Technical Meeting on the Safety Approach for Liquid Metal Cooled Fast Reactors and the Analysis and Modelling of Severe Accidents

13 Mar 2023, 09:00 → 17 Mar 2023, 17:00 Europe/Vienna

CR4 (IAEA)

Objectives

The objective of the event is to provide a platform for Member States to exchange information on the design of liquid metal cooled fast reactors, with regard to the general approach to design safety and the consideration of severe accidents in the design and safety assessment of sodium cooled and lead cooled innovative reactors, with an emphasis on analysis and modelling of severe accidents.

The event will discuss experiences and technological challenges related to the safety approaches used in the design and safety assessment of LMFRs, including consideration of the relevant severe accident phenomena, models and tools used for the design and safety analyses of LMFRs, as well as regulatory and licensing aspects.

The IAEA intends to develop a new publication (TECDOC) to compile the outcomes of the meeting and address the analysis and modelling of severe accidents for Liquid Metal Cooled Fast Reactors. In addition, the meeting will contribute to the ongoing development of a TECDOC on considerations on the safety of Liquid Metal Cooled Fast Reactors.

 

 

EVT2204904_Form-A_final.docx

EVT2204904_Form-B_final.docx

EVT2204904_Form-C_final.docx

Full Paper Template.docx

Information_Sheet_EVT2204904.pdf

Monday, 13 March

10:00 → 10:50 Opening Session

10:00 IAEA Welcome Remarks

Speaker: Ms Ana Gomez Cobo (IAEA, SH-SAS)

10:15 Objective of the Meeting

Speakers: Mr Simone Massara (IAEA, SAS), Mr Vladimir Kriventsev (IAEA, NPTDS)

10:30 Administrative Remarks

Introduction of the participants
Approval of the agenda
Appointment of the chairs

Speakers: Ms Gaeul Choi (IAEA, SAS), Ms Lara PEGUERO (IAEA, SAS), Ms Nikoleta MORELOVA (IAEA, NPTDS)

10:50 → 11:15 Technical Session 1.1: Related IAEA and International Activites

Conveners: Mr Simone Massara (IAEA, SAS), Mr Vladimir Kriventsev (IAEA, NPTDS)

10:50 Consideration of Non-Water Cooled Reactors and SMR Safety in the IAEA Safety Standards

Speaker: Ms Ana Gomez Cobo (IAEA, SH-SAS)

11:15 → 11:40 Coffee Break

11:40 → 12:40 Technical Session 1.1: Related IAEA and International Activites

Conveners: Mr Simone Massara (IAEA, SAS), Mr Vladimir Kriventsev (IAEA, NPTDS)

11:40 IAEA activities in the field of fast reactor technology

Speaker: Mr Vladimir Kriventsev (IAEA, NPTDS)

2023-03-13_IAEA-FR_Activities.pdf

12:10 Development of Safety Design Criteria and Safety Design Guidelines for the Sodium cooled Fast Reactor within the Generation IV International Forum

Speaker: Mr Shigenobu Kubo (JAEA, Japan)

12:40 → 14:00 Lunch Break

14:00 → 15:30 Technical Session 1.2: Safety Approach for SFR

Conveners: Mr Frédéric Bertrand (CEA, France), Mr Shigenobu Kubo (JAEA, Japan)

14:00 Prevention and Mitigation Measures for Severe Accidents of China Fast Reactor

Speakers: Mr Fangyuan Xue (CIAE, China), Mr Zhang Xisi (CIAE, China)

14:30 Consideration of severe accidents in the past French SFR program

Speaker: Mr David Settimo (EDF, France)

15:00 ARC-100 Commercial Demonstration Unit Optimizations for Decay Heat Removal Systems to Accommodate Accident Scenarios

Speaker: Mr Nicholas McTiernan (ARC Clean Technology, Canada)

