Overview of refurbishment project of JMTR

Izumo, Hironobu; Hori, Naohiko ; Kaminaga, Masanori  ; Kusunoki, Tsuyoshi ; Ishihara, Masahiro ; Komori, Yoshihiro ; Suzuki, Masahide; Kawamura, Hiroshi

The refurbishment project of the JMTR was promoted with two subjects, the one was the replacement of reactor components, and the other was the construction of new irradiation facilities. On the replacement of reactor components, an investigation on aged components was carried out, for concrete structures, tanks, tubes in order to identify their integrity. After the investigation, some components were decided to replace from viewpoints of future maintenance and improvement of reliability. On the construction of new irradiation facilities, corresponding to the user's irradiation request, new irradiation facilities, such as for LWRs materials or fuels, were installed. Furthermore, new project was selected in order to install new irradiation facilities, such as for Mo production and PIE equipments. The new JMTR will contribute the promotion on research and development of the nuclear energy from basic to applied fields as an internationally utilized facility.