THE EE ALONG WITH TWO OTHER EE S WERE INSTALLING A CAP ON THE END OF THE SLURRY LINE TO THE SLURRY COOLER SURGE TANK. THE CAP HAD BEEN REMOVED TO KEEP STEAM FROM DRAFTING THROUGH THE SCRUBBER DURING INSPECTION. WHILE REPLACING THE CAP, STEAM BLEW OUT OF THE PIPE ACROSS THE EE'S FACE AND ARM CAUSING BURNS TO APPEAR ON BOTH.