EE WAS IN EVAP ASSISTING EVAP OPERATOR ROD OUT A SAMPLE POINT ON A LINE. THEY REMOVED THE SAMPLEVALVE WITH A BLOCK VALVE CLOSED, INSTALLED A NIPPLE AND VALVE, THEN USED THE ROD OUT TOOL AND CL EANED SAMPLE POINT OUT. EE REMOVED THE ROD OUT TOOL AND WAS PUTTING THE SAMPLE VALVE BACK IN WHEN PIPE WRENCH SLIPPED, SPLASHING LIQUOR ON HIS CHIN AND CHEST.