Development of measuring instruments for material irradiation tests

Kitagishi, Shigeru  ; Tanimoto, Masataka ; Iimura, Koichi ; Inoue, Shuichi ; Saito, Takashi; Omi, Masao; Tsuchiya, Kunihiko 

The Japan Materials Testing Reactor (JMTR) has been utilized for the various neutron irradiation tests of fuels and materials, as well as for radioisotope production since achieving the first criticality in March 1968. The operation of JMTR was halted for the refurbishment in August 2006. The new JMTR is expected to contribute to many fields: the lifetime extension of LWRs and the expansion of industry use. To meet a wide range of users' needs, the development of new irradiation technologies has been carried out for the new JMTR. This report summarizes the present conditions of the development of FP gas pressure gauges, multi-paired thermocouples, ECP and ceramics sensors.