Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

Personal portfolio

ANALYSIS OF THE DESIGN-BASIS ACCIDENT WITH BLOCKAGE OF LIQUID METAL FAST REACTOR INDIVIDUAL FUEL ASSEMBLY

Vlasichev G.N. 1
1 Nizhny Novgorod State Technical University im.R.E.Alekseeva
Analysis of the design-basis accident with blockage of Liquid Metal Fast Reactor individual assembly is executed. The melting times of pin cladding and fuel are received in view of evaporation of sodium, molten cladding relocation, freezing of its material on more cold pin sites and repeat frozen crust melting. The melting times of the wrapper tubes are received depending on various parameters. The depth of melting front for structures under the core of fuel melt heat-generating mass with a residual heat generation level is received for different factors of heat transfer to adjacent Fas. Analysis showed that design limit under this accident is executed. The emergency protection actuation by fuel failure detection system signal will limited the accident within one damaged FA – by design pins failure limit.