City on Fire (1979)
City on Fire is a 1979 disaster film directed by Alvin Rakoff and featuring an all-star cast. The film’s plot revolves around a disgruntled employee who sets fire to an oil refinery, setting off a blaze which engulfs an entire city. People try to either fight or flee the fire as it spreads throughout the city. Some elements of the disaster depicted reflect the Texas City Disaster of 1947.
More at Wikipedia.