Abstract: At approximately 4:20 p.m. on May 16, 2006, Employee #1 was helping to clear a clogged coke drum. The drum had earlier been filled with water to cool it from an initial temperature of over 800 degrees F. While draining water from the drum, the drain line underneath the drum became clogged. To unclog the drain line, Employee #1 and two coworkers introduced 150 psi steam into the coke drum at the switch deck and bottom deck. Employee #1 went to the switch deck to open a steam valve to unclog the drain line. He then went to the top deck to retrieve rain gear. When the coworkers introduced steam from the bottom deck into the coke drum, it caused hot water and coke to erupt from the top of the open drum and splash onto Employee #1. The water and coke caused second- and third-degree burns over 30 to 40 percent of his body. He was hospitalized with his injury.