This paper presents an algorithm for numerical simulations of nonsteady states of the TRIGA MARK II reactor in Vienna, Austria. The primary focus of this work has been the development of an algorithm which provides time series of integral neutron flux after reactivity changes introduced by perturbations without the usage of thermal-hydraulic / neutronic numerical code systems for the TRIGA reac...

The Japan Atomic Energy Research Institute (JAERI) has proposed the concept of the transmutation of minor actinides (MA: Np, Am and Cm) with accelerator-driven systems (ADS), where MA nitride is adopted as a fuel material of a sub-critical core, because nitride fuel has the advantage of accommodating various MAs with a wide range of composition besides superior thermal and neutronic properties....

Abstract The alkali metal heat pipes are the critical transfer elements in pipe cooled reactors. However, there instabilities such as geyser boiling, resulting temperature oscillation and even threatening reactor safety. This work developed a coupled neutronic thermal-mechanical analysis method to analyze effects of boiling oscillations on parameters, e.g., stress, during operation. megawatt Me...

The management of transuranic nuclides in liquid metal reactors (LIvlR’s) is umsidered based on the use of the Integral Fast Reactor (WI?) conceptUnique features of the IFR fiel cycle with respect to transuranic management are identified. lhese features are exploited together with the hard spectrum of LMR’s to demonstrate the neutronic feasibility of a wide range of transuranic management optio...

To demonstrate that nuclear reactors can be built faster and more economically than they have been in the past, US Department of Energy Office Nuclear is sponsoring development a small reactor called Transformational Challenge Reactor (TCR) [1–2]. An important part design licencing process new validation software used to analyze using established physics benchmarks. This paper discusses neutron...