15:30 → 16:00 Coffee Break

16:00 → 17:00 Technical Session 1.2: Safety Approach for SFR

Conveners: Mr Frédéric Bertrand (CEA, France), Mr Shigenobu Kubo (JAEA, Japan)

16:00 Sodium Fast Reactor Severe Accident Prevention and Mitigation Strategy: U.S. Perspective

Speaker: Mr Matthew Bucknor (ANL, USA)

Bucknor_US Strategy_public.pptx

17:00 → 17:15 Discussion & Wrap Up Day 1

Tuesday, 14 March

09:30 → 10:30 Technical Session 1.2: Safety Approach for SFR

Conveners: Mr Frédéric Bertrand (CEA, France), Mr Shigenobu Kubo (JAEA, Japan)

09:30 Consideration on safety design approach for future SFRs in Japan, featuring prevention and mitigation of a severe accident

Speaker: Mr Shigenobu Kubo (JAEA, Japan)

10:00 Mitigation of severe accident by design: strategy and study approach

Speaker: Mr Frédéric Bertrand (CEA, France)

10:30 → 10:45 Discussion & Session Wrap Up

10:45 → 11:15 Coffee Break

11:15 → 12:30 Technical Session 2.1: Severe Accident Analysis and Experimental Validation of SFR​ - Part I

Conveners: Mr Frédéric Payot (CEA, France), Mr Yoshiharu Tobita (JAEA, Japan), Ms Dalin Zhang (Xi’an Jiaotong University, China)

11:15 Towards an integrated French software platform for severe accident simulation in SFR

Speaker: Mr Pierre Gubernatis (CEA, France)

Code_CouplingiIAEA_LMFBR_Safety_March2023.pptx

12:00 CEA Experimental Roadmap for Sodium Fast Reactor Severe Accident R&D

Speaker: Mr Christophe Journeau (CEA, France)

12:30 → 13:45 Lunch Break

13:45 → 15:45 Technical Session 2.1: Severe Accident Analysis and Experimental Validation of SFR​ - Part I

Conveners: Mr Frédéric Payot (CEA, France), Mr Yoshiharu Tobita (JAEA, Japan), Ms Dalin Zhang (Xi’an Jiaotong University, China)

13:45 Development of analysis methods for SFR severe accidents in JAEA and assessment of applicability to safety analysis

Speaker: Mr Yoshiharu Tobita (JAEA, Japan)

Presentation IAEA Meeting_#10.pdf

14:15 3D Thermalhydraulics-neutronics simulation of SFR core degradation with the SEASON French Platform

Speaker: Ms Emmanuelle Dufour (CEA, France)

[29]-SEASON_Emmanuelle_DUFOUR.pptx

14:45 The Simplified Radionuclide Transport (SRT) Code for the Source Term Assessment of Pool-Type Metal Fuel Sodium Fast Reactor Severe Accidents

Speaker: Mr Matthew Bucknor (ANL, USA)

Bucknor_SRT.pptx

15:15 SFRs severe accident transient study with new particle flow model in SIMMER-V

Speaker: Ms Andrea Bachrata (CEA, France)

15:45 → 16:15 Coffee Break

16:15 → 17:30 Panel 1: Status of knowledge and challenges for the consideration of severe accidents for SFR

17:30 → 17:35 Wrap Up Day 2

Wednesday, 15 March

09:30 → 11:30 Technical Session 1.3: Safety Approach for LFR

Convener: Mr Olivier Baudrand (IRSN, France)

09:30 Safety approach of the Westinghouse lead fast reactor

Speaker: Mr Jun Liao (Westinghouse Electric Company, USA)

10:00 An introduction to NewCleo LFR design and initial safety considerations

Speaker: Mr Andrea Barbarino (NewCleo, Italy)

10:30 ENEA contribution to the development of GIF Safety Design Criteria for LFR

Speaker: Mr Mattia Massone (ENEA, Italy)

