Bellows for Control Rod Drive Mechanism of Monju

None

松本 光雄; Ogawa T*; Ishii Y*; Yamagis*; Suzuki*

Matsumoto, Mitsuo; Ogawa T*; Ishii Y*; Yamagis*; Suzuki*

None

The full mock-up operation test of Control Rod Drive Mechanism (CRDM) for "MONJU" have been carried on since 1972 in OEC of PNC. Welded type bellows were adopted for CRDM as the boundary between sodium and atmosphere. In design, two different locations were considered for bellows, one in sodium and the other in argon gas with sodium vapor and some experiences on the bellows have been obtained. Besides the prototype tests of CRDM, several R&D on CRDM bellows, such as environment effect test and endurance test are conducted.