| NPP | Nuclear Power Plant |
| PWR | Pressurized Water Reactor |
| BWR | Boiling Water Reactor |
| LWR | Light Water Reactor |
| PECM | Phase Change Effective Convectivity Model |
| CFD | Computational Fluid Dynamics |
| RPV | Reactor Pressure Vessel |
| IVMR | In-vessel Melt Retention |
| SA | Severe Accident |
| SAM | Severe Accident Management |
| ERVC | External Reactor Vessel Cooling |
| DNS | Direct Numerical Method |
| FEM | Final Element Method |
| CHF | Critical Heat Flux |
| LOCA | Loss of Coolant Accident |
| SIMECO | Simulation of Melt Coolability |
| COPO | Corium Pool (experimental program) |
| BALI | Bain Liquide (experimental program) |
| LIVE | Large Scale Experiment on In-Vessel Retention |
| MASCA | Material Scaling project (experimental program) |
| VVER | Vodo-Vodyanoi Energeticheshy Reactor |
| COPRA | Corium Pool Research Apparatus |