Core Viewpoint - The successful full-scale venting test of a 10 MPa high-pressure hydrogen pipeline marks a significant advancement in China's hydrogen pipeline safety technology, filling a technical gap in the industry [1] Group 1: Test Significance - The venting test serves as a "safety simulation" for hydrogen pipelines, ensuring the safe and stable long-distance transportation of hydrogen, which is crucial for the widespread application of hydrogen energy [1] - The test addresses the core issue of safely venting hydrogen gas during planned maintenance or emergencies, preventing potential hazards and external impacts [1] Group 2: Testing Methodology - A complete simulation testing platform was constructed to replicate various scenarios for hydrogen gas discharge during pipeline operation, including both non-ignition and ignition combustion discharges [1] - The test evaluated safety performance under multiple pressure and operational conditions, providing valuable data for future large-diameter hydrogen pipeline construction [1] Group 3: Research Outcomes - The test platform enabled the systematic collection of key parameters such as hydrogen concentration distribution, flame structure, thermal radiation intensity, and impact range, enhancing the understanding of hydrogen venting flow and diffusion patterns under high-pressure conditions [1] - The research covered a wide range of conditions, including multi-level pressures from 1 MPa to 10 MPa, various riser heights, pipe diameters, and different configurations of flame arresters [1]