방사성 부식생성물의 자기적 성질을 이용한 제거방법에 대한 연구

A Study on the Removal Method of Radioactive Corrosion Product using its Magnetic Property

Min-Chul Song, Tae-Young Kong, Kun-Jai Lee

Abstract

In a pressurized water reactor, radioactive corrosion products (CRUD) in primary coolant system are one of the major sources for the occupational radiation exposure of the personnel in a nuclear power plant. Through the recent trend of long term fuel cycle in a nuclear power Plant, radioactive corrosion products deposited in reactor core for a long time are also the cause of Axial Offset Anomaly (AOA) having m effect on reactor power by the hideout of boron. CRUD consist primarily of magnetite, nickel ferrite, cobalt ferrite, and so on. They have the characteristic of strong magnetism. Therefore it is performed the conceptual design to develop the filter which removes the CRUD by magnetic field that is generated by an arrangement of permanent and electric magnets. Contrary to the conventional filter, the proposed filter does not interrupt the fluid flow, so there is little pressure drop and it can be used continuously. It is expected to be applied as one of the technologies for removal of the CRUB.

Key Words : Radioactive Corrosion Product, Magnetic Separation, Magnetic Filler, Permanent Magnets, 방사성 부식생성물, 자기분리, 마그네틱 필터, 영구자석

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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