For gas pipeline operators, the EU methane regulations introduce stringent requirements for continuous monitoring, systematic leak detection and repair (LDAR), and accurate emissions reporting, all aimed at minimizing methane emissions along transmission and distribution networks.

Conventional survey methods include the use of OGI cameras and handheld detectors, as well as mobile and aerial surveys. While OGI and handheld devices offer high sensitivity and real-time source localization, their limited inspection speed makes them unsuitable for longer transmission pipelines and pipeline networks. Vehicle-mounted sensors increase output efficiency but remain restricted to accessible terrain, leaving certain areas uninspected. Aircraft- and helicopter-mounted sensing provide accurate detection but entail high costs and logistical complexity. Drone-based remote sensing offers a promising alternative, combining accuracy with greater flexibility. However, they are yet typically of limited use due to regulatory and battery constraints.

The METHASCAN inspection addresses these challenges by using a fixed-wing drone for BVLOS (Beyond Visual Line of Sight) Airborne Leak and Emission Surveys (ALES). With SAIL III certification, the system eliminates the need for a permanently observing ground crew and reduces regulatory burden. Operating at travel speeds of ~85 km/h and achieving a coverage of ~150 km per battery cycle maximizes survey efficiency and output, while inspection altitudes up to 120 m further allow operation within restricted areas, such as nature reserves or bird protection zones. Overall, this approach enables the complete, cost-efficient pipeline monitoring for methane leak detection fully aligned with the requirements of the EU methane regulations.