Dry-type hoisting method for fuel-lacking assembly

A hoisting method and spent fuel technology, applied in the direction of reactor fuel elements, reactors, greenhouse gas reduction, etc., to achieve the effect of low lifting capacity and low shielding requirements

Inactive Publication Date: 2012-07-11
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the defects of the prior art and provide a hoisting method that can safely and effectively hoist spent fuel when neither the wet hoisting method nor the naked hoisting method can be used

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific embodiment:

[0021] A dry hoisting method for a spent fuel assembly, comprising the steps of:

[0022] (1) Put the hanging basket into the positioning hole of the hanging basket fixing stand in the pool with the bridge-type driving auxiliary hook and the pneumatic tool of the hanging basket, and use the component underwater operation tool to load the spent fuel assembly into the hanging basket underwater;

[0023] The bridge crane is a commonly used lifting device in the engineering field, and the auxiliary hook of the bridge crane is an auxiliary hook in the bridge crane. The hanging basket pneumatic tool is a commonly used hanging basket driving device in the prior art, and the device is used in both wet hoisting methods and naked hoisting methods. The hanging basket is a device used to hold suspended objects.

[0024] (2) Lift the shielding transfer device above the tank filling pos...

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PUM

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Abstract

The invention belongs to a hoisting method for a fuel-lacking assembly, in particular relates to a dry-type hoisting method for the fuel-lacking assembly. The method comprises the following procedures: (1) loading the fuel-lacking assembly into a hoisting basket under water; (2) hoisting a shielding transporter above a pool canning position and drawing a lower baffle out; (3) lifting the hoisting basket containing the fuel-lacking assembly into the shielding transporter, closing the lower baffle and locking a safety locking mechanism; (4) draining the water thoroughly; (5) jointing the shielding transporter with a transportation container with an opening; (6) opening the lower baffle of the shielding transporter, and putting the hoisting basket containing the fuel-lacking assembly into the transportation container; (7) hoisting the shielding transporter away from the transportation container; (8) covering the transportation container in a seal manner; and (9) conducting check on the radiation level, air tightness and surface pollution of the transportation container containing the fuel-lacking assembly, after passed examination, loading the transportation container on a vehicle to be transported outwards. The hoisting method provided by the invention has the advantages of not generating safety problems, being lower in requirements on shielding of a plant, volumes of the plant and a water pool, and the hoisting capacity of a crane.

Description

technical field [0001] The invention belongs to a hoisting method of a spent fuel assembly, in particular to a dry hoisting method of a spent fuel assembly. Background technique [0002] The technology of transferring spent fuel assemblies from the pool to the RY-1 transport container is a key technology for the treatment of spent fuel from nuclear reactors such as power reactors and research reactors. At present, the common methods in China are wet hoisting and naked hoisting. [0003] Wet hoisting is when the spent fuel assembly is transported in the RY-1 transport container. Generally, the transport container is placed in a pool, and the spent fuel assembly is loaded into the transport container from the top underwater, and then the spent fuel assembly and the transport container are lifted together. Out of the pool, seal the drain and check for leaks, and transport it out for disposal after passing the test. The disadvantage of wet hoisting technology is: limited by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/33
CPCY02E30/30
Inventor 罗文广袁志敏闵照地李文钰唐坤林徐川黄飞李劲松
Owner NUCLEAR POWER INSTITUTE OF CHINA
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