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Spent fuel storage pool system and installation/replacement method of filter element of spent fuel storage pool system

A technology for spent fuel and water pools, applied in the field of nuclear engineering, can solve problems such as insufficient processing capacity, achieve the effects of remote installation, maintenance and replacement, reduce radiation risks, and facilitate hoisting

Active Publication Date: 2022-07-15
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a spent fuel storage pool system and a method for installing / replacing its filter element in view of the above deficiencies in the prior art. The problem of insufficient processing capacity in the purification outside the pool can meet the operation requirements of large spent fuel storage pools. This method can realize remote maintenance and replacement, which can reduce the radiation risk of personnel

Method used

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  • Spent fuel storage pool system and installation/replacement method of filter element of spent fuel storage pool system
  • Spent fuel storage pool system and installation/replacement method of filter element of spent fuel storage pool system
  • Spent fuel storage pool system and installation/replacement method of filter element of spent fuel storage pool system

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Embodiment 1

[0037] This embodiment discloses a spent fuel storage pool system, which includes a spent fuel storage pool and a purification unit. The purification unit is set in the spent fuel storage pool. The purification unit includes a pump and a purification section, and the pump is communicated with the input end of the purification section. , the pump is used to transport the pool water in the spent fuel storage pool to the purification section, the purification section is used to purify the pool water transported by the pump, and the output end of the purification section is connected to the spent fuel storage pool to discharge the purified pool water back to into the spent fuel storage pool.

[0038] Compared with the prior art, the spent fuel storage pool system of this embodiment can realize purification in the pool, solve the problem of insufficient processing capacity in the purification outside the pool, and meet the operation requirements of large spent fuel storage pools.

...

Embodiment 2

[0063] This embodiment discloses a method for installing / replacing a filter element, which is used in the spent fuel storage pool system described in Embodiment 1, which includes an installation step and a replacement step.

[0064]The installation steps include: connecting the spreader to the first spreader interface 3 , hoisting the first hanging basket 1 to the segment body of the spent fuel storage pool system through the spreader, and installing the first hanging basket 1 on the bottom of the segment body 6 Then connect the sling to the second sling interface 4, and lift the second sling 2 to the segment body 6 of the spent fuel storage pool system through the sling, so that the bottom of the second sling 2 The end is installed on the top of the first gondola;

[0065] The replacement steps include: firstly connect the spreader to the second spreader interface 4, hoist the second hanging basket 2 from the spent fuel storage pool through the spreader to a non-radioactive o...

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Abstract

The invention discloses a spent fuel storage pool system which comprises a spent fuel storage pool and a purification unit, the purification unit is arranged in the spent fuel storage pool and comprises a pump and a purification section, the pump is communicated with the input end of the purification section, the pump is used for conveying pool water in the spent fuel storage pool to the purification section, and the purification section is communicated with the pump. The purification section is used for purifying the pool water conveyed by the pump, and the output end of the purification section is communicated with the spent fuel storage water pool so as to discharge the purified pool water and return the purified pool water to the spent fuel storage water pool. The invention further discloses an installation / replacement method of the filter element of the spent fuel storage pool system. The system provided by the invention can realize in-pool purification, and compared with the prior art, the system provided by the invention can solve the problems of insufficient treatment capacity and the like of out-pool purification, and can meet the operation requirements of large spent fuel storage pools. The method can realize remote maintenance and replacement.

Description

technical field [0001] The invention belongs to the technical field of nuclear engineering, and in particular relates to a spent fuel storage pool system and an installation / replacement method for a filter element thereof. Background technique [0002] In nuclear fuel reprocessing projects, spent fuel is stored in pools for subsequent processing. During storage, radioactive elements such as strontium, cesium, and cobalt attached to the outside of spent fuel assemblies are gradually released into the pool, resulting in an increase in the radioactive concentration of the storage pool. The ion exchanger is the key equipment to purify the water quality of the pool water and keep the radioactive concentration of the pool water not exceeding the limit value. The filter element is the core component of the ion exchanger to realize the purification function. , chlorine and other anions that accelerate the corrosion of stainless steel, to ensure that the radioactivity of the pool wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04G21C19/07
CPCC02F1/001C02F1/42G21C19/07C02F2201/002C02F2101/006Y02E30/30
Inventor 王勇史惠杰常青秦永泉阚琛徐磊胡锡文刘继连杨宏悦
Owner CHINA NUCLEAR POWER ENG CO LTD
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