Inherent Shutdown Capabilities in Accelerator-driven Systems
2002 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 29, no 14, 1689-1706 p.Article in journal (Refereed) Published
The applicability for inherent shutdown mechanisms in accelerator-driven systems (ADS) has been investigated. We study the role of reactivity feedbacks. The benefits, in terms of dynamics performance, for enhancing the Doppler effect are examined. Given the performance characteristics of source-driven systems, it is necessary to manage the neutron source in order to achieve inherent shutdown. The shutdown system must be capable of halting the external source before excessive temperatures are obtained. We evaluate methods, based on the analysis of unprotected accidents, to accomplish such means. Pre-concepted designs for self-actuated shutdown of the external source suggested. We investigate time responses and evaluate methods to improve the performance of the safety system. It is shown that maximum beam output must be limited by fundamental means in order to protect against accident initiators that appear to be achievable in source driven systems. Utilizing an appropriate burnup control strategy plays a key role in that effort.
Place, publisher, year, edition, pages
2002. Vol. 29, no 14, 1689-1706 p.
Doppler effect, Natural convection, Neutron sources, Particle accelerators, Security systems, Thermal expansion, Accelerator driven systems (ADS)
IdentifiersURN: urn:nbn:se:kth:diva-4984DOI: 10.1016/S0306-4549(01)00129-3ISI: 000175981500005OAI: oai:DiVA.org:kth-4984DiVA: diva2:7340
QC 201010112005-03-072005-03-072010-10-11Bibliographically approved