EMPLOYEE STATES HE WAS WORKING ON PACKING ON PUMP. LINE HAD BEEN PLUGGED CAUSING WATER TO RE-CIRCULATE INSIDE PUMP AND GET HOT. WHEN HE OPENED PACKING, HOT WATER GOT ON FACE AND NECK, CAUSING 1ST DEG. BURN, SMALL SPOT ON NECK BLISTERED RESULTING IN 2ND DEG. BURN.