EE WAS HELPING PULL A PIECE OF HIGHLINE DURING A SECTION MOVE. THE HIGHLINE WAS BEING PULLED BY A SCOOP AND BECAME FOULED ON A 6"" JOINT OF WATER LINE. WHEN EE STEPPED TOWARDS THE WATER LINE TO UNFOUL IT, THE WATER LINE BROKE AND A PIECE OF IT STRUCK HIM ON THE RIGHT LEG, CAUSING LACERATION. THIS OCCURRED IN THE #5 ENTRY OF THE 001-0 MMU.