EMPLOYEE WAS STANDING ON A CLEAN COAL BELT ON THE FIRST FLOOR OF THE PLANT APPROX. 30"" ABOVE THE GROUND CUTTING A 4"" PIPE. THE PIPE FELL ON HIS TORCH HOSES AND CUT THEM. THEY BEGAN BURNING AND HE JUMPED OFF THE BELT TO CUT OFF THE TORCH VALVES, TWISTING HIS ANKLE. DID NOT GO TO DOCTOR OR LOSE TIME FROM WORK UNTIL 12/30/01.