smaller amounts were observed in the integral tests including 15-18% in the four PBF SFD tests and 15% in the LOFT FP-2 test [42].…”

Section: Comparison Of Integral Experimentsmentioning

confidence: 98%

Overview of experimental programs on core melt progression and fission product release behaviour

Lewis

Dickson

Iglesias

et al. 2008

Journal of Nuclear Materials

View full text Add to dashboard Cite

“…The driving force for the reaction is diffusion of oxygen from the UO 2 into the sheathing. This process has been extensively studied in single-effect laboratory crucible experiments, and models of the kinetics of the phenomenon have been proposed [168,[170][171][172][173][174][175][176][177][178][179][180][181][182][183][184][185][186].…”

Section: Moalem and Olandermentioning

confidence: 99%