Under the guidance of the Working Party on Scientific Issues of Reactor Systems (WPRS), the Physics of Reactor Systems (EGPRS) will perform specific tasks associated with reactor physics aspects of present and future nuclear power systems. Reactor types considered include, but are not limited to the following:
The objective of the EGPRS is to provide expert advice to the WPRS and the nuclear community on the development needs (data and methods, validation experiments, scenario studies) for different reactor systems.
The fulfilment of this objective notably entails providing specific technical information on:
This technical information will generally be derived from a combination of direct experimental evidence and/or the results of theoretical benchmark analyses using accurate, validated modelling methods. In either case the availability of suitable experimental data is a fundamental requirement. A key objective of the EGPRS will therefore be to help identify, evaluate and preserve this type of experimental data. In this context, the EGPRS will monitor, steer and support the continued development of the International Reactor Physics Experiments Evaluation database (IRPhE).
Where required, the EGPRS will provide safety scenario studies for advanced systems and fuels. In this context, it will liaise closely with the Working Party on Scientific Issues of the Fuel Cycle (WPFC).
The goal of the Benchmark for Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of Light Water Reactors (LWR-UAM) was to determine the uncertainty in light water reactor (LWR) systems and processes in all stages of calculations. It was estimated through a simulation process of nine exercises in three phases provided by the benchmarking framework.