Topics

Experimental studies and instrumentation for water-cooled nuclear reactor accident phenomena: defense-in-depth level one through four;
Specific instrumentation for reactor circuit and containment used for normal operation, accidental sequences and SA management;
Experimental studies with instrumentation for advanced and innovative reactors (SMR, GEN-IV) including those beyond water-cooled reactor designs;
Scale and complexity of experiments and phenomena: from basic through separate and integral effect tests to investigate any phenomena of postulated accidents;
Purpose of the experiments: understanding of phenomena and processes for an accident and its analysis; support to model development, code validation, safety assessment and safety demonstration;
Innovations in the measurement of local and/or space-averaged instantaneous and/or time averaged quantities of single-phase and/or multi-phase/multi-component flows with sufficiently fine resolution and uncertainty quantification;
Use of simulant fluids with well-established scaling laws;
Applicability of experiments and instrumentation to validation and development of different types of computer code (i.e., system TH, sub-channel analysis, CFD, containment TH, and SA);
Gaps between current model/code validation needs and existing technology; definition of requirements for new experiments and instrumentation in terms of “quality” of data;
Measurement uncertainty evaluation depending on type of instruments and measurement method with possible influences of TH and/or SA phenomena to simulate;
Use of machine learning (ML) and artificial intelligence (AI) methods for data analyses;
Issues related to the utilization, handling and preservation of experimental data; specifically concerning instruments for SA-related experiments: major challenges and solutions, improvements and advancements, being proposed, under development and/or already in use, including those in the light of lessons-learned from Fukushima-Daiichi accident and it’s recovery/decommissioning.