• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.824-827
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• 2008

Currently, major interested thing at home and abroad is to pursuit a sustaining development of an environmental construction industry through low discharge of carbon dioxide and reuse of construction waste and so on. In order to achieve those goals, we must develop the design technique which can reduce a generated amount of C&D waste from a design phase and technique which can reduce and recycle C&D waste generated at a demolition phase. But a domestic policy for the development and the support of a demolition industry is analyzed to be more insufficient than other advanced country. Therefore, this study analyzed a demolition market trend of foreign country and assessed properties of a domestic demolition industry. Also this study forecasted a scale of a demolition market and analyzed its trend based on total number of housing construction per year. Consequently, this study suggested the development direction of a demolition industry through those analyzed results, expecting the research results to be a fundamental data for the development of demolition industry and the policy of construction waste.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2005.06a
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• pp.40-48
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• 2005

The licensees are to submit the decommissioning plan to regulatory body to decommission nuclear facilities. The standard review plan(SRP) of decommissioning is used to confirm and evaluate the decommissioning plan by the related regulations and standards. The licensees who want to decommission the nuclear facilities are required to submit the decommissioning plan according to Acts 31 of Atomic Energy Law. In this study, the items of reports and documents submitting to regulatory body were reviewed deliberately, and finally the major sub-items of decommissioning plan were established.

• Construction Engineering and Management
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• v.13 no.6
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• pp.36-40
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• 2012

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.13 no.3
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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 Radiation Protection and Research
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• v.38 no.2
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• pp.91-99
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• 2013

There are many reasons for decommissioning of cyclotron such as not only age-related deficiency, any serious wear or damage but also relocation, upgrade and changing mission. Decommission of cyclotron in USA and EU give rise to a lot of low-level radioactive waste and costs. Various research on decommissioning of particle accelerator have been carried to reduce the cost of decommissioning in USA and EU. In USA, the NRC require DFP (Decommissioning Funding Plan) to authorized licenser by 10 CFR Part 30.35. To resolve radioactive waste problem and reduce the estimated cost of cyclotron decommissioning, we should consider technical aspects (decommissioning procedures, decontamination techniques, etc.) and safety aspects(residual radioactivity, the expected dose, etc) for decommissioning. In this study, we analyzed practical information on the decommissioning of cyclotron in ANL (Argonne National Laboratory) and Belgium (EU). And we investigated the experience on the cyclotron relocation from SNUH (Seoul National University Hospital) to SKKU (Sungkyunkwan University). From these results, we provide the basic data for establishing of relevant standards on domestic cyclotron decommissioning. It is necessary to adopt the DFP for safe and economic decommissioning and waste recycling. These result could be utilized for the establishment on the standards and useful requirements.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.6297-6304
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• 2015

Nuclear power plant decommissioning has attracted attention according to the shutdown decision of Kori 1 which is Korea's first nuclear power plant. Nuclear power plant decommissioning is the one who never experienced ever in our country. So, its process is difficult and time-consuming. In addition, it is difficult to determine the decommissioning quantity. This study proposed the plan that can be used in quantity take-off for nuclear power plant decommissioning using BIM technology being utilized in recent construction industry. As a result, we suggested the method of BIM-based quantity take-off such as the selection decommissioning method and process, setting up of BIM modeling environment, establishment of OBS & WBS, integrated BIM modeling, the definition of quantity property. The proposed plan can be utilized usefully from when permanent stopping nuclear power plant occurs intensively. Furthermore, the overseas nuclear power plant decommissioning project order also are expected through technology securement based on this plan.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.12 no.2
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• pp.171-178
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• 2014

After the expiration of operating license of a plant, all infrastructures within the plant must be safely dismantled to the point that it no longer requires measures for radiation protection. Despite the fact that Kori 1 and Wolsong 1 are close to the expiration of their operating license, sufficient technologies for radiological characterization, decontamination and dismantling is still under development. The purpose of this study is to develop one of methods for radiological inventory assessment on measuring object by using direct measure of large component with In-Situ measurement technique. Radiological inventory was assessed by analyzing nuclide using portable gamma spectroscopy without dismantling reactor head, and the result of direct measurement was supplemented by performing indirect measurement. Radiochemical analysis were performed on surface contamination samples as well. During the study, radiological inventory of reactor vessel calculated expanding the result. Based on the result and the radioactivity variation of each radionuclides time frame for decommissioning can be decided. Thus, it is expected that during the decommissioning of plants, the result of this study will contribute to the reduction of radiation exposure to workers.

• Journal of Adhesion and Interface
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• v.22 no.2
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• pp.69-77
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• 2021

A variety of efforts are attempted to make the world sustainable in fabrication industries worldwide. To achieve the goals, a new design concept for products is one of crucial factors to be able to dismantle them after use in easy and simple ways. New debonding technologies have been developed in recent years for the recycle and/or repair of bonded structures, where the bonds are broken without the damage of the components and make recycling easier. Some representative technologies of controlled delamination materials (CDM) are reviewed with an emphasis on light induced debonding of adhesives. We also describe current applications of light induced CDMs as temporary bondable films in semiconductor and display industries.

• Resources Recycling
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• v.23 no.2
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• pp.71-80
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• 2014

In order to survey the numerical achievement of ELV recycling rate 95%, the definition of ELV recycling rate, material components of the automobile, improvement of ELV dismantling technology and status of ASR recycling were reviewed. On the other hand, field survey in details for dismantling works were conducted at Incheon Junkyard and H Junkyard. Although material recycling rate has been approaching 94% in dismantling step, status of ASR recycling is very unstable due to a ban of ASR recycling at cement kiln. It is clear that ASR recycling acts as a bottle neck in the ELV recycling. Therefore, it is important energy recycling of ASR should be enlarged to achieve ELV recycling rate 95%.

• Nuclear industry
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• v.36 no.7
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• pp.63-67
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• 2016

프랑스는 원자력시설의 해체 과정에서 발생되는 방사성폐기물의 양을 최대한 줄이면서 그에 따른 비용과 작업자의 방사선 피폭을 최대한 줄일 수 있는 혁신적인 기술을 개발하고 있다. 이를 6개 분야로 나누어 소개한다.