INJURED WAS JUMP STARTING A LIGHT PLANT WITH JUMPER CABLES HOOKED FROM THE WELDER ON A SER- VICE TRUCK TO THE BATTERY OF A LIGHT PLANT. AS HE DISCONNECTED THE JUMPER CABLES FROM THE LIGHT PLANT BATTERY IT ARKED, CAUSING THE BATTERY TO EXPLODE. HE HAD CHEMICAL EXPOSURE TO HIS (R) EYEAND FACE. HE WAS TAKEN TO THE HOSPITAL(ER) WHEREHE WAS EXAMINED. RELEASED BACK TO WORK W/O RESTR