EE WAS IN A HURRY AND DID NOT DON THE APPROPRIATE PPE AND DID NOT ISOLATE. THE VALVE PRIOR TO DISCONNECTING THE AIR HOSE. WHEN SPEAKING WITH THE EE HE KNEW THAT HE SOULD HAVE SLOWED DOWN AND T HOUGHT ABOUT THE TASK AT HAND, THE PROPER PPE AND THE PROCEDURE OF ISOLATING THE VALVE.