PKN Orlen-owned Czech oil refiner Unipetrol has halted oil import through the Druzhba pipeline from Russia, citing chloride contamination. The chief of Czech state strategic reserves yesterday tweeted, “Unipetrol has stopped taking oil from the Druzhba pipeline due to detected contamination by chlorides. Further tests of samples are underway”. Czech Industry and Trade Minister was earlier quoted informing about detecting an increased level of contamination in the Druzhba pipeline.