Applicability of quenching meshes for the control of hydrogen combustion in nuclear power plants under severe accident has been investigated experimentally. The effects of initial pressure in hydrogen/air mixtures on quenching distances have been first measured to provide basic data. It has been found that the quenching distance has its minimum near stoichiometry and can be approximated to be inversely proportional to initial pressure. Small-scale experiments were conducted to identify the applicability of quenching meshes for the control of hydrogen combustion in a closed system where hydrogen combustion leads to pressure rise. Simplified phenomenological analysis has also been performed to identify parameters that govern the performance of quenching meshes. It has been experimentally substantiated that quenching meshes could effectively confine hydrogen combustion in a compartment when hot gaseous jet ejection can be mitigated.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Materials Science(all)
- Safety, Risk, Reliability and Quality
- Waste Management and Disposal
- Mechanical Engineering