Annual report of JMTR, No.16, FY2001; April 1, 2001 - March 31, 2002

Department of JMTR

During the FY2001 (April 2001 to March 2002), the JMTR (Japan Materials Testing Reactor) was operated in 5 operation cycles (113 days) for irradiation studies on the IASCC of the LWR materials, development of fusion blanket materials, radioisotope productions, and so on. The total number of capsules and hydraulic rabbits irradiated were 105 and 59, respectively. Technology development programs were conducted in the following fields. As concerning to the IASCC studies, an advanced water control system and saturation temperature capsulesモ were developed and installed in the JMTR, and the performance tests were carried out. Also a crack growth testing device for irradiated specimens was developed and installed in the hot laboratories. An efficient recycle process of Li was developed for the production of pebble type tritium breeder material, and the properties of beryllides were examined, both for the development of fusion reactor blanket. This report summarizes these activities performed in the department of JMTR during the FY2001.