In a recent H2 View webinar, Chuck Hayes from Swagelok discussed the distinct challenges of designing hydrogen fluid systems compared to traditional industrial uses. Hayes highlighted the unique characteristics of hydrogen as the smallest and lightest molecule, emphasizing the need for specialized sealing solutions to prevent leaks. He pointed out that conventional design principles used in oil and gas applications may not directly apply to hydrogen systems due to differences in handling high-pressure gases. Hayes stressed the importance of avoiding component oversizing in hydrogen system design to enhance sealing efficiency and reduce costs. Additionally, he recommended the use of tubing over piping for better strength-to-weight ratios and smoother internal surfaces to mitigate pressure drops and leak risks. Hayes also underscored the significance of expert consultation early in the design process to ensure safety, efficiency, and cost-effectiveness of hydrogen systems. The webinar concluded with a call to involve experts from the outset to prevent major incidents. Hayes' insights shed light on the evolving landscape of hydrogen system design and the critical role of precise engineering and safety standards in navigating this new frontier.