Abstract: “After 100 years of exploitation of crude oil deposits in Romania, in 1967, the communist government decides to supply fuel demand by importing crude oil from Iran. The imported crude oil was wanted to be petrochemically processed in two refineries, Arpechim Pitesti and Petrotel Ploiesti. In order to ensure the transport of crude oil from the port of Constanta to the two refineries, a pipe with a diameter of 350 mm was built. As Iran had entered into an embargo and crude oil could no longer be imported from that area, it was decided to import REBCO crude oil (Rusian export blend crude oil). The most difficult stage in the pipeline installation program was the crossing of the Danube. The Danube River and the Borcea Branch had a length of 2km and 1.6 km, respectively, and a depth between 2 m and 8m.Also the speed of the water made it impossible to deposit sand and alluvium on the bottom of the water (which consisted of limestone and stratified sands). The crossing of the Danube river repr”

Keywords: Danube, croasing, oil, pipelines