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

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...

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

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