The experts from TES attended Czech conference NUSIM and EMUG (European MELCOR User Group) Meeting. At both events they presented their results of MELCOR code assessment for Severe Accidents against THAI HR-1 experimental test performed on THAI Facility (Germany). Passive Safety Recombiner (PAR) model performance was assessed in severe accident conditions against HR-1 test data. PAR is a safety feature located in the containment of a nuclear power plant and it contributes to hydrogen removal in the containment. Hydrogen is produced during severe accidents and it is one of the most serious threats confirmed for example in frame of Fukushima Dai-Ichi accident.
MELCOR code assessment was performed within Czech – Korean joint project „Examination and improvement of mitigation capabilities and strategies of operating PWRs and an APR series PWR against Design Extension Conditions (DEC)“ which is co-financed from TACR in frame of DELTA2 funding. A new in-house methodology for modeling PAR in MELCOR was developed and validated by the experts of Nuclear Safety Department of TES in the framework of above activities.
