Sile Brennan is Reader in Hydrogen Safety at Ulster University where she is part of the Hydrogen Safety Engineering a Research Centre (HySAFER). She has been involved in a number of large European research contracts and is currently coordinating the FCH JU HyResponder project (https://hyresponder.eu/) a European train the trainer programme for responders in Hydrogen Safety. Her research interests are in CFD modelling of hydrogen releases and fires. She has previously participated in the European project HyIndoor involving pre-normative research on the indoor use of hydrogen and fuel cell systems, and the European H2FC infrastructure project where she coordinated the European technical school on hydrogen and fuel cells.