In September 1998, the Sollac Florange HSM started up its second reheating furnace, with nearly the
same size and thermal power as the first furnace built in 1983. This equipment has introduced new
techniques, such as pulse width modulation on lower zones in order to control thermal power, or gas
characteristics fine tuning with the correctometer using a furnace with only one burner, etc. Using two
furnaces instead of one and a higher reheating capacity means some significant changes for the other
tools of the HSM.