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Device and method for repairing nuclear fuel assembly

A nuclear fuel assembly and repair method technology, applied in the direction of reactor fuel elements, nuclear engineering, nuclear power generation, etc., can solve problems such as waste of nuclear resources, single rod damage, and inability to continue to be put into the reactor for re-operation, etc. resource effect

Active Publication Date: 2017-10-10
CHINA GENERAL NUCLEAR POWER OPERATION +2
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Problems solved by technology

[0002] During the operation of the nuclear power plant, a single rod in the nuclear fuel assembly may be damaged, and the fuel assembly after the damage of the single rod will not be able to continue to realize the function of putting into the stack and re-operating
[0003] At present, since the single-rod damaged nuclear fuel assembly does not have the function of entering the reactor, and there is no targeted repair method for the damaged nuclear fuel assembly, it can only be replaced with a new nuclear fuel assembly, and the damaged nuclear fuel assembly can only be abandoned. lead to a large waste of nuclear resources

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  • Device and method for repairing nuclear fuel assembly
  • Device and method for repairing nuclear fuel assembly
  • Device and method for repairing nuclear fuel assembly

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Embodiment Construction

[0041] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The invention provides a nuclear fuel assembly repair method.

[0043] The method includes steps as follows:

[0044] Step 1, disassembling the upper nozzle 13 of the nuclear fuel assembly 10 to be repaired;

[0045] Step 2, taking out the fuel rod 12 to be replaced;

[0046] Step 3, inserting a new fuel rod into the original hole position of the fuel rod 12;

[0047] Step 4, install the upper tube base 13 .

[0048] refer to figure 1 The nuclear fuel assembly 10 includes a frame 11, a fuel rod 12 vertically inserted in the frame, a lower socket (not shown in the figure) arranged at the bottom of the frame 11, and an upper socket 13 arranged at the upper end of the frame 11. There are more than 200 fuel rods 12 in the framework 11. In addition to the fuel holes for accommodating the fuel rods 12, the frame...

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Abstract

The invention discloses a nuclear fuel assembly repair device and method. The nuclear fuel assembly comprises a fuel rod, a skeleton for insertion of the fuel rod, a lower tube base arranged at the lower end of the skeleton and an upper tube base arranged at the upper end of the skeleton. The upper tube base is connected to the skeleton by bolts. The nuclear fuel assembly repair device comprises a fuel basket with a horn-shaped opening, a horn mouth adapter for fixing the nuclear fuel assembly into the fuel basket, a suspender rod for taking and installing the upper tube base and a rod replacement clamp for drawing the fuel rod to be replaced out of the skeleton and inserting the fuel rod to be inserted into the skeleton. The nuclear fuel assembly repair method has the advantages of simple processes, safety, reliability and saving of a lot of a nucleus resource.

Description

technical field [0001] The invention relates to a repairing device and method for a nuclear fuel assembly. Background technique [0002] During the operation of the nuclear power plant, a single rod in the nuclear fuel assembly may be damaged, and the fuel assembly after the damage of the single rod will not be able to continue to realize the function of putting into the stack and re-operating. [0003] At present, since the damaged nuclear fuel assembly does not have the function of entering the reactor, and there is no targeted repair method for the damaged nuclear fuel assembly, it can only be replaced with a new nuclear fuel assembly, and the damaged nuclear fuel assembly can only be abandoned. It has led to a large waste of nuclear resources. Contents of the invention [0004] The main purpose of the present invention is to provide a nuclear fuel assembly repair device and method, aiming at reducing the waste of nuclear resources. [0005] In order to achieve the ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/26G21C19/19
CPCY02E30/30
Inventor 乔素凯黄鸿志陈鹏尹刘长杰
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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