Furnaces: Startup and Shutdown

Describe the major operator responsibilities involved in preparing a furnace for startup. Explain how and why a furnace is purged. Describe how to establish the flow of process fluid in a furnace. Describe how to light gas burners oil burners and combination burners. Describe a typical startup procedure for natural draft and balanced draft furnaces. Describe a typical planned shutdown procedure. Identify furnace conditions that may require an emergency or unplanned shutdown. Identify typical emergency shutdown systems and equipment.