• Proceedings of the Korean Radioactive Waste Society Conference
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• 2003.11a
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• pp.229-232
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• 2003

A waste container, one of the key compartments in a multi-barrier system for a potential high level radioactive waste (HLW) repository in Korea ensures the mechanical stability against the lithostatic pressure of a deep geologic strata and the swelling pressure of the bentonite buffer. Also, it prohibits potential release of radionuclides for a certain period of time. before it is corroded by impurities. Even though the materials of a waste container is carefully chosen and all manufacturing processes are under heavy quality assurance, there might be a slight chance of intial defects in a waste container. Also, during the deposition of a waste container in a repository, there might be a chance of an incident affecting the integrity of a waste container. In this study, the FEP's and the scenarios over radiological impact of a potential initial waste container defect was developed. Then the total system performance assessment on this initial waste container failure (ICF) scenario was carried out by the MASCOT-K, one of the probabilistic safety assessment tools KAERI has developed. Results show that for the data set studied in this paper, the annual individual dose by the ICF scenario well meets the KINS regulation.

• Tunnel and Underground Space
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• v.14 no.3
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• pp.175-187
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• 2004

고준위방사성폐기물 처분의 경우 심부 암반에 만들어진 처분장에 영구 처분하는 것이 최선의 방안으로 여겨지고 있다. 하지만 지하 심부의 암반에 대한 물리적, 화학적, 역학적, 열적, 수리적 물성과 이들과 핵종 이동의 관계, 처분환경에서의 공학적 방벽 및 암반의 거동이 처분장 안정성 및 안전성에 미치는 영향 등을 파악해야하는 어려움이 따른다. 특히 고준위폐기물 처분의 경우 장기간의 안전성을 고려해야하기 때문에 자연방벽과 공학적 방벽의 시간에 따른 거동변화도 고려하여야 할 필요가 있다. (중략)

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.14 no.3
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• pp.297-305
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• 2016

An approach to assess inadvertent human intrusion into radwaste repository was proposed with the assumption that the intrusion occurs after a loss of knowledge of the hazardous nature of the disposal facility. The essential boundary conditions were derived on the basis of international recommendations, followed by an overall approach to deal with inadvertent human intrusion. The interrelation between societal factors, human intrusion scenarios, and protective measures is described to provide a concrete explanation of the approach, including the detailed procedures to set up the human intrusion scenario. The procedure for deriving protective measures is also explained with four steps, including how to derive a safety framework, general measures, potential measures, and eventual protective measures on the basis of stylized scenarios. It is expected that the approach proposed in this study will be used effectively to reduce the potential for and/or the consequences of human intrusion during the entire process of realizing a disposal facility.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2006.06a
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• pp.66-67
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• 2006

• Nuclear industry
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• v.11 no.10 s.104
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• pp.33-37
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• 1991

• Nuclear industry
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• v.29 no.7
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• pp.21-24
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• 2009

2009년 경주 윌성 지역에 건설 중이던 중 저준위 방사성폐기물 처분장(이하 방폐장) 건설의 완공이 지하 동굴 굴진 공사중 연약 암반이 발견된 것과 관련하여 애초 계획보다 30개월 지연된다고 지식경제부와 방사성폐기물공단이 발표하였다. 경주 주민들은 이에 대해 방폐장 건설의 안전성에 의혹을 제기하면서 진상조사를 할 것을 요구하였고 지경부는 한국지질학회에 의뢰하여 진상조사단을 구성하여 지연 사유를 조사하도록 하였으며 조사 결과 발표회가 개최되었다. 그러나 이에 만족하지 않고 추가 조사 등을 요구하는 지역 주민들의 요구에 의해 '방폐장 현안사항 해결을 위한 지역 공동협의회'가 구성되었으며 이들이 구성한 '방폐장 안전성 검증조사단'이 방폐장 안전성 확인을 위해 현재 조사 활동을 수행하고 있다.

• Nuclear industry
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• v.11 no.10 s.104
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• pp.38-47
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• 1991

• Nuclear industry
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• v.22 no.8 s.234
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• pp.8-14
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• 2002

• Tunnel and Underground Space
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• v.9 no.2
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• pp.102-113
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• 1999

Two-dimensional and three-dimensional DEM programs, UDEC and 3DEC, were used to investigate the mechanical stability of the conceptual design of deposition drift and deposition holes constructed in a crystalline rock mass. From the simulations, the influence of discontinuities, the number of deposition holes, and deposition hole interval on the stability of deposition drift and deposition holes could be determined. From the two-dimensional and three-dimensional analysis. it was concluded that three-dimensional analysis should be carried 7ut fur deriving reliable conclusions. Even though the deposition hole interval changed from 8 m to 3 m, which did not damage the mechanical stability of the deposition drift.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 2001.03a
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• pp.17-39
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• 2001