In the cumene – cumyl hydroperoxide section of a chemical facility, a technician on rounds detected a start of fire at 6.00 pm on a 6 bar steam line in the drain. The blaze resulted from the inflammation of a heat insulator imbibed with cumene / cumyl hydroperoxide (highly inflammable chemicals) insulating the pipe. The fire was quickly brought under control using two fire extinguishers and did not impact the rest of the facility.