Jacek Marczyk, M.Sc. graduated from the Department of Drilling, Oil and Gas at AGH University of Science and Technology in 1996. Since that time, he has been working for the Tarnow branch of Gas Transmission Operator GAZ-SYSTEM S.A. and since 2009 he has been in charge of the Branch Gas Dispatch Service. He takes keen interest in computer software used for the gas system, optimal functioning of transmission systems and new technologies in the gas industry. He has co-authored a guide entitled “Gas Installations and Networks in Practice.