Bentaib, A.

Bréchignac, F.

Herranz, L. E.

Kljenak, I.

Miassoedov, A.

Paci, S.

Piluso, P.

Rocchi, F.

L. E. Herranz

A. Bentaib

F. Bréchignac

I. Kljenak

A. Miassoedov

S. Paci

P. Piluso

F. Rocchi

Archivio della Ricerca - Università di Pisa

25/03/201911 www.nugenia.org www.snetp.euwww.nugenia.orgNUGENIA is mandated by SNETP to coordinate nuclear Generation II & III R&DResearch Activities in NUGENIA-TA2:Severe AccidentsERMSAR 2019 Conference (Prague)March 18-20th, 2019L.E. Herranz (CIEMAT), A. Bentaib (IRSN), F. Bréchignac (IRSN), I. Kljenak(JSI), A. Miassoedov (KIT), S. Paci (Univ. of Pisa),       P. Piluso (CEA), F. Rocchi(ENEA),2 www.nugenia.org OUTLINE Context. Background Framework Present NUGENIA-TA2. Final Remarks.25/03/201923 www.nugenia.org Context4 www.nugenia.org Context The SARNET network (Severe Accident NETworkof excellence) was co-funded by EC from 2004 to2013 in FP6-FP7 and then integrated inNUGENIA. The main network activities are continuing inthe NUGENIA Technical Area N°2. As of Dec. 2018, TA2 coordination by CIEMATwas approved by NUGENIA Excom. This presentation is aimed at giving an update ofTA2, with particular emphasis on recent actionsand plans.25/03/201935 www.nugenia.org Background6 www.nugenia.org SARNET in Euratom (1/2) Coordinated by IRSN, gathered 50 partners (> 20countries, EU and non-EU). 250 researchers and 30 PhD students = work equivalent to 40 full-timepersons per year. FP7 project divided into the following WPs: ASTEC IRSN-GRS code development and assessment  Corium and debris coolability Molten corium concrete interaction Containment Source term Main end-products: Huge database and improved knowledge on phenomena Knowledge capitalization in the ASTEC code and in an experimental database based on JRC STRESA tool25/03/201947 www.nugenia.org SARNET in Euratom (2/2) Dissemination of knowledge 6 ERMSAR periodic conferences (100 to 150 participants) 6 Education & Training one-week courses (40 to 100 participants) Publication in 2011 of a 750-pages textbook on severe accidentphenomenology During the FP6-7 projects, publication of  200 papers in peer-reviewjournals and presentation of  400 lectures in internationalconferences Mobility programme for young researchers and students (52delegations with average duration of 3 months) Ranking of research priorities Periodic update to account for the results of recent research and,after 2011, for the impact of Fukushima Dai-ichi accidents This process led to define 20 issues of medium to high priority8 www.nugenia.org Framework25/03/201959 www.nugenia.org NUGENIA Association International non-profit association for collaborativeR&D on Gen. II-III nuclear systems (2011) More than 100 members from many countries (including out ofEurope Korea, Japan, USA and Canada) from industry, research, TSOsand academia. 8 technical areas (TA): plant safety and risk assessment, integrity ofstructures, fuel development…. and “Severe accidents” TA2 New NUGENIA R&D roadmap to be published in 2019 Update of SARNET ranking (2013) – ERMSAR 2019 paper based Main priority of R&D efforts to focus on improvement of prevention ofSA and on mitigation of their consequences, as underlined by theFukushima Dai-ichi accidents Towards a single nuclear platform (SNETP) NUGENIA keeps its “technical identity” and project management10 www.nugenia.org SARNET in NUGENIA Overall objectives remain: Integration of efforts of European R&D organisations in definition ofresearch priorities and of common research programmes, Capitalizing the knowledge (SOAR, simulation codes, databases), Bringing together top scientists in SA research to constitute a worldleadership position, Disseminating knowledge through E&T programmes and papers, tostudents and young researchers, and to new nuclear countries. But extension to emergency preparedness andresponse and SA impact on environment The main network activities are continuing: Technical