EE WAS WORKING TO CLEAR THE SUCTION LINE ON #45-15 SUMP. PRESSURE HAD BUILT INSIDE OF SUMP SURGE TANK FROM THE SYSTEMS PRIMARY LINE. WHEN SUCTION LINE CLEARED, LIQUOR THAT HAD BUILT UP IN SUMP PIT SPLASHED UP ONTO EE'S UPPER BODY & FACE (EE WAS WEARING ALL REQUIRED PPE), LIQUOR WAS ABLE TO GET INTO RIGHT EYE RESULTING IN CHEMICAL BURN. NO LOST TIME OR RESTRICTED DUTY.