Case studies of neutron radiography examination at INER

Four years ago, the Institute of Nuclear Energy Research (INER) installed a neutron radiograph facility to examine the NR samples at ZPRL (zero power reactor at Lungtan). Up to 1995, more than ten thousands samples have been examined. The successful cases include the examination of turbine blades, the inspection of detonation cords, etc., and a have wide variety. However turbine blade examinations which combine both tagging and doping during the ceramic core formation process are the major portion of work at our facility. This paper describes those selective cases and our future prospects. (orig.)