Containment safety

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Hydrogen Behavior in the Containment

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Objectives

  • Development of technology to evaluate accident management strategy for containment hydrogen mitigation
  • Experiment of hydrogen behavior and mitigation
  • Development and validation of multi-dimensional analysis code
  • Evaluation of accident management strategy for hydrogen mitigation

R&D Status

  • SPARC (Spray-Aerosol-Recombiner-Combustion) Test facility
  • Vessel wall temperature control system
  • gas concentration measurement system
  • gas injection system
  • Test of stratified helium mixing by jet flow
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SPARC test facility

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He concentration measurement

  • Model development and validation
  • Turbulence-resolved approach for hydrogen behaviors in a NPP containment
  • Modular development for analysis models
  • Validation of models with separate-effect tests
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FLAME F22 test simulation

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THAI3 HR-49 test simulation

Outcomes & Perspectives

  • Multi-dimensional analysis code for analysis of hydrogen behavior
  • Experimental data for validation of analysis models of hydrogen behaviors
  • Methodology for best-estimate analysis by integrating multi-dimensional and lumped-parameter analysis codes