tailieunhanh - PWR circuit contamination assessment tool. Use of OSCAR code for engineering studies at EDF

In this paper, as well as its use in the engineering studies at EDF. To begin with, the code structure is described, including the physical, chemical and transport phenomena considered for the simulation of the mechanisms regarding PWR contamination. | PWR circuit contamination assessment tool. Use of OSCAR code for engineering studies at EDF EPJ Nuclear Sci. Technol. 2 15 2016 Nuclear Sciences M. Benfarah et al. published by EDP Sciences 2016 amp Technologies DOI epjn e2016-50038-4 Available online at http REGULAR ARTICLE PWR circuit contamination assessment tool. Use of OSCAR code for engineering studies at EDF Moez Benfarah1 Meddy Zouiter1 Thomas Jobert1 Frédéric Dacquait2 Marie Bultot2 and Jean-Baptiste Genin2 1 EDF SEPTEN 12-14 avenue Dutrievoz 69628 Villeurbanne France 2 CEA Cadarache 13108 Saint-Paul-Lez-Durance France Received 21 May 2015 Received in final form 5 January 2016 Accepted 19 January 2016 Published online 1 April 2016 Abstract. Normal operation of PWR generates corrosion and wear products in the primary circuit which are activated in the core and constitute the major source of the radiation field. In addition cases of fuel failure and alpha emitter dissemination in the coolant system could represent a significant radiological risk. Radiation field and alpha risks are the main constraints to carry out maintenance and to handle effluents. To minimize these risks and constraints it is essential to understand the behavior of corrosion products and actinides and to carry out the appropriate measurements in PWR circuits and loop experiments. As a matter of fact it is more than necessary to develop and use a reactor contamination assessment code in order to take into account the chemical and physical mechanisms in different situations in operating reactors or at design stage. OSCAR code has actually been developed and used for this aim. It is presented in this paper as well as its use in the engineering studies at EDF. To begin with the code structure is described including the physical chemical and transport phenomena considered for the simulation of the mechanisms regarding PWR contamination. Then the use of OSCAR is illustrated with two examples from our engineering studies. The