EE WAS USING A STEAM HOSE CONNECTED TO A DRAIN VALVE ON PUMP SUCTION LINE TO CHECK OUT A LOW FLOW PROBLEM. WHEN EE STARTED DISCONNECTING STEAM HOSE FROM DRAIN VALVE THE WELD ON THE PIPE NIPPLE ATTACHED TO THE VALVE FAILED WHICH CAUSED LIQUOR TO SPRAY OUT OF LINE. EE STEPPED DOWN FROM BOTTOM RUNG OF LADDER HE WAS STANDING ON & HIS FOOT SLIPPED ON THE FLOOR THAT WAS NOW WET.