Anonymous
Some not mentioned above:
Recent fatalities (2008-2009):
– 2 fatalities due to scalding after failed coke drum pressure tests. Operators were replacing bottom gasket when hot condensate came out of drum bottom
– 1 fatality from manual bottom unheading when operator opened drum full of hot quench water
– 2 fatalities when heater inlet line ruptured
Other
– piping failures due to high temperature, high sulfur corrosion (increases in operating temperature and sulfur content from original design)
– closed block valve on coke drum inlet, causing heater tube rupture/fire
– fires due to coke drum valving misalignment (HCGO quench oil flowing to open drum, coke drum overhead valves opened to open drum, coke drum inlet line opened to drain)