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The Limitations of an Air-Oxidation Breakaway Model to Predict a Zirconium Fire in a Spent Nuclear Fuel Pool Accident

Author

Listed:
  • Sanggil Park

    (Nuclear Energy Team, Lee & Ko, Seoul 04532, Korea)

  • Min Bum Park

    (Department of Energy and Chemical Engineering, Incheon National University, Incheon 22012, Korea)

Abstract

The OECD/NEA Spent Fuel Pool (SFP) project was conducted to investigate consequences of spent nuclear fuel pool accident scenarios. From the project, it was observed that cladding temperature could abruptly increase at a certain point and the cladding was completely oxidized. This phenomenon was called a “zirconium fire”. This zirconium fire is one of the crucial concerns for spent fuel pool safety under a postulated loss of coolant accident scenario, since it would lead to an uncontrolled mass release of fission products into the environment. To capture this critical phenomenon, an air-oxidation breakaway model has been implemented in the MELCOR code. This study examines this air-oxidation breakaway model by comparing the SFP project test data with a series of MELCOR code sensitivity calculation results. The air-oxidation model parameters are slightly altered to investigate their sensitivities on the occurrence of the zirconium fire. Through such sensitivity analysis, limitations of the air-oxidation breakaway model are identified, and needs for model improvement is recommended.

Suggested Citation

  • Sanggil Park & Min Bum Park, 2019. "The Limitations of an Air-Oxidation Breakaway Model to Predict a Zirconium Fire in a Spent Nuclear Fuel Pool Accident," Sustainability, MDPI, vol. 11(22), pages 1-8, November.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:22:p:6364-:d:286288
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    Cited by:

    1. Sanggil Park & Jaeyoung Lee & Min Bum Park, 2021. "A Study of Prediction Model Improvement for Air-Oxidation Breakaway in a Postulated Spent Nuclear Fuel Pool Complete Loss of Coolant Accident," Sustainability, MDPI, vol. 13(3), pages 1-7, January.

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