The Experimental Breeder Reactor-II (EBR-II) was a 62.5 MWt±20 MWe sodium cooled fast reactor that was operated successfully for 30 years. Over its period of operation a wealth of fuels and materials information originated from EBR-II. Several missions were conducted in EBR-II, all of which yielded new and valuable additions to the world's knowledge base for nuclear materials. Some of the ®rst ...

The monitoring of detailed 3-Dimensional (3D) core power distribution is a prerequisite for the operation of nuclear power reactors to ensure that various safety limits imposed on the fuel pellets and fuel clad barriers, such as the Local Power Density (LPD) and the Departure from the Nucleate Boiling Ratio (DNBR), are not violated during the reactor’s operation. The LPD and DNBR need to be cal...

Advances in modeling and simulation (M&S) are needed for the development and design of future generation reactor plants, particularly for providing the desired a priori assurance that performance, safety and economic goals are met. This paper summarizes the M&S needs for two types of reactor systems, the Sodium Cooled Fast Reactor (SFR), which enables multi-recycle of actinides to avoid nuclear...

Pär Olsson, Janne Wallenius,Christophe Domain, Kai Nordlund and Lorenzo Malerba Department of Neutron Research, Uppsala University, Uppsala, Sweden Department of Nuclear and Reactor Physics, Royal Institute of Technology, Stockholm, Sweden Department of Materials and Mechanics of Components, EDF R&D, Moret sur Loing, France Accelerator laboratory, University of Helsinki, Helsinki, Finland React...

have sprung to life in these recent years at the welcome sight of a possible nuclear power renaissance, IRIS (International Reactor Innovative and Secure) is the one that has moved most rapidly from an idea to a viable, albeit still at the preliminary design stage, commercial entry. IRIS is a modular pressurized water reactor with an integral configuration (all primary system components—pumps, ...

Three nuclear power plant accidents have deeply affected the public and the nuclear industry worldwide: Three-Mile Island in Pennsylvania in 1979, Chernobyl in the Ukraine in 1986, and Fukushima Dai-ichi in Japan in 2011. The perception of the risk by the public at the time of each accident, was shaped by its direct consequences, fears of delayed effects of nuclear radiations, the media coverag...

Hydrostatic equilibrium and energy conservation determine the conditions in the gravitationally stabilized solar fusion reactor. We assume a matter density distribution varying non-linearly through the central region of the Sun. The analytic solutions of the differential equations of mass conservation, hydrostatic equilibrium, and energy conservation, together with the equation of state of the ...