Prototypical experiments relating to air oxidation of Zircaloy-4 at high temperatures
Source abstract
Abstract
Abstract The mechanism of the reaction between Zircaloy-4 and air at temperatures from 800 to 1500 °C was studied. Air attack under prototypical conditions with air ingress during a hypothetic severe nuclear reactor accident was investigated. Oxidation in air and in air and nitrogen-containing atmospheres leads to a major degradation of the cladding material. The main mechanism is the formation of zirconium nitride and its re-oxidation. Pre-oxidation in steam prevents air attack as long as the oxide scale is intact. Under steam/oxygen starvation conditions, the oxide scale is reduced and significant external nitride formation takes place. When modeling air ingress in severe accident computer codes, parabolic correlations for oxidation in air may be applied only for high temperatures (>1400 °C) and for pre-oxidized cladding (⩾1100 °C). Under all other conditions, faster, rather linear reaction kinetics should be applied.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Nuclear reactor physics and engineering · Nuclear Engineering Thermal-Hydraulics
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References (14)
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1. D.A. Powers, L.N. Kmetyk, R.C. Schmidt, A Review of Technical Issues of Air Ingression during Severe Reactor Accidents, Report NUREG/CR-6218, SAND94-0731, Sandia National Lab., 1994.
2. I. Shepherd et al., Oxidation Phenomena in Severe Accidents (OPSA), Final Report, INV-OPSA(99)-P008, 2000.
3. Shepherd · Nucl. Eng. Des. · 2001 · 209 · 10710.1016/S0029-5493(01)00393-4 ↗
4. K. Natesan, W.K. Soppet, S. Basu, Low Temperature Air Oxidation Experiments at ANL, CSARP Meeting, Crystal City, VA, 3–4 May 2004.
5. P. Giordano, C. Séropian, The Air Ingress Issue for PWRs, Fifth Technical Seminar on the Phebus FP Programme, Aix-en-Provence, June 2003.
6. Duriez · J. Nucl. Mater. · 2008 · 380 · 3010.1016/j.jnucmat.2008.07.002 ↗
7. Steinbrück · Nucl. Eng. Des. · 2006 · 236 · 170910.1016/j.nucengdes.2006.04.010 ↗
8. Duriez · Nucl. Eng. Des. · 2009 · 239 · 24410.1016/j.nucengdes.2008.10.017 ↗
9. G. Schanz, M. Heck, Z. Hozer, L. Matus, I. Nagy, L. Sepold, U. Stegmaier, M. Steinbrück, H. Steiner, J. Stuckert, P. Windberg, Results of the QUENCH-10 Experiment on Air Ingress, Forschungszentrum Karlsruhe, Report FZKA 7087, 2006.
10. M. Steinbrück, U. Stegmaier, T. Ziegler, Prototypical Experiments on Air Oxidation of Zircaloy-4 at High Temperatures, Forschungszentrum Karlsruhe, Report FZKA 7257, 2007.
11. G. Schanz, S. Leistikow, in: Eighth International Congress on Metallic Corrosion, Mainz, Germany, ICC/EFC Proceedings, vol. 2, DECHEMA, 1981, p.1712.
12. J. Stuckert, M.V. Veshchunov, Behaviour of Oxide Layer of Zirconium-Based Fuel Rod Cladding under Steam Starvation Conditions, Forschungszentrum Karlsruhe, FZKA 7373, 2008.
13. Massalski · 1990
14. N. Vér, Determination of kinetic parameters of the oxidation of zirconium alloys in steam/air mixtures, Report AEKI-FRL-2007-401-01/01, Budapest, 2007.