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Method for coping with fall of spent fuel container, device and loading well/cleaning well

A spent fuel and container technology, applied in the field of nuclear power, can solve the problems of not changing the "hard impact" contact mode between the spent fuel container and the floor, and the impact cannot be reduced, and achieve the effect of simple structure, avoiding strong vibration, and reducing the impact of impact

Active Publication Date: 2020-02-07
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) Although the bearing capacity of the floor has been enhanced, the "hard impact" contact method between the spent fuel container and the floor has not been changed, and the severe vibration of the floor caused by the fall cannot affect the surrounding equipment

Method used

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  • Method for coping with fall of spent fuel container, device and loading well/cleaning well
  • Method for coping with fall of spent fuel container, device and loading well/cleaning well
  • Method for coping with fall of spent fuel container, device and loading well/cleaning well

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment discloses a method for coping with the falling of the spent fuel container, and the specific steps are as follows:

[0033] Vibration damping is provided inside the loading well or cleaning well, that is, the vibration damping setting is arranged inside the loading well or cleaning well, so that when the spent fuel container falls, the impact energy caused by the falling of the spent fuel container can be absorbed.

[0034] Specifically, the vibration damping setting inside the loading well or cleaning well is as follows: a vibration damping unit can be installed at the bottom of the loading well or cleaning well, and the huge impact caused by the falling of the spent fuel container on the loading well or cleaning well can be weakened by the vibration damping unit In addition, a support unit is provided in the loading well or cleaning well and outside the damping unit to protect the damping unit, and then steel cladding is set on the support unit to prote...

Embodiment 2

[0036] This embodiment discloses an anti-drop impact device, that is, a device for dealing with the drop of a spent fuel container, including a vibration-damping unit and a support unit, wherein: the vibration-damping unit includes a vibration-damping body 1 to reduce the impact force of the drop; the support unit is designed It is outside the vibration-damping unit and is used to protect the vibration-damping unit so as to prevent the vibration-damping body 1 from being damaged under normal working conditions.

[0037] Specifically, such as Figure 1-3 As shown, the damping body 1 is preferably an autoclaved aerated concrete block (hereinafter referred to as a cut block). The specific parameters of the block are not further limited in this embodiment. Specifically, it can be determined by reducing the scale experiment and software analysis and calculation. Sure. The number of damping bodies 1 can be one or more. In this embodiment, there are preferably multiple damping bodie...

Embodiment 3

[0045] This embodiment discloses a loading well / cleaning well of a nuclear fuel plant. The loading well / cleaning well includes a wall and a bottom plate, and also includes the anti-drop impact device described in Embodiment 2. The anti-drop impact device is arranged in the loading well / cleaning well. Clean the floor of the well.

[0046] Further, the supporting unit on the anti-drop impact device forms a false joint with the inner wall of the wall, and the upper surface of the supporting unit is provided with a steel cladding.

[0047] Specifically, such as Figure 2-3 As shown, the side plate 4 on the support unit and the inner side of the wall of the loading well / or cleaning well form a false seam (false seam, that is, between the side plate 4 on the supporting unit and the inner side of the wall of the loading well / or cleaning well. Closely attached, but not connected by reinforcement, are independent of each other). The upper surface of the top plate 5 of the anti-drop i...

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Abstract

The invention discloses a method for coping with the fall of a spent fuel container. Vibration reduction setting is performed in a loading well or a cleaning well, so that the impact energy can be absorbed when the spent fuel container falls. The invention also discloses an anti-fall impact device. The device includes a vibration reduction unit and a supporting unit; the vibration reduction unit includes a vibration reduction body, and the supporting unit is arranged outside the vibration reduction unit to protect the vibration reduction unit. The invention further discloses the loading well / cleaning well in a nuclear fuel plant. The loading well / cleaning well comprises a wall body, a bottom plate, and the above anti-fall impact device, and the device is arranged on the bottom plate. The loading well / cleaning well can reduce the impact force of the fall and avoid causing strong vibration, thereby effectively reducing the impact effect on a main structure and peripheral equipment.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and in particular relates to a method and device for coping with the drop of a spent fuel container and a loading well / cleaning well including the device. Background technique [0002] In the nuclear power plant fuel building, during the operation of transferring the spent fuel container to the loading well or the cleaning well, the spent fuel container often falls, causing a huge impact on the floor of the loading well or cleaning well, causing the floor to vibrate. The equipment on the floor will cause very adverse effects, and it will also affect the stability of the surrounding walls and other structures. [0003] At present, the method to deal with the impact caused by the falling of the spent fuel container is mainly to increase the thickness of the floor to enhance the ability to resist the impact. There are following deficiencies in this method: [0004] (1) Even if the floor is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/06G21C19/07
CPCG21C19/06G21C19/07Y02E30/30
Inventor 李杰蔡利建马英杨建华于跃刘景琛王彦超王鹏
Owner CHINA NUCLEAR POWER ENG CO LTD
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