Abstract: On February 20, 1990, Employee #1 was working alone near a stripping tank that contained 1,200 gallons of hot caustic chemicals heated to 220 degrees F. The lid flew up and released approximately 50 to 100 gallons of potassium hydroxide over various parts of his body. A "burp" inside the tank occurred due to several factors. Another employee, who was working in another area, heard a "muted explosion" and ran to help Employee #1 until EMS arrived and transported him to the hospital. Employee #1 suffered 2nd- and 3rd-degree burns over 68 percent of his body. He was later flown to a burn center, where he lived for approximately 3 weeks before he died of septicemia.