Development and Assessment of ASTEC-Na Fuel Pin Thermo-Mechanical Models Performed in the European JASMIN Project

ASTEC-Na is a computer code system which evaluates protected and unprotected accidents in Sodium-cooled Fast Reactors throughout the Initiation Phase. The fuel pin behavior models implemented in ASTEC-Na sum up the essential aspects of the thermal and mechanical behavior of SFR fuel pins undergoing an accidental transient. A specific cladding mechanical model and an in-pin fuel relocation model have been developed all through the project where the later has been already implemented in the code and is already available. ASTEC-Na fuel pin behavior models are described in this paper and their transient predictions for four CABRI transient tests are compared to available experimental data as well as to SAS-SFR and SIMMER-III code calculations. Conclusions on the overall performance of ASTEC-Na fuel pin models are also presented.

PEREZ-MARTIN S.;  PFRANG W.;  GIRAULT N.;  CLOAREC L.;  LABORDE L.;  BUCK M.;  MATUZAS Vaidas;  FLORES Y FLORES Alain;  RAISON Philippe;  SMITH Anna;  MOZZANI N.;  FERIA F.;  HERRANZ L.;  FARGUES B.; 

2018-06-13

PERGAMON-ELSEVIER SCIENCE LTD

JRC106258

0306-4549,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC106258,   

10.1016/j.anucene.2017.12.061,