EE WAS TRYING TO OPEN A VALVE THAT WAS FITTED WITH A ""T"" HANDLE. THE HANDLE BROKE AND THE EE STUMBLED BACK HITTING HIS HEAD ON A HEAT EXCHANGER PLATE CAUSING A LACERATION TO HIS HEAD (10 STITC HES REQUIRED). HE ALSO CHIPPED A TOOTH WHEN THE ""T"" HANDLE HIT HIM IN THE MOUTH.