1 DTN / PACTITER - Kick off meeting of the contracts TW5-TSS-SEA5.6, Cadarache 26/10/05 Necessary work for PACTITER Development and validation F. Dacquait*,

1DTN / PACTITER - Kick off meeting of the contracts TW5-TSS-SEA5.6, Cadarache 26/10/05

Necessary work for PACTITERDevelopment and validation

F. Dacquait*, V. Blet**, F. Nguyen*

*DTN/SMTM/LMTR **DTN/STRI/LTCD

DEN/CAD/DTN


Status of the PACTITER Code Development

PACTOLE280 < T < 330°C - pH300°C=7.2Stainless Steel / Zry / Inconel

PACTITER40 < T < 240°C - pH20°C=7.0

Stainless Steel / CuCrZr

1995 : PACTOLE V2 release• Fortran 77

1995 : PACTOLE-ITER V2 releaseNet Team data for Cu (Robin et al., 1995)

1997 : Reassesment of modelling• Corrosion / release model• Chemistry module• Operating transient

1996-1997 : Experiments on Cu Thermodynamic data (You et al., 1995)

1998-2002 : PACTOLE V3.0 development - Easy evolving computer tool (C++)• Corrosion and release rate

(input data)• Instationnary mass balance

equation• Non-limited number of chemical

elements

1998 : PACTITER V2 releaseCEA data for Cu (Tarabelli, 1998)

1999-2001 : Experiments on SSTube release tests in CORELE (Duverneix et al., 2001)

2001 : PACTITER V2.1 releaseSolubility correction (for release rate) at T<200°C (Tarabelli, 2001)


PACTOLE PACTITER2003 : Validation (based on analytical experiments and measurements on PWR done over the years) and release of the PACTOLE V3.0 code

2003-2004 : Clarification PACTITER V2 vs V2.1Release model not justified in ITER conditions (Dacquait, 2001)

2004-2005 : PACTOLE V3.1 development and validation• Improvement of the chemistry module•Empirical expression for corrosion and release rates•Treatment of oxidizing conditions

12/05 : PACTOLE V3.1 release

2004 : PACTITER V3.0 development (Dacquait et al., 2004)SS tube release tests in CORELE (100-150°C) (Schindler, 2004) - CIRENE feasibility study (Girard, 2004)

2005 : Development program (Dacquait et al., 2005) - SS tube release test in CORELE (200°C) – Cu release feasibility study

Status of the PACTITER Code Development (continued)


• 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

Main references


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)


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


PACTITER V3.0 – input data


PACTITER V3.0 - Simulation

Encouraging results•Raw calculation (without parameter optimization)•Results : same order of magnitude as V2.1


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

PACTOLE V3.1 PACTITER V3.1


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

Development and validation requirements - Code


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.

Development and validation requirements - Experiments


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


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)

PACTITER needs : validation


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

PACTITER needs : validation (continued)


Planification of experiments required for compatibility with :

• ITER licensing needs

• PACTITER evolution

• Financial considerations

• Technological modifications of the loops

PACTITER needs (continued)


PACTITER needs: proposal of planification

DTN DTN DPC

SMTM STRI SECR

Derivation of PACTITER V3.1 from PACTITER V3.0 and PACTOLE V3.1 1,5 0,1 0,2 1,8

Der-1 : Implementation of Cu in PHREEQC-CEA and validation 0,2 0,2

Der-2 : Parametric expression for corrosion and release rates 0,1 0,1 0,2

Der-3 : Documents (user manual - physic models…), quality, project management, assistance to users (e.g. ENEA)

1,4 1,4

Data acquisition 0,3 1,9 1 3,2

Dat-1 : Complementary SS release rates 0,6 0,6

Dat-2 : Feasability study of Cu release rates 0,2 0,2

Dat-3 : Cu release rates 0,6 0,6

Dat-4 : Other parameters of the deposition model 0,3 0,5 1 1,8

Validation – Experiments (including loop modifications) 1,3 7 8,3

Exp-1 : Feasability study of Cu deposit measurement 0,1 0,5 0,6

Exp-2 : Feasibility study of deposit measurement in CORELE 0,1 0,5 0,6

Exp-3 : Deposition model validation in CORELE or CIRENE 0,3 2 2,3

Exp-4 : Feasability study of integral validation 0,3 1 1,3

Exp-5 : Integral validation of PACTITER 0,5 3 3,5

Validation - Calculation 1,6 0,2 1,8

Val-1 : Preliminary PACTITER validation 0,5 0,5

Val-2 : Deposition model validation 0,3 0,1 0,4

Val-3 : PACTITER V3.1 validation 0,8 0,1 0,9

DTN

SMTM

DTN

STRI

DPC

SECR

Total (pmy) 15,1

Tasks Total 2005 2006 2007 2008 2009 2010

Total per service (pmy)

4,85 0,15 0,15 1,5 0,75 1 1,3

9,05 0,8 0,6 2,65 2,5 2 0,5

1,2 0,2 0,25 0,75

3 1,80,95 0,95 4,4 4