The NEA Working Group on Analysis and Management of Accidents (WGAMA) co‑organised and participated in the Specialists Workshop on Advanced Instrumentation and Measurement Techniques for Experiments Related to Nuclear Reactor Thermal Hydraulics and Severe Accidents (SWINTH‑2019), held on 22‑25 October 2019 in Livorno, Italy. Hosted by the University of Pisa, the event attracted 63 participants from 13 countries, and featured five keynote lectures and 35 regular presentations.
The programme covered a wide range of techniques, including local (micro) probes, grid probes, tomographic techniques and flow imaging techniques. Participants discussed optimisation and refinement of established techniques, as well as new and innovative approaches.
A general trend in the field is an increase in spatial and temporal resolution, often allowing to compare experimental results to computational fluid dynamics calculations. This, in turn, will generate higher fidelity in the analysis of reactor safety systems and accident scenarios.