A fire broke out at the AVT-12 installation, a key primary oil processing unit with 12 million tons per year capacity, at the Tuapse oil refinery in Krasnodar Krai, southern Russia, according to preliminary data cited by Exilenova+ in a post between 10:15 p.m. and 10:45 p.m. UTC on Dec. 30. The fire was reported at coordinates 44.1082938828569, 39.10194463778907, updating an earlier blaze ignited by Ukrainian strikes between 9:45 p.m. and 10:15 p.m. UTC the same day, as previously reported by Exilenova+ citing @Archer83Able on X. Separately, a powerful explosion occurred in Bila Tserkva, Ukraine, according to the Київ ІНФО Telegram channel during the 29-minute reporting window. Russia's Локатор России Telegram channel reported ongoing UAV danger in the Novgorod, Pskov, and Tver regions, with additional detections from the border area in the same period.