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On the feasibility of Breed-and-Burn fuel cycles in Molten Salt Reactors

Jun 27, 2017, 5:30 PM
1h 30m
Poster Area (Yekaterinburg)

Poster Area

Yekaterinburg

POSTER Track 1. Innovative Fast Reactor Designs Poster Session 1

Speaker

Mr Boris Hombourger (Paul Scherrer Institut (PSI), Switzerland; École Polytechnique Fédérale de Lausanne (EPFL), Switzerland)

Description

Reactors able to operate in a Breed-and-Burn fuel cycle can operate at equilibrium with minimum fissile input and fuel processing without actinides separation, making them particularly attractive. Historically, the concept has essentially been considered for solid-fuel fast reactors, in particular to sodium-cooled fast reactors. Their performance in breed-and-burn is however limited by the neutron fluences necessary to reach break-even neutron generation in the fertile feed and their inhomogeneous burn-up. However, molten salt reactors do not suffer from such limitations, but have other constraints due to their homogeneous nature. In this paper, the constraints in term of fuel selection and utilization and reactor dimensions are studied and reported.

Country/Int. Organization

Paul Scherrer Institut (PSI), Switzerland
École Polytechnique Fédérale de Lausanne (EPFL), Switzerland

Primary author

Mr Boris Hombourger (Paul Scherrer Institut (PSI), Switzerland; École Polytechnique Fédérale de Lausanne (EPFL), Switzerland)

Co-authors

Prof. Andreas Pautz (Paul Scherrer Institut (PSI), Switzerland; École Polytechnique Fédérale de Lausanne (EPFL), Switzerland) Dr Jiri Krepel (Paul Scherrer Institut) Dr Konstantin Mikityuk (Paul Scherrer Institut (PSI), Switzerland)

Presentation materials