A 1.3.1 State of the art for sensors in the hydrogen industry

The supply chain for hydrogen comprises the processes necessary to produce, distribute, and dispense the hydrogen. The competitiveness of these processes depends directly on their safety and the safety of the facilities where they are used. Hydrogen sensors are a crucial enabling technology for the safe use of hydrogen, but they also can be used to assess gas compositions (in mixtures hydrogen/natural gas or for impurities in hydrogen). Assessing the performances of a sensor requires both adequate protocols and testing facilities. In this report, we review existing protocols, test rigs or facilities, applications for the hydrogen supply chain and operation conditions.