14th EMUG meeting, Ljubljana (Hybrid), 2023

The 14th EMUG was organized as a hybrid meeting from 12-14 April, 2023. It was hosted by the Reactor Engineering Division, Jožef Stefan Institute, in Ljubljana, Slovenia, in support of the Cooperative Severe Accident Research Programme (CSARP)

Presentations:

Title Speaker
Day1  
Welcome and introduction

Leon Cizelj, JSI
   
Session 1 MACCS Presentations  
MelMACCS – Converting MELCOR Output to MACCS Input Trey Hathaway, NRC
Automating the L.2-L.3 Interface: Lessons Learned from SOARCA and the NRC Site L.3 PRA Project Trey Hathaway, NRC
Experience from MACCS applications by the Slovak regulator Jan Husarcek, UJD SR
Informal WinMACCS and MelMACCS tutorial Trey Hathaway, NRC
   
Session 2: MELCOR Presentations  
MELCOR for Fusion application for cryogenic helium spill in fusion power plant Rok Krpan, JSI
Thermal-hydraulic and source term MELCOR studies for non-electrical applications HTGRs Eleonora Skrzypek, NCBJ
MELCOR 2.2 Nuclear Power Plant UQ study, lesson learned Mateusz Malicki, PSI
Severe Accident Simulations for LWR SMR with MELCOR 2.2 Piotr Darnowski, Institute of Heat Engineering WUT
   
Day2  
   
Session 3: MELCOR Users’ Workshop  
USNRC/SNL Introductions Shawn Campbell, USNRC / Larry Humphries, SNL
MELCOR overview Larry Humphries, SNL
MELCOR Development Status Larry Humphries, SNL
Considerations in Modeling Experiments Larry Humphries, SNL
Control Function Modeling Larry Humphries, SNL
Code Validation Larry Humphries, SNL
MELCOR Applications & Best Practices Kenneth C. Wagner, SNL
   
Day3  
   
Session 4: Overview of activities  
Application and special uses of MELCOR at NUBIKI L. Gábor Horváth, NUBIKI
Recent experience with MELCOR 2.2: Overview of applications at CIEMAT Monica Garcia, CIEMAT
Current MELCOR-related activities in Framatome Matthias Braun, Framatome
Recent experience with MELCOR Juraj Jancovic, VUJE
ENEA Activities in the Field of Severe Accidents by Using MELCOR Code Fulvio Mascari, ENEA
   
Session 5: Integral analysis and UQ  
MELCOR ML/IA UQ analyses David Luxat, SNL
Cross-walk study between MELCOR, ASTEC and MAAP: LB LOCA scenario and encountered modeling issues for the MELCOR 2.2.21402 Miroslav Kotouč, ÚJV Řež
Enhance MELCOR safety analysis by adopting RAVEN as a multi-purpose framework for UQ, data analysis, model optimization, and DET analysis. Matteo D’Onorio, Sapienza U. of Rome
Dynamic Event Tree analysis for accident sequences in fission and fusion reactors Tommaso Glingler, Sapienza U. of Rome
Sensitivity study of CVTR containment pressure behavior Jan Frelich, TES
SASPAM-SA (Safety Analyses of SMR with Passive Mitigation strategies - Severe Accident) Horizon Euratom Project Fulvio Mascari, ENEA
   
Session 6: IVMR, AI and scenario analysis  
Use of MELCOR code for IVMR analysis. Code assessment and other issues. (online) Yuriy Vorobyov, State Sc. & T. Center for Nucl.&Rad.Safe.
Modeling of radionuclide release from water pool during IVMR and recent issues encountered for the MELCOR 2.2 21402 release Jozef Baláž, ÚJV Řež
Analysis of Steam Generator Tube Rupture (SGTR) Accident for NPP Krško using MELCOR Code Vesna Benčik, FER Univ. Zagreb
Future Prospects of AI in Nuclear Engineering Including Modelling of Nuclear Accidents (online) Christopher Pain, Imperial College London