workshops, ERMSAR, Education & Training courses Elaboration of new R&D projects (H2020 & in-kind types)25/03/2019611 www.nugenia.org TA2 Current Status12 www.nugenia.org Context TA2 coordinator (JPvD, IRSN) retired Fall. An election set in Summer 2018. Three candidates (CIEMAT, IRSN, TRACTEBEL) 45 organizations voted CIEMAT option was the most voted on. Deputy coordination set on IRSN. NUGENIA ExCom approval on Dec. 10th. First coordination meeting held on Jan. 17th.25/03/2019713 www.nugenia.org Introduction Coordination: CIEMAT (IRSN, Deputy) Sub-TA and leaders: 2.1 In-vessel corium/debris coolability (KIT) 2.2 Ex-vessel corium interactions-coolability (CEA) 2.3 Containment behaviour, incl. H2 risk (JSI) 2.4 Source term to the environment (CIEMAT) 2.5 Environmental Impact & emergency management (IRSN) 2.6 Severe accident scenarios (ENEA) Coordination of dissemination of knowledge: UNIPI14 www.nugenia.org TA2.1 & TA2.2: Corium/debris coolability Four subtopics Reflooding and coolability of a degraded core (REFCOOL) Remelting of debris, melt pool formation and coolability (MPF) Bringing research results into reactor application (COOL-RA) Spent fuel pool analysis (SFP)TA2.1 linked R&D projects SAFEST, ALISA, IVMR, FASTNET, CORE-SOAR, QUESAYearly review meetings since 2014CORDEB-2 experiments (©NITI, 2015)25/03/2019815 www.nugenia.org TA 2.1-TA2.2 Group Meetings: Yearly meetings : 2*2 days, about 70 participants- Preservation of Network of excellence- Technical and scientific presentations with in-depth discussion- Common preparation of future R&D SA projects (H2020, CoreSoar, …) Strong manifestation of interest Next meeting TA 2.1 and TA 2.2: to be planned end of 2019 or 202016 www.nugenia.org  Ended FP7 projects: SAFEST (Severe Accident Facilities for European Safety Targets),led by KIT (2014-2018): pan-European platform on coriumexperimental facilitiesFinal meeting December 2018 CEA-Cadarache (France).16 tests performed.Road Map for corium experimental research (TA 2.1 & and TA2.2) ALISA (Access to Large Infrastructures for SevereAccidents), led by KIT (2014-2018): Europa-China platformfor SA experiments.Final meeting March 2018 (Spain).13 tests performed (7 European & 6 Chinese)TA2.1 & TA2.2: Corium/debris coolability 25/03/2019917 www.nugenia.org  Ended in-kind NUGENIA projects: CORE-SOAR (Core degradation State-of-the Art Report), ledby IRSN (2016-2018): update of SOAR 1995. QUESA (QUEnch experiment with Steam and Air), led by EDF(2016-2018): complements of SAFEST by pre- and post-calculations of experiments done in the latter.TA2.1 & TA2.2: Corium/debris coolability 18 www.nugenia.org  Euratom current projects (FP7 or H2020): SAFEST-Gen 4 (Maintain the European network of excellence forexperimental laboratories-Expertise/Gen4): rejected EVEREST (Ex VEssel Retention European Simulation Tools): rejected SARICOB (Maintain the European-Chinese network of excellence forexperimental laboratories Expertise): rejected OECD future projects OECD/ROSAUTA2.1 & TA2.2: Corium/debris coolability 25/03/20191019 www.nugenia.org TA2.3: Containment behavior  FP7 projects: Link to ALISA project (Access to Large Infrastructures for Severe Accidents – Coordinated by KIT): Experiments on H2 combustion in Shanghai (2016) and H2 mixing in Chengdu (2018). NUGENIA projects: SAMHYCO-NET (Towards an improvement of SAfetyManagement procedures for severe accident latephase including HYdrogen and Carbon mOnoxidemitigation and explosion risk assessment models), led byIRSN (2017-2020)20 www.nugenia.org International workshop on Hydrogen Safetyfor Nuclear Power Plants9-11 April 2019 - Fontenay-aux-Roses, FranceHosted by Institut de Radioprotection et de Sûreté Nucléaire (IRSN)25/03/20191121 www.nugenia.org  H2020 projects: FASTNET (FAST Nuclear Emergency Tools), led by IRSN(2015-2019): fast-running tools for evaluation of sourceterm in emergency situations, MUSA (Management and Uncertainties in SevereAccidents), led by CIEMAT. (2019-2023). NUGENIA projects: IPRESCA (Integration of Pool scrubbing Research toEnhance Source-term CAlculations), led by Becker Techn.