EE WAS REPAIRING A PUMP AND CHEMICAL FEED LINE FROM A CAUSTIC SODA CHEMICAL TANK. WHILE WORKING ON HIS KNEES TO REINSTALL THE PUMP, HIS ACID SUIT DEVELOPED A HOLE AND ALLOWED THE DILUTED CAUST IC TO BE ABSORBED ON HIS CLOTHES. HE EXPERIENCED A BURNING SENSATION TO HIS RIGHT KNEE AND REMOVED HIS SUIT. HE RECEIVED MEDICAL ATTENTION FOR 2NE & 3RD DEGREE BURNS TO THE KNEE.