The NEA Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS) held its annual meeting and associated expert group meetings from 15 to 19 February 2021 with more than 90 experts from 22 countries.
The WPRS conducts studies on reactor physics of advanced nuclear systems, reactor fuel performance, reactor core thermal-hydraulics and mechanics, and system reactor multi-physics. The working party also examines the uncertainties associated with the modelling of these phenomena, particularly the modelling of reactor transient events.
During the meeting, member countries endorsed the creation of a new benchmark aimed at the neutronics and thermal-hydraulics of micro-reactors. In addition, the working party agreed to launch a task force to provide strategic recommendations on member country needs relating to zero power reactors.
Participating experts also reported on and discussed ongoing data evaluation and preservation activities under the WPRS, including the International Reactor Physics Experiment Evaluation (IRPhE) Project, the International Fuel Performance Experiments database (IFPE) and the Shielding Integral Benchmark Archive and Database (SINBAD).