Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Stratified steam explosion energetics

  • Jo, HangJin (Department of Engineering Physics, University of Wisconsin) ;
  • Wang, Jun (Department of Engineering Physics, University of Wisconsin) ;
  • Corradini, Michael (Department of Engineering Physics, University of Wisconsin)
  • Received : 2018.05.03
  • Accepted : 2018.08.24
  • Published : 2019.02.25
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Abstract

Vapor explosions can be classified in terms of modes of contact between the hot molten fuel and the coolant, since different contact modes may affect fuel-coolant mixing and subsequent vapor explosion energetics. It is generally accepted that most vapor explosion phenomena fall into three different modes of contact; fuel pouring into coolant, coolant injection into fuel and stratified fuel-coolant layers. In this study, we review previous stratified steam explosion experiments as well as recent experiments performed at the KTH in Sweden. While experiments with prototypic reactor materials are minimal, we do note that generally the energetics is limited for the stratified mode of contact. When the fuel mass involved in a steam explosion in a stratified geometry is compared to a pool geometry based on geometrical aspects, one can conclude that there is a very limited set of conditions (when melt jet diameter is small) under which a steam explosion is more energetic in a stratified geometry. However, under these limited conditions the absolute energetic explosion output would still be small because the total fuel mass involved would be limited.

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References

  1. M.L. Corradini, B.J. Kim, M.D. Oh, Vapor explosions in light water reactors: a review of theory and modeling, Prog. Nucl. Energy 22 (1988) 1-117. https://doi.org/10.1016/0149-1970(88)90004-2
  2. D.F. Fletcher, R.P. Anderson, A review of pressure-induced propagation models of the vapour explosion process, Prog. Nucl. Energy 23 (1990) 137-179. https://doi.org/10.1016/0149-1970(90)90010-3
  3. M.L. Corradini, R.P. Taleyarkhan, Vapor explosions: a review of experiments for accident analysis, Nucl. Saf. 32 (1991).
  4. D.F. Fletcher, A review of the available information on the triggering stage of a steam explosion, Nucl. Saf. 35 (1994).
  5. T.G. Theofanous, M. Saito, An assessment of Class-9 (core-melt) accidents for PWR dry-containment systems, Nucl. Eng. Des. 66 (1981) 301-332. https://doi.org/10.1016/0029-5493(81)90162-X
  6. M. Pilch, Acceleration Induced Fragmentation of Liquid Drops, 1982.
  7. C.C. Chu, M.L. Corradini, One-dimensional transient fluid model for fuel/coolant interaction analysis, Nucl. Sci. Eng. 101 (1989) 48-71. https://doi.org/10.13182/NSE89-A23594
  8. K.H. Bang, M.L. Corradini, Vapor explosions in a stratified geometry, Nucl. Sci. Eng. 108 (1991) 88-108. https://doi.org/10.13182/NSE91-A23809
  9. M. Berman, Light Water Reactor Safety Research Program Quarterly and Semiannual Report, October 1983-March 1984, NUREG/CR-4459, SAND-85-2500, Sandia National Laboratory, 1986.
  10. R. Silverii, D. Magallon, FARO LWR Programmeetest L-31 Data Report, Technical Note, European Commission Joint Research Centre ISPRA, 1999. No. I. 99.
  11. R. Anderson, D. Armstrong, D. Cho, A. Kras, Experimental and Analytical Study of Vapor Explosions in Stratified Geometries, Argonne National Lab, IL (USA), 1988.
  12. A. Konovalenko, A. Karbojian, P. Kudinov, Experimental results on pouring and underwater liquid melt spreading and energetic melt-coolant interaction, in: The 9th International Topical Meeting on Nuclear Thermal-Hydraulics, Operation and Safety (NUTHOS-9), Kaohsiung, Taiwan, September 9-13, American Nuclear Society, 2012.
  13. D. Grishchenko, A. Konovalenko, A. Karbojian, V. Kudinova, S. Bechta, P. Kudinov, Insight into steam explosion in stratified melt-coolant configuration, in: 15th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-15, 12 to 17 May, 2013, Pisa, Italy, 2013.
  14. P. Kudinov, D. Grishchenko, A. Konovalenko, A. Karbojian, S. Bechta, Investigation of steam explosion in stratified melt-coolant configuration, in: The 10th International Topical Meeting on Nuclear Thermal-Hydraulics, Operation and Safety (NUTHOS-10), 2014, pp. 14-18.
  15. J. Tang, M.L. Corradini, Modelling of the Complete Process of One-dimensional Vapor Explosions, 1994.
  16. B.-J. Kim, Heat Transfer and Fluid Flow Aspects of a Small Scale Single Droplet Fuel-coolant Interaction, Wisconsin Univ., Madison (USA), 1985.
  17. M.D. Oh, M.L. Corradini, A propagation/expansion model for large scale vapor explosions, Nucl. Sci. Eng. 95 (1987) 225-240. https://doi.org/10.13182/NSE87-A20452
  18. L.S. Nelson, P.M. Duda, Steam Explosion Experiments with Single Drops of Iron Oxide Melted with a CO/sub 2/laser. Part II. Parametric Studies, Sandia National Labs, Albuquerque, NM (USA), 1985.
  19. R.H. Chen, M.L. Corradini, G.H. Su, S.Z. Qiu, Analysis of KROTOS steam explosion experiments using the improved fuel-coolanteinteraction code Texas-VI, Nucl. Sci. Eng. 174 (2013) 46-59. https://doi.org/10.13182/NSE12-22

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