CAPSULE BOTTOM ASSEMBLY FOR A LONG PERIOD IRRADIATION TESTING IN RESEARCH REACTOR

摘要

The present invention relates to a capsular lower end assembly for a long term irradiation test using an irradiation hole in a study, and is characterized in that a capsule end portion assembly for a long term irradiation test using an irradiation hole is formed in a hollow cylindrical shape, A locking groove is formed in the lower side of the irradiation hole to receive the fixing device installed at the lower end of the irradiation hole and is formed in a hollow cylindrical shape so as to form a passage through which the cooling water flowing from the lower side of the irradiation hole passes. A washer which is fitted to the outer circumferential surface of the body part and is installed adjacent to the bottom surface of the body part, an elastic spring which is fitted to the outer circumferential surface of the body part and fixed to the washer at the lower side thereof, And is slid to the inner side of the lower end of the irradiation hole And a bushing fixed to the head to support the washer so that the washer is disposed adjacent to the bottom of the head. Thus, the fatigue caused by the fluid induced vibration due to the rapid flow velocity in the irradiation hole during the long period irradiation test Thereby remarkably reducing the possibility of destruction.