Non-destructive examination (NDE) methods for joint interfaces between different materials in high heat flux components of ITER divertor should be urgently developed to assure qualit y and reliability of joining techniques. This paper reports the present R&Ds status of NDE for ITER divertor and its outlook. The detection ability of joint defect by using ultrasonic wave and thermography NDE are examined in the joint interface between armor tiles and a cooling tubes of divertor mock-ups. The results of both ...
英字タイトル:
Development of Non-destructive technique for ITER divertor high heat flux component

Representative events selected by the result of Failure Mode Effect Analysis (FMEA) are summarized into three groups, i.e., release of Radioactive Isotopes (RI), pressurization and heatup. With respect to events about release of RI, the maximum released RI is evaluated for three RI inventories, i.e., RI in Vacuum Vessel (VV) (tritium and radioactive dust), RI in purge gas (tritium) and RI in coolant (trit ium and ACP). With respect to the events about pressurization, the maximum pressures of the compartmen...
英字タイトル:
Strategy of Safety Evaluation of Water Cooled Solid Breeder Test Blanket Module

An infrared thermography NDE facility which is utilized in the acceptance test of ITER d ivertor components has been developed in JAEA. This NDE facility can inspect the integri ty of the bonding interface of the divertor components based on its surface temperature response by means of switching of hot (95 deg C)/cold (5 deg C) water. The advantages of this facility are 1) to have active coolant purging system which enables rapid temperatu re change and 2) to inspect the surface and the both side walls of...
英字タイトル:
Development of a non destructive evaluation system using infrared images for divertor on nuclearfusion experiment reactor