Pipeline TrialsHamburger Energienetze just kicked off tests on a 450-metre section of its Kattwyk culvert pipeline under Hamburg’s Süderelbe to check if it can carry hydrogen. They’ve run pipeline pigs through it to give a deep clean, then swept the steel with ultrasonic waves and magnetic resonance tools to ensure it holds up. The crew is also fine-tuning the cathodic protection to head off any...