Tuesday February 23rd 2021
| Registration | 8:00 – 8:30 |
| Conference opening and welcome speech | 8:30 – 8:45 |
| General session on DBA and SA long-term management strategies | 8:45 – 10:00 |
| Coffee break | 10:00 – 10:30 |
| General session on DBA and SA long-term management strategies | 10:30 – 12:00 |
| Lunch | 12:00 – 13:00 |
| Technical session 1: Debris generation and transport | 13:00 – 14:30 |
| Coffee break | 14:30 – 15:00 |
| Technical session 1: Debris generation and transport | 15:00 – 16:30 |
| Festive dinner | 19:00 – 22:00 |
Wednesday February 24th 2021
| Technical session 2: Filtration systems performance, clogging issues | 8:30 – 10:00 |
| Coffee break | 10:00 – 10:30 |
| Technical session 2: Filtration systems performance, clogging issues | 10:30 – 12:00 |
| Lunch | 12:00 – 13:00 |
| Technical session 3: Operational conditions, including severe accidents and systems reliability | 13:00 – 14:30 |
| Coffee break | 14:30 – 15:00 |
| Technical session 3: Operational conditions, including severe accidents and systems reliability | 15:00 – 16:30 |
Thursday February 25th 2021
| Concluding session: Synthesis of technical discussions and needs for further research | 8:30 – 10:00 |
| Coffee break | 10:00 – 10:30 |
| Concluding session: Synthesis of technical discussions and needs for further research | 10:30 – 12:00 |
| Lunch | 12:00 – 13:00 |
| Visit of VUEZ facilities | 13:00 – 15:00 |
General session on DBA and SA long-term management strategies:
The general session will tentatively be organized with four invited speakers with the objective to provide background on:
- Standards and safety requirements/expectations for core and containment cooling
- Long term management strategies of core and containment cooling during accidents
- Core and containment cooling issues for Design Basis Accident (DBA) and for Severe Accident (SA).
- Review of the R&D research in the fields and remaining open issues
- Status of implementation of Fukushima Daïchi lessons learnt
- Approaches for new small and large reactor design incorporating the Fukushima Daïchi lessons
Technical session 1: Debris generation and transport
This session will cover both experimental, modeling and reactor application related to the following topics:
- Debris generation in both DBA and SA conditions (coating material degradation, concrete, corrosion productsy…)
- Influence of jet shifts on the release of debris for a pipe break
- Characterization of generated debris (composition, size, fragmentation,…)
- Debris transport mechanisms
- Fukushima lessons learnt (large amount of debris and sediments that affect long term management)
Technical session 2: Filtration systems performance, clogging issues
This session will cover both experimental, modeling and reactor application related to the following topics:
- ECCS performance in long term accident conditions
- Effect of solid debris as well as chemical effects, which can cause gelatinous material, on filtration system performance
- Influence of the thin bed effect on head loss across the screen
- Influence of large amount of debris and sediments on long term accident – Fukushima lessons learnt
- System improvement
- Accident management measures (In vessel Melt Retention, mobile water cooling system)
- Fukushima lessons learnt (Filtration systems upgrade in existing reactors)
- Status of filtration system implementation in the new small and large reactor design
Technical session 3: Operational conditions, including severe accidents, and systems reliability
This session will cover both experimental, modeling and reactor application related to the following topics:
- Long term behavior
- Pressure drop
- Material corrosion
- Chemical reaction, allowing the debris bed to be packed more densely
- Debris and fibers interaction,…
- System improvement (passive cooling system,…)
- Accident management measures (IVR, mobile water cooling systems,…)
- Fukushima lessons learnt (system upgrade)
- Innovative systems and strategies implementation in new small and large reactor design
Concluding session: Synthesis of technical discussions and needs for further research
