DOUBLE INDEXING PATH SELECTOR FOR NUCLEAR MEASUREMENT DEVICE OF ATOMIC REACTOR, CAPABLE OF IMPROVING AVAILABILITY RATIO OF POWER PLANT AND MINIMIZING EXPOSURE OF OPERATORS TO IRRADIATION

摘要

PURPOSE: A double indexing path selector for nuclear measurement device of atomic reactor is provided to improve the efficiency of a power plant and to minimize the exposure of operators to irradiation by replacing a conventional path selector. CONSTITUTION: A double indexing path selector for nuclear measurement device of atomic reactor includes a body(310), an external path selector(320), a plurality of internal path selectors(330), and an inserted-pipe twist preventer(340). The body includes upper and lower fixing plates(311,312) coupled with each other via a coupling rod(313). A seal table and a pipe are implemented on a bottom of the body. The external path selector includes upper and lower rotating plates(321,322), an actuator(324) coupled with a fixing shaft via an actuating belt, and a controller(325) maintaining a uniform rotation range. The internal path selectors are implemented to cross one another with the fixing shaft at the center. The internal path selectors are rotatably implemented with the fixing shaft at the center. The inserted pipe twist preventer rotates to prevent the inserted pipe from being twisted.