• Proceedings of the KSME Conference
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• 대한기계학회 2005년도 창립60주년 기념 추계 학술대회
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• pp.226.2-226.2
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• 2005

• Proceedings of the Korean Radioactive Waste Society Conference
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• 한국방사성폐기물학회 2003년도 가을 학술논문집
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• pp.681-686
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• 2003

It has been designed GUI(graphic user interface) to consult the convenience of a input data and the flexibility that can be retrieved dismantling information relation to decommissioning DB of KRR1&2. The GUI can proceed an input materials and a search and output of a saved data in server based on a facility code and also have a function of explorer which can find the lower dismantling objects in each facilities. It has added the structure of the multimedia that could be showed a series of dismantling activities with a Mpeg and pictures into the GUI. In the future work, Decommissioning DB and User Interface are intend to contribute a functions that could be evaluate and analyze for a dismantling activities with a engineering theory.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• 제13권3호
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• pp.187-199
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• 2015

Decontamination is one of the crucial technologies that are applied during the decommissioning process of nuclear facilities to secure the safety of workers and to minimize the quantity of radioactive waste. Decontamination removes radionuclides on the surface of contaminated metal. Compared with decontamination for operational nuclear facilities, decontamination for nuclear power plants that are being decommissioned needs to remove the more and thicker surface using more aggressive agents or specially developed equipment. This paper analyzed the factors to be considered before planning the decontamination, representative decontamination technologies, and their application procedure,etc. ORCID

• Journal of the Korean Society of Environmental Restoration Technology
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• 제6권2호
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• pp.48-56
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• 2003

20세기 후반을 거치며 환경 관련 이슈는 조경 이론과 설계에서도 중심 주제로 자리잡아 왔다. 환경에 대한 고려를 중심에 둔 이른바 생태적 조경계획 설계는 조경의 패러다임에 일대 전환을 가져오고 조경의 대사회적 역할을 교정했다는 평가를 받고 있다. 그러나 이러한 흐름은 동시대 조경 이론과 설계의 가장 첨예한 쟁점 중의 하나인 생태학과 예술 사이의 이분법을 심화시켰다는 비판에 직면하고 있는 것 또한 사실이다. 즉 생태적 조경은 환경적 가치 대형태 구축, 부지의 생태적 분석 대 창조적 표현이라는 이원론적 갈등 관계를 형성해 온 것이다. 이 논문은 이러한 양상의 생태-예술 이원론을 해체하고 대안적 조경의 지평을 구축하는 일이 현대 조경설계가 풀어야 할 최우선의 과제라고 파악한다. 이 논문은 특히 최근의 조경설계에서 실험되고 있는 경험의 구축, 변화와 프로세스의 고려, 일시성과 불확정성을 존중하는 태도 등을 통해 생태-예술 이원론을 해체할 수 있는 실천적 전략을 모색한다. 뿐만 아니라 그러한 전략에서 드러나는 대안적 조경미학이 최근의 환경미학과 공유하고 있는 이론적 지형을 검토함으로써 생태학과 예술의 접점을 가로지르는 조경설계의 새로운 좌표를 탐색한다.

• Fire Science and Engineering
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• 제34권3호
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• pp.134-140
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• 2020

Nuclear power plants (NPPs) in Korea are required to be maintained using a defense in-depth approach to prevent leakage of radioactive substances outside the plant and allow safe shutdown in the event of a fire. Periodic testing must be conducted to ensure that the fire protection facilities perform as required by the laws for various nuclear reactor types. In June 2017, for the first time in Korea, a nuclear plant, Kori Unit 1, was permanently shut down. It was prepared for decommissioning in accordance with the fire protection regulations imposed by the regulatory body. However, a standard protocol is necessary for systematically establishing the fire protection program for decommissioning of NPPs in the future. Therefore, the nuclear legal systems of countries with many operating nuclear power plants, such as the United States, Japan, Canada, and various European countries, were reviewed and guidelines for establishing a fire protection program for decommissioning NPPs was suggested; the fire protection requirements stated by Reg Guide 1.191 (Decommissioning fire protection program for NPPs during decommissioning and permanent shutdown) were used as a model. Suggestions for establishing legal regulations to optimize fire protection programs and secure basic technology for decommissioning NPPs were also made.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.814-817
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• 2005

Today recycling has been one of the most important Issues In industry as it is required to save the limited amount of natural resources and to keep the environment green. In spite of many efforts to increase recycling rate in industry, however, the practical solutions are very limited. The difficulties are caused by the existence of many parts made of diverse materials and their inevitably complicated assembly structures to satisfy different needs. This paper represents a study on the disassembly sequence generator system for parts recycling. With disassembly costs and revenues, the optimum disassembly sequence can be found with a linear programming.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 한국방사성폐기물학회 2015년도 추계학술논문요약집
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• pp.297-298
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• 2015

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• 제14권2호
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• pp.157-168
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• 2016

Radioactive waste container designs should comply with the requirements for safety (i.e., transportation, storage, disposal) and other criteria such as economics and technology. These criteria are also applicable to the future management of the large amount of LLW and VLLW to arise from decontamination and decommissioning (D&D) of nuclear power plants, which have different features compared to that of wastes from operation and maintenance (O&M). This paper proposes to develop a set of standard containers of multi-purpose usage for transportation, storage and disposal. The concepts of the containers were optimized for management of D&D wastes in consideration of national system for radioactive waste management, in particular the Gyeongju Repository and associated infrastructures. A set of prototype containers were designed and built : a soft bag for VLLW, two metallic containers for VLLW/LLW (a standard IP2 container for sea transport and ISO container for road transport). Safety analyses by simulation and tests of these designs show they are in compliance with the regulatory requirements. A further development of a container with concrete is foreseen for 2016.

• Land and Housing Review
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• 제2권2호
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• pp.195-204
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• 2011

During mechanical demolition of RC structures, weights of dismantling equipment and demolition waste of building are applied to unexpected load which did not be considered during the design of structural member. Nevertheless, the loading of dismantling equipment and dismantling process are mainly dependent on field managers' field workers' or experiences without considering safety of structural member by a structural engineer. It is urgently required that reflecting actual circumstance of mechanical demolition, safety evaluation method to evaluate the safety and the guideline for appropriate capacity of structural member to support dismantling equipment weight, be provided. Through site investigation and questionnaire on field workers, this paper proposed demolition waste load, load factor, strength reduction factor, and so on. These are essential to safe evaluation of a building, ready to demolition. Considering actual circumstance of mechanical demolition, safety evaluation method of building and design method of slab and beam was suggested to a dilapidated building. An capability to loading of dismantling equipment was proposed, applied to RC slab and RC beam. Therefore, the suggested safety evaluation method and the guideline for an capability to loading of dismantling equipment weight can reasonably evaluate the capacity of structural member in demolition and use effectively as increasing efficiency and improving safety of demolition through proper management of dismantling equipments.

• Explosives and Blasting
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• 제26권1호
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• pp.7-14
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• 2008

In order to complete successfully the demolition of a silo structure by means of felling method, structural properties and the geometric design of blast mouth have to be considered. In this study, a commercial software, 3-dimensional applied element analysis (3D AEM), was used to investigate the effect of the geometrical parameters of blast mouth on the collapse behavior of the silo structure.