(2017-2020).TA2.4: Source Term22 www.nugenia.org TA 2.5: Impact of severe accident on environment an EMgmt Signature of a MoU between NUGENIA and Radiation Protection platforms (MELODI, EURADOS, NERIS, ALLIANCE = MENA) in October 201725/03/20191223 www.nugenia.org TA 2.5: Impact of severe accident on environment and EMgmt Preparation of a 1st transverse workshop on projectsof interest (end 2019) Preliminary list of transferse scientific issues  (IRSN andSCK-CEN): Liquid releases and the KD issue (uncertainties !) PSA level 2-3 and assessment of the radiological consequences of accidents, including inverse methods On- and out-site interface to NERIS; a possible workshop on uncertainties of the assessment and mgmt of a severe accident (TERROTORIES and CONFIDENCE ongoing projects under MENA). Instrumentation for severe accidents (OECD) - Environment24 www.nugenia.org TA 2.6: SA Scenarios  Activities recently carried out or ongoing SA Database within FASTNET (about 120 scenarios, so far)  ASCOM Nugenia Project Activities within OECD/NEA WGAMA.GENERIC DESIGNSATW LFWSG LB_LOCA IB_LOCA SB_LOCA SBO SGTR SFPBWR-MARK1 * *BWR-ABB * * *CANDU * * * *French PWR 1300 * * * * *French PWR 900 *PWR 1000 * * * * *VVER 440 * * *VVER 1000 * *25/03/20191325 www.nugenia.org TA 2.6: SA Scenarios  UASA (BEPU methods) major focus in future IAEA CRP on “Advancing the State-of-Practice in Uncertainty and Sensitivity Methodologies for Severe Accident Analysis in Water Cooled Reactors” EC MUSA Project26 www.nugenia.org Education and training (SAP) 8 editions of SAP Course (2005)(France, Hungary, Italy, Germany, UK, Sweden and Slovenia) Open to university students with discount fees and contributed for 3Credits (ECTS). Strong link with ENEN Association. Last one hosted by JSI in Oct. 2017 at Ljubljana:65 trainees from 22 countries (and 18 lecturers) SAP-course in China- October 2018 in collaboration with Chineseorganizations (link with the FP7 Euro-Chinese ALISA project)- Next SAP : planned in France CEA/ INSTN-Cadarache : 9-14September 2019 Scope: SA phenomenology, progression and mitigation in current Ligth Water-cooled Gen.II and III Nuclear Power Plants (NPP), but also differentdesign solutions in Gen.III NPPs. This edition will include HWRs. Special session on Fukushima-Daiichi NPP 2011 accidents.25/03/20191427 www.nugenia.org Perspectives15 years after its start, SARNET networkingcontinues efficiently in NUGENIA frame Technical workshops : essential “brick” for share of R&Dprogress and brain-storming for new R&D projects… Next events: 9th ERMSAR-2017 hosted by UJV in Prague (Czech Rep.) inMarch 2019 (https://www.ermsar2019.com/) Next education/training course to be held in Sept. 2019 SARP (SA Research Priorities): ERMSAR Conf. Update Main challenges to face: Keeping active the Community (workshops, new projects,publications), despite possible  of R&D funding Identify opportunities in new NPP types, such as SMR28 www.nugenia.org Perspectives on Coordination Coordination meetings (4/year). Next on April 30th. New sub-leaders of TA2.1 & TA2.4.Procedure to be discussed in next TA2 Coordination meeting. Strengthen links with OECD, CSNI/WGAMA & IAEA.- Severe accident courses (IAEA).- Similarly-targeted project (IAEA; MUSA vs CRP).- OECD projects (TCOFF; ROSAU; THAI …).- WGAMA activities (ST workshop; ST instrumentation; …) “Renew” TA2 portfolio & TA2 EC projectsinitiatives (NOIP, a useful tool)

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Research Activities in NUGENIA-TA2: Severe Accidents

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Research Activities in NUGENIA-TA2: Severe Accidents

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Archivio della Ricerca - Università di Pisa

Archivio della Ricerca - Università di Pisa