Saied Akhondnasab - NIGC-IGEDC-IGAT۵.۶&۹ Corrosion Prevention Engineering-Tehran University
Seyyed Farshid Kashani Bozorg - Tehran University- Faculty of Engineering - Metallurgy Group

The cause of pipeline failures can be divided into a few major categories as determined from government statistics. of these categories two, outside force and corrosion .account for more than half of all service failures in both gas and liquid pipelines. the two major causes as well as the less common cause are explained and the current technology for prevention of pipeline is discussed.

pipeline failure, corrosion, external force, prevention