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Off-line device used for spent fuel transporting cask helium purification and cooling

A technology for transportation containers and spent fuel, which is applied in radioactive purification, portable protective containers, nuclear engineering, etc. It can solve the problems of not considering inner cavity helium purification and cooling devices, and achieve the effect of convenient transportation of equipment

Pending Publication Date: 2018-11-02
JIANGSU NUCLEAR POWER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For other types of spent fuel containers, they are processed through the built-in ventilation system of the plant, and the off-line inner cavity helium purification and cooling device is not considered

Method used

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  • Off-line device used for spent fuel transporting cask helium purification and cooling

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Embodiment 1

[0026] Valve AA014, pressure gauge CP001 and thermometer CT001 are arranged in series upstream of water level controller AT001, valve AA010 and valve AA012 are arranged in parallel downstream of water level controller AT001 and connected to the pool; valves AA001 and AA002 are located downstream of water level controller AT001 to control the gas pipe The downstream of it is the precooler AT002, the valve AA003 and the gas-water separator AT003 connected in turn. The thermometer CT002 is arranged in the precooler AT002, and the thermometer CT003 is arranged on the pipeline between the precooler AT002 and the valve AA003. The meter CL002 monitors the liquid level of the gas-water separator AT003; the refrigerator AT007 provides the cold source for the pre-cooler; the downstream of the gas-water separator AT003 arranges two pipelines in parallel, and is controlled by the valve AA011 and the valve AA013 respectively, and the separated water is discharged into the pool The downstrea...

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Abstract

The invention belongs to the technical field of nuclear fuel back end processing, and particularly relates to an off-line device used for spent fuel transporting cask helium purification and cooling.The device comprises a water level controller, a precooler, a gas-water separator, a filter, a molecular sieve and an activated carbon bed; one downstream path of the water level controller is connected to a pool, and the other path is connected with the precooler through a valve; the lower stream of the precooler is connected with the gas-water separator; one downstream path of the water level controller drains separated water to the pool, and the other path is connected to the molecular sieve through the filter; the lower stream of the molecular sieve is connected with the activated carbon bed; paths connected with a purifying trolley are all arranged at the lower streams of the filter, the molecular sieve and the activated carbon bed. According to the device, on the one hand, helium ina cask can be cooled to 35 DEG C from 200 DEG C, on the other hand, the helium can be purified, and the radioactive emission requirements are met.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel back-end processing, and in particular relates to an off-line device for helium purification and cooling of spent fuel transport containers. Background technique [0002] With the prolongation of the service life of nuclear power units, the spent fuel assemblies produced by the operation accumulate year by year, approaching the design capacity of the spent fuel pool, and it is necessary to consider the use of transport containers to transport the spent fuel out of the spent fuel pool. Taking the VVER reactor-type spent fuel transportation container as a reference, the VVER reactor-type spent fuel transportation container is a TUK-153 spent fuel transportation container designed and manufactured in Russia. After the loading operation is completed, 0.08MPa(a) Helium is used to establish the thermal balance between the spent fuel assembly cladding and the cavity. According to the design calculat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F5/10G21F9/02
CPCG21F5/10G21F9/02
Inventor 张震张振中欧阳钦江峰管玉峰朱金雄魏建军王春阳曹百通嵇永臣高超
Owner JIANGSU NUCLEAR POWER CORP
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