Rising nitrogen costs at a Gulf Coast refinery pointed to significant system losses, but the source remained unclear. A comprehensive ultrasonic leak survey identified 205 nitrogen leaks totaling 534 CFM and more than $1 million in estimated annual loss. The survey also uncovered previously unknown combustible gas leaks in flare gas, hydrogen and natural gas lines. Download the case study to see how field-verified data gave the refinery a prioritized path to reduce nitrogen consumption, lower costs and improve site safety.