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Kafe 바로가기주관연구기관 | 한국원자력연구원 Korea Atomic Energy Research Institute |
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보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 | 한국어 |
발행년월 | 2009-07 |
주관부처 | 지식경제부 Ministry of Knowledge Economy |
과제관리전문기관 | 지식경제부 Ministry of Knowledge Economy |
등록번호 | TRKO201600013418 |
DB 구축일자 | 2016-12-17 |
키워드 | 사용후핵연료.중간저장.수송.처리.처분.고속로.재활용.핵연료주기정책.후행핵연료주기정책.Spent fuel.Interim storage.Transportation.Treatment.HWL disposal.SFR.Recycling.Nuclear fuel cycle policy.Spent-fuel.management policy. |
Ⅲ.사업결과
본 연구는 향후 사용후핵연료 관리정책결정을 위한 공론화과정에서 그 기술적 자료를 제공할 목적으로 수행되었음.후행핵연료주기 정책 및 기술개발에 대한 국내외의 현황을 심층분석하였으며, 우리나라에 도입 가능한 후행핵연료주기 시나리오를 선정하고 각 시나리오에 대한 평형주기 물량산출 및 기술성분석을 수행하였음. 또한, 향후 정책결정을 위한 방안도 제시하였음.
Ⅲ.Results
(1) The status of the global back-end nuclear fuel cycle policy and the prospective modifications to this policy
○ Since the operation of Kori unit 1 started in 1978, the national capacity of nuclear power plants has dramatically increased. Currently, there are twenty unitsin ope
Ⅲ.Results
(1) The status of the global back-end nuclear fuel cycle policy and the prospective modifications to this policy
○ Since the operation of Kori unit 1 started in 1978, the national capacity of nuclear power plants has dramatically increased. Currently, there are twenty unitsin operation, and nuclear power accounts for approximately 35% of the generated national electricity. These trends of increasing nuclear-power capacity are expected to continue because of global warming and high oil prices. In particular, the national government announced the “National Energy Basic Plan” on August 27th, 2008, in which the fractionof national electricity generated by nuclear power is increased by a large amount. Consequently, spent-fuel accumulation isexpected to continuously increase, and hence, thes pent-fuel management problem needs to beresolved.
○ An analysis of the spent-fuel management policy of major countries showed thats pent-fuel management policies tend to be decided according to the specific conditions in the country. For example, Japan and France, where there is a lack of natural resources, adopted the recycling policy, while countries with a small number of nuclear power plants, such as Belgium and Switzerland who do not reach the scale of economy, adopted the direct disposal option.
○ An analysis of the international environment for the implementation of the back-end nuclear fuel cycle policy showed that international regime of nonproliferation such as assurance of fuel supply has been enhanced. This is due to the proliferation concern regarding the global expansion of sensitive facilities such as enrichment and reprocessing plants.
○ It is expected that the new US administration might change the existing nuclear policy followed by Bush. While presenting his party's stance during the presidential campaign in 2008,Mr. Obama supported restrictively the use of the nuclear energy. Such a change in US policy may affect the nuclear policy of other countries.
(2) The state-of-the-art of the back-end nuclear fuel cycle technology
○ The use of technology to safely transfer spent fuel has been demonstrated worldwide, and in particular, experience in transportation by rail and ship has been gained. However, Korea has experience only in transportation between inter-plants within the site. For spent-fuel storage, many countries with reprocessing facilities prefer wet-type storage, while other countries prefer dry-type storage.
○ An analysis of the status of the development of spent-fuel treatment technology indicates that newly advanced treatment technology for enhancing proliferation resistance and economics is being developed. In particular, major countries with large nuclear power plants are focusing on the technological developments for burning long-lived and highly toxic radioisotopes in a fast reactor in order to maximize the uranium utilization and minimize the environmental effects.
○ Regarding the disposal technology for high-level waste necessary for all countries producing nuclear power, all the disposal methods currently under development involve the use of deep geological repositories. It is expected that the first-high level waste repository might start operating at the beginning of 2020. Large countries with many nuclear power plants, such as the US, have been debating whether they need multi-repositories for the accommodation of all types of spent fuel.
(3) The determination and analysis of the scenarios for the back-end nuclear fuel cycle
○ In this study, a total of eleven plausible nuclear fuel cycles for Korea were determined taking into consideration the current status of domestic R&D as well as the international environment in the region around Korea. Further, the material flow under steady state conditions was determined and analyzed quantitatively to establish the pros and cons of each scenario.
- Direct disposal: Direct disposal, long-term storage, international management
- Domestic wet reprocessing: Domestic wet reprocessing and thermal recycling, domestic wet reprocessing and fast recycling
- Domestic dry reprocessing: AIROX, DUPIC, pyro-SFR fuel cycle
- Foreign wet reprocessing: Foreign wet reprocessing and thermal recycling, Foreign wet reprocessing without domestic recycling, Foreign wet reprocessing
○ For the direct disposal option in which PWR and CANDU spent fuel are stored at the interim storage facility and, finally, permanently disposed in a repository, most of the technology is commercialized, and this option has some benefits in terms of international acceptance.
○ The international management of domestic spent fuel does not involve interim storage in Korea, but it is expected to pay much money due to the international transportation of spent fuel.
○ It is difficult to implement the domestic wet reprocessing and recycling option in Korea since the wet reprocessing might raise international proliferation concerns.
○ If spent fuel must be treated in Korea, adopting the dry process with high proliferation resistance would be a realistic approach. In particular, it is indicated that pyroprocessing and recycling in the SFR have some benefits in terms of environmental effects. However, the demonstration of the use of the technology as well as large-scale investment for the development of the technology should be required.
(4) The approach to policy making for the back-end nuclear fuel cycle in Korea
○ On the basis of the analysis of the approach to policy making for spent-fuel management, it is proposed that a public discussion involving the participation of various people from various fields is required, and simultaneously, technical data on the plausible spent-fuel management options for Korea must be collected by the experts and provided periodically to the public discussion group.
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