A fire that shut Sasol’s Natref oil refinery leaves South Africa with only one crude-processing plant running, highlighting a growing reliance on fuel imports. The January 4 blaze at the facility — the nation’s only inland crude refinery — has caused concerns over jet-fuel supply to Johannesburg’s OR Tambo International Airport, the continent’s biggest. That’s prompting shippers to schedule fuel deliveries via pipelines and rail from neighbouring Mozambique to prevent shortages, Airports Company of South Africa said in a post on X. Sasol wouldn’t confirm a date for a restart of the plant as assessments are under way, it said Tuesday. The Fuel Industry Association of South Africa expects the unit will be back online by February 21.