TEST METHOD AND APPARATUS FOR LEAKPROOF INTEGRITY OF CONTROL ELEMENT DRIVE MECHANISM NOZZLE FOR COMPREHENSIVE VIBRATION ASSESSMENT OF REACTOR VESSEL INTERNALS

摘要

PURPOSE: A hermetic sealing soundness evaluation method and apparatus of a control rod driving system nozzle for the measurement of a nuclear reactor internal structure synthesis vibration evaluation are provided to easily verify soundness by performing a discrete pressure test for a nozzle. CONSTITUTION: A measuring cable is eliminated in a reserve nozzle (22). A water pressure hose is connected to a socket (23). A lower end of the reserve nozzle is plugged to the socket. An upper end of the reserve nozzle is welded with an omega seal. A pressure gauge (25) is installed on a pressure device (30). [Reference numerals] (AA) A-specification