EMPLOYEE WAS WALKING IN HIS GENERAL WORK AREA WHEN HE STEPPED IN A WET AREA THAT HAD BEEN CREATED BY CAUSTIC LEAKING FROM SOME OVERHEAD PIPING. THE EE SLIPPED AND FELL LANDING ON HIS LEFT ELBO W. THIS RESULTED IN A FRACTURED LEFT ELBOW, MAKING THIS A REPORTABLE INCIDENT. NO LOST TIME, RESTRICTED DUTY ONLY.