11:00 MYRRHA Pre-licensing Nuclear Safety Approach

Speaker: Ms Irina Sanda (SCK CEN, Belgium)

11:30 → 11:50 Coffee Break

11:50 → 13:05 Technical Session 2.2: Initiation and Transition Phases of Severe Accidents of SFR

Conveners: Mr Matthew Bucknor (ANL, USA), Ms Thangavel Sathiyasheela (IGCAR, India)

11:50 Status of the SAS4A code metallic fuel models for the simulation of severe accidents in liquid metal cooled fast reactors

Speaker: Mr Adrian Tentner (ANL, USA)

Presentation IAEA-CN-328-46 Severe Accdents Meeting v02 2023-03-08.pdf

12:35 Design features and safety assessment of a sodium-cooled fast reactor in Japan for mitigation of severe accidents

Speaker: Mr Hidemasa Yamano (JAEA, Japan)

IAEA-LMFR-SA_No.11_Japan_yamano_20230311.pdf

11:50 → 12:50 Technical Session 2.3: Accident Analysis and Experimental Programs for LFR​

Conveners: Mr Guy Scheveneels (SCK CEN, Belgium), Mr Simone Gianfelici (ENEA, Italy)

11:50 Severe accidents investigations for lead fast reactors in Romania

Speaker: Mr Marin Constantin (RATEN ICN, Romania)

MConstantin Romania SA LFR Infrastructure Development.ppt

12:20 Modelling of the lead-cooled fast reactor accidents with the EUCLID/V2 multiphysics code

Speaker: Mr Dmitry Veprev (IBRAE RAS, Russian Federation)

ID047-2-3-02-Veprev.pptx

13:05 → 14:15 Lunch Break

14:15 → 16:05 Technical Session 2.2: Initiation and Transition Phases of Severe Accidents of SFR

Conveners: Mr Matthew Bucknor (ANL, USA), Ms Thangavel Sathiyasheela (IGCAR, India)

14:15 Status of numerical tool development for initiating phase in severe accidents of SFRs in Japan

Speaker: Mr Yoshitaka Fukano (JAEA, Japan)

Status of numerical tool development for initiating phase230310.pdf

14:45 Recent developments in modeling of severe accident analysis code PREDIS

Speaker: Mr Anuraj Vijayan Leela (IGCAR, India)

Recent developments in modeling of severe accident analysis code PREDIS.pptx

15:15 Development of fuel deformation module during Power and Flow Transient in Sodium Cooled Fast Reactor Core

Speaker: Mr Amandeep Singh (AERB, India)

15:45 Discussion & Session Wrap Up

14:15 → 16:15 Technical Session 2.3: Accident Analysis and Experimental Programs for LFR​

Conveners: Mr Guy Scheveneels (SCK CEN, Belgium), Mr Simone Gianfelici (ENEA, Italy)

14:15 Modeling of severe accidents for sodium and lead cooled reactors

Speaker: Ms Stanislava Senatorova (SEC NRS, Russian Federation)

Senatorova Danicheva SEC NRS.pdf

14:45 Development of drift-flux correlations for vertical forward bubble column-type gas-liquid lead-bismuth two-phase flow

Speaker: Mr Di Wang (China Nuclear Power Technology Research Institute Co., Ltd.)

【EVT2204904-WANG DI】 Development of drift-flux correlations for vertical forward bubble column-type gas-liquid lead-bismuth two-phase flow.pdf

【EVT2204904-WANG DI】 Development of drift-flux correlations for vertical forward bubble column-type gas-liquid lead-bismuth two-phase flow.pptx

15:15 Experimental and Modelling and simulation activities supporting the development of LFR technology

Speaker: Mr Alessandro Bellomo (ENEA, Italy)

15:45 Heat Transfer Characteristics of liquid metal Fast reactors

Speaker: Mr Abdelfattah Ali (EAEA, Egypt)

