• 제목/요약/키워드: Radioactive release

검색결과 204건 처리시간 0.027초

고리1호기 해체시 발생할 방사성금속폐기물 관리 옵션 연구 (Options Manageing for Radioactive Metallic Waste From the Decommissioning of Kori Unit 1)

  • 데이빗 케슬;김창락
    • 방사성폐기물학회지
    • /
    • 제15권2호
    • /
    • pp.181-189
    • /
    • 2017
  • 방사성금속폐기물의 관리 옵션들을 안전성, 경제성, 작업자 피폭, 부피 감용 등의 선별 기준을 적용하여 비교 평가하였다. 원전 해체로부터 발생하는 금속폐기물의 관리 옵션에는 무구속 방출, 제한적 재사용, 그리고 직접 처분이 있다. 고려된 각각의 옵션들은 금속폐기물의 절단과 용융에 의한 부피감용을 수반한다. AHP기법을 적용하여 각 옵션들의 순위를 부여하였다. 방사성금속폐기물을 용융하여 금속 잉곳을 제조한 후 제한적 재이용 또는 무구속 방출하는 방안이 가장 효율적인 옵션으로 도출되었다.

해외원전 비계획적 방출 및 한국의 환경감시 현황 분석 (Review of Unplanned Release at Foreign Nuclear Power Plants and Radiological Monitoring at Korean Power Plants)

  • 박수찬;함박눈;권장순;조동건;정지혜;권만재
    • 한국지하수토양환경학회지:지하수토양환경
    • /
    • 제23권4호
    • /
    • pp.1-15
    • /
    • 2018
  • Despite of safety issues related to radiological hazards, 31 countries around the world are operating more than 450 nuclear power plants (NPPs). To operate NPPs safely, safety regulations from radiation protection organizations were developed and adopted in many countries. However, many cases of radionuclide releases at foreign NPPs have been reported. Almost all commercial NPPs routinely release radioactive materials to the surrounding environments as liquid and gas phases under control. These releases are called 'planned releases' which are planned, regularly monitored, and well documented. Meanwhile, the releases focused in this review, called 'unplanned releases', are neither planned nor monitored by regulatory and/or protection organizations. NPPs are generally composed of various structures, systems and components (SSCs) for safety. Among them, the SSCs near reactors are closely related to safety of NPPs, and typically fabricated to comply with stringent requirements. However, some non-safety related SSCs such as underground pipes may be constructed only according to commercial standards, causing the leakage of radioactive fluids usually containing tritium ($^3H$). This paper discusses SSCs of NPPs and introduces several cases of unplanned releases at foreign NPPs. The current regulation on the environmental radiological surveillance and assessment around the NPPs in South Korea are also examined.