TOKE special report: Modelling of PACTEL with APROS5 simulation environment

PACTEL facility has been used quite extensively for validation of the thermal hydraulic part of APROS Multifunctional Simulation Environment. During the years, several models of PACTEL facility have been created with APROS. The driving forces for creation of new models have been improvements in APROS code models, development of graphical user interfaces of APROS environment and changes in the PACTEL facility. The specific features of the new model described in this paper are that the present PACTEL facility has been modelled in a more detailed manner than in the previous ones, and the model has been created using the new graphical user interface GRADES. The current paper describes the model created in a Master's Thesis work and preliminary validation calculations made with the model. The paper contains also a short overview on the various PACTEL models created with APROS and the validation calculations performed.