• Title/Summary/Keyword: 방사선동위원소추진

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Establishment of a Strategy for the Promotion of an Active Participation in the IAEA Program related to Applications of Radioisotopes and Ionizing Radiation (방사선동위원소.방사선 응용을 위한 IAEA 프로그램의 참여 제고 방안)

  • Kim, Kyeong-Pyo;Lee, Jun-S.;Jung, Sung-Hee
    • Journal of radiological science and technology
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    • v.28 no.2
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    • pp.79-89
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    • 2005
  • This paper presents the overall attributes of the current IAEA programs and their future prospects in the arena of applications of radioisotopes and ionizing radiation, thus dealing with the demand to achieve a condensed understanding of the Agency's programs for an effective and efficient deployment of the respective national R&D projects in Korea. The considerable and beneficial advantages of a participation in the IAEA programs have been reviewed and their immediate relevance has been emphasized. A strategic approach for the enhancement of an active participation in the program and its efficient implementation has also been established. It is anticipated that the proposed recommendations such as the long term strategy and the applicable guidelines will be useful in formulating a nuclear policy for the further development of the international cooperative projects in the future.

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Attributes and Elements of the AMBIDEXTER Nuclear Energy System Design Concept (AMBIDEXTER 원자력 에너지시스템 설계개념)

  • 오세기;정근모
    • Journal of Energy Engineering
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    • v.8 no.1
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    • pp.59-66
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    • 1999
  • 원자력발전의 고유한 문제점을 해결할 수 있는 새로운 집적폐회로형 AMBIDEXTER 원자력시스템 개념을 제안하였다. 이 복합시스템은 일체형 원자로를 중심으로 열/에너지 변환회로와 방사선/물질 수송회로를 서로 독립적으로 구성하므로 최소 방사선 위험부담 아래서 원자력에너지의 잇점을 극대화하는 설계이다. 특히 방사선/물질 수송회로로부터 분리된 고준위 방사성 폐기물에서 고부가가치 동위원소나 방사선원을 선별적으로 용이하게 추출, 활용할 수 있다. 원자로 계통은 얇고 큰 Hastelloy 합금 원자로용기 내부를 노심, 침니, 열교환기, 다운캄어 및 입구플레넘 콤파트먼트로 분할하여 배관이나 벨브관이 없으므로 기기파손으로 인한 방사성물질의 대량 외부 누출은 불가능하다. Th/233U 용융염핵연료의 핵물리 및 열수력학적 특성을 살려 AMBIDEXTER 노심의 핵적 자활성 설계에 융통성을 부여하는 변성핵연료주기를 도입하면 핵연료자원의 공급 안정화나 핵확산방지의 투명성 제고에 큰 효과가 있다. AMBIDEXTER 설계연구에 관련된 핵심기술들은 일찍이 미국 ORNL에서 시작한 MSR 프로그램을 통해 개발되어 이미 대부분 상용화하고 있기 때문에 현재 추진 중인 250 MWth급 원형로 모듈의 개념개발에서는 주로 시스템 통합에 관한 문제들이 중점적으로 다루어진다.

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State of the Art for Space Propulsion Employing Nuclear Power (핵동력 우주추진 기술개발 동향)

  • Hong Yeong Park;Yun Hyeong Kang;Jeong Soo Kim;Soo Seok Yang
    • Journal of the Korean Society of Propulsion Engineers
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    • v.26 no.6
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    • pp.86-100
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    • 2022
  • In this paper, the concept and characteristics of the nuclear propulsion system were introduced and the state of the art for the nuclear-powered space propulsion in abroad were summarized. Since uranium used in nuclear propulsion has a very high energy density per unit mass, it has exceptional specific impulse performance compared to the existing chemical propulsion method and can reduce the amount of fuel loaded, thereby having advantage for long-distance exploration. For this reason, advanced countries in space development are recently spurring to the research of nuclear propulsion technology, and it is judged that the development of a propulsion engine using nuclear power is absolutely necessary in order to gain an competitive edge on the space development.