TM Presentation.pdf

16:15 → 16:40 Coffee Break

16:40 → 17:55 Panel 2: Status of development and challenges for LFR technology

17:55 → 18:00 Wrap Up Day 3

18:15 → 19:45 Social Event - Reception hosted by the IAEA

Thursday, 16 March

09:30 → 11:15 Technical Session 2.4: Accident Expansion Phase and Long Term Behavior in SFR

Conveners: Mr Andrei Rineiski (KIT, Germany), Mr Christophe Journeau (CEA)

09:30 Analysis of the remaining core material coolability in a SFR core

Speaker: Mr Joji Sogabe (JAEA, Japan)

IAEA-CDA2023-ID4_230310.pdf

10:00 Analysis methodologies for the evaluation of ATWS accident on SFR in JAEA - Mechanical consequences during expansion phase of the accident -

Speaker: Mr Yuichi Onoda (JAEA, Japan)

#39_ONODA_JAEA_R3.pdf

10:45 French research programs related to the severe accident phenomenology in the lower plenum of a SFR

Speaker: Mr Remi Clavier (CEA, France)

LowerPlenum.pptx

LowerPlenum.pptx

11:15 → 11:35 Coffee Break

11:35 → 12:05 Technical Session 2.4: Accident Expansion Phase and Long Term Behavior in SFR

Conveners: Mr Andrei Rineiski (KIT, Germany), Mr Christophe Journeau (CEA)

11:35 Development of an evaluation method for in-place cooling of a degraded core in severe accidents of sodium-cooled fast reactors

Speaker: Mr Yuya Imaizumi (JAEA, Japan)

6_Imaizumi r5.pptx

12:05 → 12:15 Discussion & Session Wrap Up

12:15 → 13:30 Lunch Break

13:30 → 14:30 Technical Session 3: Regulatory Experience and Activities

Conveners: Mr Olivier Baudrand (IRSN, France), Ms Ananya Mohanty (AERB, India)

13:30 Safety review experience of PFBR and development of Safety Code on Design of FBRs

Speaker: Ms Ananya Mohanty (AERB, India)

14:00 Assessment of severe accident for SFR projects developed in France

Speaker: Mr Olivier Baudrand (IRSN, France)

14:30 → 14:45 Discussion & Session Wrap Up

14:45 → 15:15 Coffee Break

15:15 → 17:15 Technical Session 2.1: Severe Accident Analysis and Experimental Validation of SFR​ - Part II

Conveners: Mr Frédéric Payot (CEA, France), Mr Yoshiharu Tobita (JAEA, Japan), Ms Dalin Zhang (Xi’an Jiaotong University, China)

15:15 ARDECO CEA-KIT cooperation on ASTRID safety studies and related code developments

Speaker: Mr Andrei Rineiski (KIT, Germany)

15:45 Design-oriented simulation tools in French SFR projects

Speakers: Ms Nathalie Seiler (CEA, France), Frédéric BERTRAND (CEA Cadarache)

16:15 Modern approaches to deterministic safety analysis for sodium fast reactors

Speaker: Mr Ruslan Chalyy (IBRAE RAS, Russian Federation)

16:45 → 17:00 Discussion & Session Wrap Up

17:00 → 17:05 Wrap Up Day 4

Friday, 17 March

09:45 → 11:15 Closing Session

09:45 Technical Meeting Wrap-Up Facilitated by Session Chairs

11:15 → 11:35 Coffee Break

11:35 → 12:30 Closing Session

11:35 Outputs from the Technical Meeting and General Discussion

Plans for the development of the two TECDOCs and advice for possible future IAEA activities.

Speakers: Mr Simone Massara (IAEA, SAS), Mr Vladimir Kriventsev (IAEA, NPTDS)

12:15 Closing Remarks by the IAEA

Speakers: Ms Aline DES CLOIZEAUX (IAEA, NENP Director), Ms Tatjana JEVREMOVIC (IAEA)