The present report has been carried out within the Euratom collaborative project: 'Central Design Team for a Fast-spectrum Transmutation Experimental Facility (CDT/FASTEF)', inserted in the 7th European Framework Program. Beyond the participation of ENEA as a partner of the project, this work represents the Master Degree Thesis of the author participating to a postgraduate education in nuclear engineering at the university of Bologna (UniBO): 'Master Universitario di II livello in Progettazione e Gestione Sistemi Nucleari Avanzati' (AA 2008/09). The CDT/FASTEF project aims to demonstrate an efficient transmutation of high level wastes and associated technology through a system working in subcritical and/or critical mode: an experimental facility cooled by Lead-Bismuth Eutectic (LBE) is proposed to be designed to an advanced level at the horizon of 2012. In the initial phase of the project, the Work Package n. 1 (WP1) has to provide the 'Definition of specifications and detailed work programme of FASTEF'. In WP1, ENEA has the responsibility of task 1.2, that deals with the 'Analysis of FASTEF to operate in a critical mode'. For this purpose, starting from the XT-ADS (eXperimenTal-ADS) sub-critical core summarily designed during the EUROTRANS Integrated Project (6th EU FP), the present work identifies the main design modifications due to the introduction of the critical operation mode. Beyond neutronic calculations, mainly concerning the introduction of a primary and secondary shutdown systems, a preliminary thermal-hydraulic analysis has been performed in order to assess the flow rate of LBE coolant (and the consequent pressure drop through the core) necessary to respect the technological constraints on fuel and cladding temperatures.
|Titolo:||Preliminary neutronic and thermal-hydraulic analyses of a fast (LBE cooled) experimental reactor / irradiation facility|
|Data di pubblicazione:||20-gen-2010|
|Appare nelle tipologie:||5.2 Documento in Garanzia della Qualità|