Author(s)

V. Peyres, L.E. Herranz

Abstract

Fission products and aerosols released from the fuel in the case of a hypothetical accident in nuclear reactors go through water volumes in some risk-dominant sequences. Hydrodynamic behaviour of gases in pools is, hence, of an outstanding importance and their modelling has been approximated differently in available tools for pool scrubbing simulation. In this paper the fundamentals of the hydrodynamic approaches of SPARC and BUSC A codes are reviewed and discussed in terms of nuclear safety relevance. Present weaknesses, misleading similarities and major lacks are highlighted. Furthermore, areas where further research is required are pointed out; in this regard, the hydrodynamic behaviour of gas jets penetrating water pools is considered of utmost importance. 1 Introd

Keywords