1. Copyright © 2012 SCKCEN Didier De Bruyn (SCKCEN), with contributions from Rafaël Fernandez (SCKCEN), Luigi Mansani (Ansaldo), Antony Woaye-Hune (AREVA), Massimo Sarotto (ENEA) & Evaldas Bubelis (KIT) for the primary systems and Jeroen Engelen (SCKCEN), Alberto Ortega & Manuel Perezagua Aguado (Empresarios Agrupados) for the building design 3 rd LEADER International workshop Pisa & Bologna, 4-7 September 2012 1 MYRRHA configuration & design

2. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 2

3. Copyright © 2012 SCKCEN Reactor Subcritical / critical mode 65 to 100 MW th Accelerator (600 MeV - 4 mA proton) Fast Neutron Source Spallation Source Lead-Bismuth coolant Multipurpose Flexible Irradiation Facility MYRRHA is an Accelerator Driven System 3 Innovative & Unique

4. Copyright © 2012 SCKCEN Continuity: SCKCEN has a long tradition of «first of a kind» 4 Inventor of innovative nuclear fuel (MOX fuel) 1st pressurized water reactor (PWR) outside of US (BR3) World first underground laboratory for R&D on HL waste disposal (HADES) World premiere project for transmutation of nuclear waste Highest performing material testing reactor in Europe (BR2) World first lead based ADS (GUINEVERE)

5. Copyright © 2012 SCKCEN ALLEGRO Experimental reactor (GFR) ASTRID Prototype (SFR) 200820122020 SFR Supporting infrastructures, research facilities MYRRHA ETPP European demonstration reactor (LFR) Reference technology Alternative technology LFR GFR The place of MYRRHA in ESNII European Sustainable Nuclear Industrial Initiative MYRRHA Fast spectrum irradiation facility 5

6. Copyright © 2012 SCKCEN MYRRHA is an international project 6

7. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 7

8. Copyright © 2012 SCKCEN The CDT project aimed at going further: Starting from the outcome of different FP projects (PDS-XADS, EUROTRANS) and national initiatives (MYRRHA), Obtain a more advanced design of a flexible irradiation facility, FASTEF, able to work in both sub-critical and critical mode, Setting also up a centralised multi-disciplinary team, based at Mol for its core group, Concentrating on primary and core systems and on reactor building design & plant layout, The project started in April 2009 for a duration of 36 months. 8

9. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 9

10. Copyright © 2012 SCKCEN FASTEF is a performing, rubust facility Maximum core power amounts 100 MWth; High fast flux intensity obtained by maximizing power density; Many positions available in the core to host experiments; All components in reactor vessel designed to be removable; Diaphragm separates hot and cold coolant; Safety analyses demonstrate robustness against transients. 10

11. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 11

12. Copyright © 2012 SCKCEN Reactor Vessel Reactor Cover Core Support Structure Core Barrel Core Support Plate Jacket Core Reflector Assemblies Dummy Assemblies Fuel Assemblies Spallation Target Assembly and Beam Line Above Core Structure Core Plug Multifunctional Channels Core Restraint System Control Rods, Safety Rods, Mo-99 production units Primary Heat Exchangers Primary Pumps Si-doping Facility Diaphragm IVFS IVFHS IVFHM Reactor layout 12

13. Copyright © 2012 SCKCEN Reactor Vessel 13 Main dimensions Height: about 12.200 m Inner diameter: 8 m Wall thickness: 80 mm Material AISI 316L Weight About 320 ton

14. Copyright © 2012 SCKCEN Reactor Cover 14 Main dimensions Height: 2 m Outer diameter: 9.3 m Material AISI 316L Concrete Weight About 340 ton

15. Copyright © 2012 SCKCEN Reactor Cover 15

16. Copyright © 2012 SCKCEN Diaphragm 16 Main dimensions Double plate design Baffle In-vessel fuel storage Height: about 9.8 m Inner diameter: 7.7 m Wall thickness: 50 mm Lower plate thickness: 80 mm Upper plate thickness: 50 mm Material AISI 316L Weight About 190 ton

17. Copyright © 2012 SCKCEN Core and Fuel Assemblies 17 151 positions & 37 multifunctional plugs

18. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 18

19. Copyright © 2012 SCKCEN Building design & plant layout have been optimized: The plant comprises a front-end accelerator building, a LINAC tunnel, a RF gallery, a reactor building (total length about 450 m) and several auxiliaries; room should be kept for future extensions; Within the reactor building, several workflows have been considered (entry of experiments, fuel & components; evacuation of experiments & commercial productions, spent fuel & waste); Short-term activities (production of medical radioisotopes & silicon ingots) should not interfere with long-term operations (irradiations); So the whole facility should be versatile and flexible, therefore complex. 19

20. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 20

21. Copyright © 2012 SCKCEN Today’s concept of plant layout REACTOR BUILDING FRONT-END ACCELERATOR LINAC + RF GALLERY 21

22. Copyright © 2012 SCKCEN General layout REACTOR BUILDING LINAC VITO SCK-CEN I S O L RF 22

23. Copyright © 2012 SCKCEN Vertical section in the Reactor building SECTION BB 23

24. Copyright © 2012 SCKCEN Horizontal section in the Reactor building LEVEL 00 24

25. Copyright © 2012 SCKCEN Horizontal section in the Reactor building LEVEL 91 25

26. Copyright © 2012 SCKCEN Vertical section in the Reactor building SECTION AA 26

27. Copyright © 2012 SCKCEN Contents Purpose of the MYRRHA project at SCKCEN Place of FP7 CDT project in this frame Conclusions related to primary system Illustrations of primary system design today Conclusions related to building design & plant layout Illustrations of building design today Way ahead to construction 27

28. Copyright © 2012 SCKCEN The project schedule 2010 – 2014: Front End Engineering Design; file for the Belgian Government 2015: Tendering & Procurement 2016 – 2018: Civil Engineering & construction of components 2019: On site assembly 2020 – 2022: Commissioning at progressive power 2023: Progressive start-up 2024 – 20??: Full exploitation 28

29. Copyright © 2012 SCKCEN Copyright © 2012 - SCK  CEN PLEASE NOTE! This presentation contains preliminary data for dedicated use ONLY and may not be cited without the explicit permission of the author. If this has been obtained, please reference it as a “personal communication. Copyright SCKCEN”. SCKCEN Studiecentrum voor Kernenergie Centre d'Etude de l'Energie Nucléaire Belgian Nuclear Research Centre Stichting van Openbaar Nut Fondation d'Utilité Publique Foundation of Public Utility Registered Office: Avenue Herrmann-Debrouxlaan 40 – BE-1160 BRUSSELS Operational Office: Boeretang 200 – BE-2400 MOL