AS ISO 19880.8:2021 pdf free.Gaseous hydrogen一Fuelling stations Part 8: Fuel quality control. This document specifies the protocol for ensuring the quality of the gaseous hydrogen at hydrogen distribution facilities and hydrogen fuelling stations for proton exchange membrane (PEM) fuel cells for road vehicles. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 19880-1, Gaseous hydrogen一Fuelling stations一Part 1: General requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 5 Hydrogen specifications The quality requirements of hydrogen fuel dispensed to PEM fuel cells for road vehicles are listed in ISO 14687-2. 6 Quality control approaches 6.1 General There are two common methods to control the quality of hydrogen at a fuelling station, by spot sampling and continuous monitoring. These methods can be used individually or together to ensure hydrogen quality levels. 6.2 Sampling Spot sampling at a fuelling station involves capturing a measured amount for chemical analysis. Sampling is used to perform…

BS ISO 19882:2018 pdf free.Gaseous hydrogen—Thermally activated pressure relief devices for compressed hydrogen vehicle fuel containers. Materials normally in contact with hydrogen shall be determined to be acceptable in hydrogen service, with the consideration of hydrogen embrittlement and hydrogen accelerated fatigue. The performance tests cannot guarantee that all cases and conditions of the hydrogen service are validated, so it is still incumbent on the designer/builder to carefully screen materials of construction for their intended use. The materials and design shall be such that there is no significant change in the functioning of the device, deformation or mechanical change in the device, and no harmful corrosion, deformation or deterioration of the materials when subject to the service conditions given in Clause 4. NOTE 1 Material performance data and/or acceptance criteria in hydrogen environments can be found in the ISO 11114 series, the Sandia National Laboratory Technical Reference for Hydrogen Compatibility of Materials, ANSI/AIAA G-095, ANSI/CSA CHMC 1, ASME B3L12, SAE J2579:2013, Appendix B or in equivalent national requirements. NOTE 2 Some fusible alloys can contain heavy metals that can be considered environmentally unacceptable by some customers and which can be prohibited by some jurisdictions. Non-metallic materials normally in contact with hydrogen…