Leak detection and fugitive emissions estimates of natural gas transportation.

EHS Techniques was commissioned for a three year LDAR survey of a Natural Gas transportation network in Europe. During the 2013-2015 survey, a total of 120 regulation nodes, 15 compression stations, 3 LNG plants and 3 deep underground storage facilities (onshore & offshore) were monitored. Client specific factors has resulted in an underestimation of 8% to 9% compared to those average HFS emission factors basically because there were some type of components without specific fac- tors (big flanges, pig traps, big connectors, etc.) and the lack of enough representative HFS results. Results will be used to report GHG fugitive emissions of the company and future surveys are now in development.