EE WAS ON A LADDER CUTTING BOLTS FROM BETWEEN 2 FLANGES ON A WATER LINE. ANOTHER EE IN THE AREA WAS TALKING TO HIM, WHEN HE TURNED TO SEE WHAT THEY WANTED, HE ACCIDENTLY MOVED THE TORCH ACROSS HIS LEFT FOREARM. EE WAS BARE-ARMED AND NOT WEARING ANY PROTECTIVE ARM COVERUINGS.