EE WAS CHECKING THE WATER LEVELS IN A RADIATOR ON A DIESEL SCOOP. WHILE ATTEMPTING TO LOOSEN THE RADIATOR CAP, THE CAP BLEW OFF AND HOT WATER AND ANTIFREEZE BLEW OUT, BURNING HIS RIGHT ARM AND SIDE. 1ST, 2ND & 3RD DEGREE BURNS TO ARM; 1ST DEGREE BURNS TO SIDE.