Atmospheric crude heaters Reduced-crude vacuum heaters Diluted Bitumen Reboilers Circulating-oil heaters Catalytic-reformer charge Delayed coker heaters Visbreaker heaters – heating section Visbreaker heaters – soaking section Propane deasphalting heaters Hydrocracker charge heaters Xfh Arch Anchor Heat Duty Breeching Damper Crossover Casing Stack Heat Flux Density Flue Gas Corbel Manifold Burner Turndown Coil Sootblower Draft HOW COMBUSTION CONDITIONS INFLUENCE DESIGN AND OPERATION