Home › Forums › Coking › Operations › Training, services, people, procedures, lessons learned › Coke drum heat up This topic contains 1 reply, has 2 voices, and was last updated by Claus Graf 14 years ago. Author Posts June 18, 2008 at 5:25 pm #3574 Anonymous How long do most cokers heat the empty Coke drums before switching into from a full drum? What is industry practice? What is the shortest time I can use for heat up? Thanks June 18, 2008 at 5:43 pm #6774 Claus GrafParticipant I depends on your cycle time. If you are running on a 12 hr cycle, you have 2.5 hours to warm-up the empty drum. Drum cooling and warm-up time has a big effect on drum stresses. Regards, CG Author Posts You must be logged in to reply to this topic.