Unprotected Loss of Heat Sink Analysis for the Design of ELECTRA
(English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100Article in journal (Other academic) Submitted
In this paper, the transient behavior of a small fast reactor cooled by natural convection of lead (ELECTRA) is studied under unprotected loss of heat sink conditions, as a parametric function of the radiative heat loss via its outer vessel surface. The results show that when this heat loss is higher than the decay heat level, the negative reactivity feedback mechanisms of the system lead to re-criticality, bringing it into a new steady state. As a consequence, coolant freezing may be avoided during such accidents.
lead cooled fast reactor, natural circulation, unprotected loss of heat sink transient
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-146991OAI: oai:DiVA.org:kth-146991DiVA: diva2:727861
QS 20142014-06-232014-06-192014-06-25Bibliographically approved