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DEN/CAD/DTN

DEN/CAD/DTN. Necessary work for PACTITER Development and validation F. Dacquait*, V. Blet**, F. Nguyen* *DTN/SMTM/LMTR **DTN/STRI/LTCD. Status of the PACTITER Code Development. Status of the PACTITER Code Development (continued). Main references.

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DEN/CAD/DTN

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  1. DEN/CAD/DTN Necessary work for PACTITERDevelopment and validationF. Dacquait*, V. Blet**, F. Nguyen**DTN/SMTM/LMTR **DTN/STRI/LTCD

  2. Status of the PACTITER Code Development

  3. Status of the PACTITER Code Development (continued)

  4. Main references • F. Dacquait (2003), “Status of CORELE”, Meeting on the CORELE programme CEA-EFDA-ENEA, Cadarache, May 13, 2003 • F. Dacquait et al. (2003), “Qualification du système de rétention d’ions de la boucle CORELE”, CEA NT DEC/S3C/03-162, December 2003 • F. Dacquait (2004), “PACTITER V2 vs V2.1”, CEA Letter DTN/SMTM/LMTR 24, March 2004 • F. Dacquait et al. (2004), “Status of PACTITER”, CEA DTN/SMTM/04-117, December 2004 • F. Dacquait et al. (2005), “Preliminary requirements for the development and validation programme of the PACTITER code”, CEA DTN/SMTM/05-09, February 2005 • T. Duverneix et al. (1999), “Definition of the CORELE test matrix for ITER purpose”, CEA NT DEC/SH2C/LTC/98-176 V1, September 1999 • T. Duverneix, V. Biscay (2001), “Report on ITER 01 and ITER 02 tests in the CORELE 2 loop”, CEA NT DEC/S3C/01-099, December 2001 • M. Girard (2004), “Validation of EU Safety Computer codes : validation of PACTITER on the CIRENE experiment - Feasibility study”, CEA NT DTN/STRI/LTCD/04-021, December 2004 • J.C. Robin (1995), “Adaptation of PACTOLE for fusion application”, CEA NT DEC/SECA/LTC/95-255, December 1995 • P. Schindler (2004), “ITER 2004 tests report – Stainless steel release rate evaluation in ITER operating conditions”, CEA NT DTN/STRI/LTCD/04-020, December 2004 • D. Tarabelli (1998), “PACTITER (PACTOLE version for ITER) - Final report”, CEA NT DEC/SECA/LTC/98-150, June 1998 • D. You et al. (1997), “Thermodynamic stability and solubility of Vopper and Copper oxides”, CEA RT-SCECF 420, May 199714

  5. PACTITER V3.0 • PACTOLE V3.0 adaptation to ITER conditions in 2004 • Main changes compared with PACTITER V2.1 • Corrosion and release model (input data) • No solubility correction • Instationnary mass balance equation (simulation of pulsed operation) • Non-limited number of elements (Fe, Ni, Co, Cr, Mn, Zr, Cu…)and isotopes (restrictions : thermodynamic data/computer memory/run duration)

  6. PACTITER V3.0 – ITER TCWS DIV/LIM loop scheme L. Di Pace (2003), « Report on status of 2002 PACTITER validation of task », Review meeting on ITER TA81-01, Frascati, 30th Sept. 2003

  7. PACTITER V3.0 – input data

  8. PACTITER V3.0 - Simulation • Encouraging results • Raw calculation (without parameter optimization) • Results : same order of magnitude as V2.1

  9. PACTOLE V3.1  PACTITER V3.1 • Improvement of the chemistry module • New approach for oxide determination and equilibrium concentration calculation • Model based on a survey of oxides thermodynamic behavior • Implementation of the PHREEQC code and the « CEA thermodynamic database » ( Europe,to be confirmed) • Improvement of the corrosion/release mechanism • Based on empirical mathematical expression (parameters such as temperature, velocity, saturation…) • Treatment of oxidizing conditions  PACTITER V3.1 : reference version

  10. Development and validation requirements - Code • Implementation of Cu thermodynamic data in PHREEQC-CEA • Determination of a parametric expression for the corrosion and release rates (parameter such as temperature, velocity, saturation…) • Calculations to test the code – Preliminary validation

  11. Development and validation requirements - Experiments • Experiments must cover the range of the ITER conditions: • Chemical characteristics • Chemical conditioning (pH20°C=7.0, [H2]=25 cm3/kg, [Li]=0,2 ppm), • Corrosion product concentration (pure – saturated coolant) • Thermohydraulic characteristics • Fluid temperature (50°C  240°C) • Velocity (static water 12m/s) • Materials • Type of materials : stainless steel, copper alloy • Manufacturing process • Short and long-term experiments • Two types of experiments are requested: • Experiments to obtain input data in ITER conditions, • Semi-integral and integral experiments in ITER conditions to validate some particular physical models and the PACTITER code itself.

  12. PACTITER needs : data acquisition • Data acquisition for PACTITER V3 : • Complementary SS release rate at higher temperature (2005) • CuCrZr release rate (2006) • Literature survey • Semi integral CORELE tests

  13. PACTITER needs : validation • Validation of the deposition model of PACTITER V3 • Semi integral test loop representative of ITER PHTS • CIRENE feasibility study (2004) • Complementary feasibility study to assess the interest of CORELE and the Cu measurement methodology (2005)

  14. PACTITER needs : validation (continued) • Validation of the whole ACP transfer including release and deposition during an ITER scenario. • Towards an integral loop : • Adaptation of existing means ? • Creation of a new loop ? • Complementary feasibility study

  15. PACTITER needs (continued) • Planification of experiments required for compatibility with : • ITER licensing needs • PACTITER evolution • Financial considerations • Technological modifications of the loops

  16. PACTITER needs: proposal of planification

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