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A. Toivonen Espoo 3.4.2009

HPLWR phase 2 / GETMAT: FP6 / 7 projektien yleisesittely. A. Toivonen Espoo 3.4.2009. HPLWR Phase 2 - Overview -. Objective.

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A. Toivonen Espoo 3.4.2009

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  1. HPLWR phase 2 / GETMAT: FP6 / 7 projektien yleisesittely A. Toivonen Espoo 3.4.2009

  2. HPLWR Phase 2 - Overview - Objective “The overall objective of the HPLWR Phase 2 project is to assess the critical scientific issues and the technical feasibility of the High Performance Light Water Reactor (HPLWR) system with a view to determine its future potential.”

  3. HPLWR Phase 2 - Overview - • High Performance Light Water Reactor Phase 2(HPLWR Phase 2) • Start: September 1, 2006 • End: February 2010 • Duration: 42 Months (3.5 years) • 10 Partners from 8 European Countries (+3 active supporters) • Budget: 4.652.400 € Part of the Generation IV International Forum research activities on Supercritical Water-Cooled Reactors (SCWR) carried out in Japan, Canada, South Korea, and Europe. There are also activities in China and Russia in this field.

  4. 31 46 91 102 75 HPLWR Phase 2 - Overview - Labor Distribution on WPs [PM] 4 11 WP1 "Design & Integration WP2 "Core Design” WP3 "Safety" S 360 PM WP4 “Materials” WP5 "Heat Transfer” WP6 “Education & Dissemination” WP7 “Management”

  5. HPLWR Phase 2 - Overview - WP1: Design & Integration (D. Bitterman, AREVA)VTT contribution 3 person months:To compare the estimated HPLWR electricity producing costs to competing alternatives in Finland, e.g. EPR (Göran Koreneff) WP3: Safety (M. Andreani, PSI)VTT contributions 9 person months: Development of HPLWR model for the current three-pass design, as well as the needed transient neutronics group constants (cross sections)Analysis of selected RIA cases, e.g. control rod ejection (Antti Daavittila, Malla Seppälä, Joona Kurki) WP4: Materials (A. Toivonen, VTT)VTT contributions 44 person months:To select optimal materials for in-core and out-of-core applications in HPLWR Produce general corrosion, SCC and creep data and model for database (Sami Penttilä, Aki Toivonen)

  6. HPLWR Phase 2 - Overview -

  7. HPLWR: Design parameters Cladding temperature ~620oCNet efficiency 44%Enthalpy rise of 1936 kJ/kg(EPR: 190 kJ/kg) 14.3 m 4.5 m

  8. GETMAT -Overview- Generation IV and Transmutation Materials • Start of the GETMAT project February 1st 2008 • Duration of the GETMAT project 60 months • Budget 14 M€ total budget and 7.5 M€ EC contribution

  9. GETMAT -Overview- • The requirements defined for innovative nuclear systems are • Sustainability and waste minimisation • Enhanced economics, safety and reliability • Enhanced proliferation resistance • With respect to the current nuclear industry experience, demanding material-related operational conditions can be envisaged e.g.: • High in-service and off-normal temperatures • High burn-ups • Long service life-time (~ 60 years) • Compatibility with new coolants These conditions imply new challenges on structural materials.

  10. GETMAT -Overview- WP1 Metallurgical and Mechanical Behaviour WP2 Material Compatibility with Coolant(VTT contribution 200 k€) WP3 Irradiation behaviour of structural materials WP4 Multiscale Modelling and model experimentsProgram concentrates on F/M steels, ODS steels, welding of ODSs, and coating methods

  11. GETMAT -Overview- VTT contribution: Conclusions from HPLWR Phase 2 materials studies Fuel cladding: wall thickness ~0.5 mm, Tpeak 620-630oC: -F/M steels: high oxide growth rate, ~1.5 mm/year -9%Cr ODS: still rather high oxide growth rate, 0.2-0.3 mm/year -Austenitic SSs and Ni base: rather high oxide growth rate or contains too much Ni -PM2000 corrosion rate slow, but suffers from 475oC embrittlement PM2000 selected at this stage Other core components (500oC peak temperature): -F/M steels: too high oxide growth rate at least for thin walled components austenitic SSs selected at this stage

  12. GETMAT -Overview- VTT contribution: Conclusions from HPLWR Phase 2 materials studies Improved general corrosion resistance for F/M and ODS steels needed: -Increased Cr for ODS seels (>9% Cr)? -surface treatments (Cr cladding of F/M steels)?

  13. GETMAT -Overview- VTT contribution General corrosion tests -Tests in supercritical water in oxidising and reducing environments (125 ppb O2/30 cc/kg H2) -500 and/or 600oC for 1000 and 2000h -weight gain measurements-cross sectional SEM and EDS studies Status: waiting for the test materials

  14. GETMAT -Overview- VTT contribution SCC tests -Environmental parameters as in general corrosion tests -SSRT tests: equipment ready (tested within HPLWR Phase 2)-d/dt 3e-7 1/s (previously proposed 1e-6 1/s or 1e-7 1/s. More reference data, however, available for 3e-7 1/s) -post test fracture surface examination by SEM Status: can be started in fall 2009, if test materials are available

  15. Thanks for attention

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