Abstract
Due to volatile environment and dynamic market of oil business, refineries are always looking for new ways to improve efficiency and productivity. In this research, Concurrent engineering (CE) was considered as one approach which could possibly be used to increase the efficiency of processes. Therefore it was investigated wether CE principles of multidisciplinary team, computer supported information sharing, development of team work environment and group decision making could be applied in various process/projects of a refinery and what influence could be expected in production as well as quality of output in terms of savings or added revenues.