An innovative way of thinking nuclear waste management – Neutron physics of a reactor directly operating on SNF

A solution for the nuclear waste problem is the key challenge for an extensive use of nuclear reactors as a major carbon free, sustainable, and applied highly reliable energy source. Partitioning and Transmutation (P&T) promises a solution for improved waste management. Current strategies rely on systems designed in the 60’s for the massive production of plutonium. We propose an innovative strategic development plan based on invention and innovation described with the concept of developments in s-curves identifying the current boundary conditions, and the evolvable objectives. This leads to the ultimate, universal vision for energy production characterized by minimal use of resources and production of waste, while being economically affordable and safe, secure and reliable in operation. This vision is transformed into a mission for a disruptive development of the future nuclear energy system operated by burning of existing spent nuclear fuel (SNF) without prior reprocessing. This highly innovative approach fulfils the sustainability goals and creates new options for P&T. A proof on the feasibility from neutronic point of view is given demonstrating sufficient breeding of fissile material from the inserted SNF. The system does neither require new resources nor produce additional waste, thus it provides a highly sustainable option for a future nuclear system fulfilling the requests of P&T as side effect. In addition, this nuclear system provides enhanced resistance against misuse of Pu and a significantly reduced fuel cycle. However, the new system requires a demand driven rethinking of the separation process to be efficient.

[1]  B. Merk,et al.  Transmutation of All German Transuranium under Nuclear Phase Out Conditions – Is This Feasible from Neutronic Point of View? , 2015, PloS one.

[2]  A. Mount,et al.  Demand driven salt clean-up in a molten salt fast reactor – Defining a priority list , 2018, PloS one.

[3]  J. R. Engel,et al.  Molten-Salt Reactors for Efficient Nuclear Fuel Utilization Without Plutonium Separation , 1978 .

[4]  Emil Fridman,et al.  Neutronic analysis of SFR core with HELIOS-2, Serpent, and DYN3D codes , 2013 .

[5]  H. Macpherson.  The Molten Salt Reactor Adventure , 1985 .

[6]  Bruno Merk,et al.  On a long term strategy for the success of nuclear power , 2017 .

[7]  Robert Hill,et al.  Progress in reliability of fast reactor operation and new trends to increased inherent safety , 2015 .

[8]  Ch. Poinssot,et al.  Assessment of the environmental footprint of nuclear energy systems. Comparison between closed and open fuel cycles , 2014 .

[9]  M. Nilsson,et al.  Introduction to the reprocessing and recycling of spent nuclear fuels , 2015 .

[10]  V. Ignatiev,et al.  Progress in development of MOSART concept with Th support , 2012 .

[11]  B. Merk,et al.  On the Burning of Plutonium Originating from Light Water Reactor Use in a Fast Molten Salt Reactor—A Neutron Physical Study , 2015 .

[12]  Aldo A. Ferri,et al.  HELIOS: Angularly Dependent Collision Probabilities , 1992 .

[13]  U. Rohde,et al.  On the Use of a Molten Salt Fast Reactor to Apply an Idealized Transmutation Scenario for the Nuclear Phase Out , 2014, PLoS ONE.

[14]  B. Merk,et al.  Neutron shielding studies on an advanced molten salt fast reactor design , 2014 .