The Polish pipeline operator (PERN) said it detected a leak on Tuesday evening in one of the two lines of the Druzhba pipeline, the main line carrying Russian oil to Germany.
The leak, on 1 of the 2 strands of the western section of the pipeline, was found in the city of Wloclawek, 70 km from the country’s oil hub Plock in central Poland.
The cause of the incident is unknown at the moment - pumping in the damaged line was shut down immediately. The other oil pipeline is operating without changes.
Druzhba is the world’s largest pipeline system, connecting Siberia and Europe. The pipeline is the main source of oil supplies to Polish refineries, with a total capacity of 56 million tons per year.