Gas leaks are an important safety issue in oil and gas production. During the past fifteen years, a considerable number of studies have was made about how to detect and localize gas leaks. Equipped with sensors measuring the point concentration of specific substances, a variety of mobile robots and technologies have been looking for gas sources. The emergence of new approaches with multiple sensors has enabled a detailed gas detection analysis of the entire pipeline. This book presented a real-time system to detect abnormal events on gas pipes, by developing a data monitoring system to detect the gas levels and concentration using gas leak detector system positioned on robotic vehicle (pioneer p3-dx) combined with modern communication technologies in terms of GPS to locate the robot in real-time accuracy of tracking process. sensor was used in this research to detect the presence of natural gas (CH4) and Liquefied Petroleum Gas (LPG). This sensor was detected the concentration of gas in signal volts forum (as output) which was converted later by the proposed system to (PPM) Particles Per Million