PRESSURE-LOSS ADJUSTING-MEMBER INSTALLATION TOOL

摘要

[Problem to be Solved] To provide a pressure-loss adjusting-member installation tool that can install a number of pressure-loss adjusting members at desired positions easily. [Solution] A pressure-loss adjusting-member installation tool 70 to be used at a time of assembly of a reactor includes: pressure-loss adjusting-member grippers 80 each of which can freely grip or release a pressure-loss adjusting member, which is arranged at a position between a lower nozzle arranged at one end of a fuel assembly having a relatively small pressure-loss when light water used as a primary coolant flows and a lower core support plate, and can cause the light water to pass therethrough in a state with a pressure-loss being increased more than that of when the light water passes through only core support plate flow holes formed on the lower core support plate; and a frame 71 that holds a number of the pressure-loss adjusting-member grippers 80 in a same positional relationship as a relative positional relationship between the fuel assemblies arranged in plural on the lower core support plate. [Representative Drawing] FIG. 10