Annals of Nuclear Energy 119 (2018) 23–35 Contents lists available at ScienceDirect Annals of Nuclear Energy journal homepage: www.elsevier.com/locate/anucene New developments in modeling sodium spray ﬁres with ASTEC-Na Luke S. Lebel , Nathalie Girault Institut de Radioprotection et de Sûreté Nucléaire, BP3 13115 St Paul lez-Durance, Cedex, France article i nfo abstract Article history: One of the most signiﬁcant containment-related safety issues during a severe accident at a sodium fast Received 14 December 2017 reactor is a spray ﬁre, as the high energy ejection and combustion of sodium can cause a sudden, large Received in revised form 12 April 2018 spike in containment pressure, and can possibly cause the containment building’s early failure. This paper Accepted 13 April 2018 discusses the incorporation sodium spray ﬁre models into ASTEC-Na, a simulation tool currently under Available online 30 April 2018 development by IRSN for sodium fast reactor severe accidents. An extensive comparison to past experi- mental results is included, and a new empirical model that describes the combustion phenomena for Keywords: large ﬂow sodium spray ﬁres is developed. This paper also extends ASTECNa to a hypothetical core dis- Sodium fast reactors ruptive accident, and discusses a ﬁre conﬁnement suppression technique. Sodium
Annals of Nuclear Energy – Elsevier
Published: Sep 1, 2018
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