JACKING DEVICE FOR PROVIDING CONTACT BETWEEN A JET PUMP AND A RISER IN A BOILING WATER NUCLEAR REACTOR

摘要

A jacking device includes first, second, and third members (51, 52, 53), and a jacking screw (55). The first and second members (51, 52) have sloping side portions (57). The third member (53) has a plurality of sloped side portions (57) and a threaded opening (67) extending from its top portion (69) through to its bottom portion (59). The third member (53) is movably supported between the first and second members (51, 52). The jacking screw (55) engages the threaded opening (67) in the third member (53).