Spent fuel defect detecting system

Abstract

The invention relates to a system for detecting if nuclear waste defect exists in a heavy water furnace. In the case of existing defects of pin holes in the nuclear waste, the system can be used for detecting / judging if the defect of nuclear waste exists by testing and analyzing the collected nuclear schizoid nuclear matters (liquid and gas) leaked on the exterior of a fuel rod. The system can run as a spent fuel defect detecting system of a heavy water furnace nuclear waste detecting device by being mounted in a heavy water furnace type power station nuclear waste storage groove, while some devices (jars and peripheral systems and devices) which can release high radioactive rays are arranged in the water in order to detect the nuclear waste. The system of the invention is characterized in that devices can be dissembled, salt can be prepared and devices can be moved after ending the nuclear waste detection. In an atomic force power station, the nuclear fuel defect has high radioactive ray quantitative change due to the nuclear fission matters released from the nuclear fuel, so the fuel defect is required to be detected rapidly. A detecting device manufactured according to the invention can quickly and safely detect the nuclear fuel.

Description

technical field [0001] The invention relates to heavy water furnace nuclear waste, in particular to a system for timely soundness detection when abnormality occurs in the nuclear waste. Background technique [0002] In general, nuclear fuel assemblies for heavy water furnaces include: uranium sintered bodies that generate heat through nuclear fission; fuel rods that hold the sintered bodies in zirconium alloy cladding tubes; rod end bonding plates that support both sides of the nuclear fuel assembly; sealed fuel rods Rod end caps at both ends; supports connected to fuel rods; spacers, etc. [0003] However, during the operation of the nuclear fuel assembly inside the nuclear furnace, there is a possibility that defects may occur in the assembly due to interference between adjacent fuels or structures. Therefore, in an atomic power plant, in order to cope with the defects occurring in the burning nuclear fuel aggregate, a detection device capable of detecting the fuel is req...

AI Technical Summary

Problems solved by technology

[0005] For example, the detection device is generally installed in a deep pit (Pit) at a depth of 5m from the nuclear waste storage tank of the power station. There is no detection device in use at present. In the absence of a clear cause of defective fuel and countermeasures, It is temporarily stored in the storage tank of the power station alone, so a safe permanent measure for judging whether it is defective fuel or not is required

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