IEA TCP Task 43 - Subtask Safety Distances: State of the Art

The large deployment of hydrogen technologies for new applications such as heat, power, mobility and other emerging industrial utilizations is essential to meet targets for CO2 reduction. This will lead to an increase in the number of hydrogen installations nearby local populations that will handle hydrogen technologies. Local regulations differ and provide different safety and/or separation distances in different geographies. The purpose of this work is to give an insight on different methodologies and recommendations developed for hydrogen (mainly) risk management and consequences assessment of accidental scenarios. The first objective is to review available methodologies and to identify the divergent points on the methodology. For this purpose, a survey has been launched to obtain the needed inputs from the subtask participants. The current work presents the outcomes of this survey, highlighting the gaps and suggesting the prioritization of the actions to take to bridge these gaps.