Report A3.3.2: Definition of the parameters, the equipment needed, and the requirements for safety and venting needed for the development of a real-size metrological validation facility for HD-HRS --AND-- Report A3.3.3: Identification of barriers which need to be addressed for the construction of the validation facility

MetHyTrucks aims to propose a recommendation for the development of a real-size metrological validation facility for sampling devices at HD-HRS. This document aims to collect the parameters to be tested, the equipment needed, and the requirements for safety and venting needed for such a facility. This document also addresses technical aspects regarding the accurate contamination of hydrogen in such facilities, how to monitor the contaminated hydrogen and how to remove the contamination from the facility (cleaning process). However, it is also clear that such a platform will be very expensive to build and maintain, and this effort should be weighed against the outcomes that this will bring. Preferably, the overall system should be simplified as much as possible without compromising the testing.