DIMENSIONAL MEASUREMENT AND INSPECTION SYSTEM OF CANDU FUEL BUNDLE IN-BAY OF CANDU POWER PLANT

摘要

Provided is a dimensional measurement and inspection system of a CANDU nuclear fuel bundle in a water chamber (reception bay) of a Heavy water nuclear reactor. In the system, a dimension measuring unit measures a dimension (i.e., surface profile of fuel rod, diameter and length of fuel bundle, end plate waviness of fuel bundle, circumferential profile of fuel bundle) of the nuclear fuel bundle by using a plurality of linear variable measurement sensors (LVDT) . An inspecting unit inspects a surface of the nuclear fuel bundle through a radiation tolerant camera. A control unit automatically processes a variety of data and image data, which are provided from the dimension measuring unit and the inspecting unit, by using a control computer. The system accurately measures and inspects the nuclear fuel bundle in air or water to output its resultant values.