고리 1호기 해체 시 방사성석면함유폐기물 처리 및 처분적합성 평가

Abstract

A sbestos-containing materials are mainly used in nuclear power plants as thermalinsulation materials, and others are also ceiling materials and wall materials. In particular, nuclearpower plants built between the 1970s and 1990s are at risk of overexposure due to the widespread useof asbestos. In the case of Kori Unit 1, which was built completely in July 1978, Radioactive Asbestos-Containing Materials (RACM) still partially exist in the containment building. In case of RACM, handlingis more difficult, and the risk increases further due to the radioactivity along with the hazard of asbestositself. However, it is true that most of the guidelines for the decommissioning focus on radioactivity andare not relatively concerned with the non-radioactive risk factors. Therefore, in this paper, a reasonabletreatment method (High temperature melting) is established based on the current management statusinvestigation on the types, characteristics, and hazardous treatment methods of Radioactive Asbestos-Containing Waste (RACW). Afterwards, the amount and reduction rate of RACW at Kori unit 1 is evaluatedbased on the theoretical and experimental background. In addition, it is confirmed that the final wasteform generated through the high-temperature melting method is suitable for disposal based on theresults of the hazardous substance removal and solid waste test requirements.