EMPLOYEE WAS SPLASHED WITH CAUSTIC THAT WAS ENTRAINED IN SCALE. HE WAS REMOVING SCALE BUILD-UP FROM AN ANGLE VALVE THAT HE WAS REPAIRING. AT THAT TIME HE WAS SENT TO A LOCAL HOSPITAL FOR TREAT MENT. BURNS WERE ONLY FIRST DEGREE. HE WENT TO THE PLANT MEDICAL DEPARTMENT ON 11/21/01 WITH A SEVERLY INFECTED RIGHT ARM. ANTIBIOTICS WERE PRESCRIBED. NO LOST TIME OR WORK RESTRICTIONS.