The aim of the Fission Product Release and Speciation project is to provide a database on the chemical identities and kinetics of release of fission products evolved from highly irradiated fuel under a variety of severe reactor accident conditions. This report describes progress in the 6 months commencing 1 February 1999. ENEA work has mainly been concerned with the study of the mechanistic model for the description of fission product releases from the intact fuel matrix, which is the bulk of the in-development IPSN code MFPR. This kind of model describes the behaviour of gas atoms and bubbles inside the fuel grain and fuel vacancies by means of a system of coupled differential equations, which take account of the fundamental processes occurring in the fuel matrix.
|Titolo:||Fission Product Release and Speciation: Progress Report 01/02/99 - 31/07/99|
|Data di pubblicazione:||1-lug-1999|
|Appare nelle tipologie:||5.3 Documento tecnico|