Development of efficient dissolution technology for FBR MOX fuel, 5; Endurance test of the bearing for rotary dram type continuous dissolver

Katsurai, Kiyomichi; Kondo, Yoshikazu; Washiya, Tadahiro ; Myochin, Munetaka; Kuroda, Kazuhiko*; Nishikawa, Hideaki*; Takizawa, Takeyuki*; Yamashita, Kazuhiko*

This report presents a knowledge getting from endurance test of the bearing for rotary dram type continuous dissolver which is under development as one of the Fast Reactor Cycle technology Development Project in JAEA. Non lubricant type bearing is preferable to endure heavy radiation environment but abrasion of the bearing is concerned due to heavy weigh and low swing motion. Small scale of the endurance test of the bearing using 4 types of candidates including all-ceramics and hybrid ceramics roll bearing, carbon slide bearing and air bearing was implemented. This report demonstrates the test results of the screening and a way of the improvement for select one.