A significant explosion occurred at the Tupras refinery in Izmit, Turkey, around 95 kilometers east of Istanbul. The incident, attributed to a problem during a scheduled emergency drill, was described as very powerful, shaking areas well beyond the facility. Local authorities, including the mayor of Kocaeli province, Tahir Büyükakin, confirmed no immediate injuries were reported. The refinery is one of Turkey’s largest industrial sites, raising concerns about potential operational safety and environmental impacts.