• Title/Summary/Keyword: Nuclear Safety Regulation

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THE IMPROVEMENT OF NUCLEAR SAFETY REGULATION: AMERICAN, EUROPEAN, JAPANESE, AND SOUTH KOREAN EXPERIENCES

  • CHO BYUNG-SUN
    • Nuclear Engineering and Technology
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    • v.37 no.3
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    • pp.273-278
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    • 2005
  • Key concepts in South Korean nuclear safety regulation are safety and risk. Nuclear regulation in South Korea has required reactor designs and safeguards that reduce the risk of a major accident to less than one in a million reactor-years-a risk supposedly low enough to be acceptable. To date, in South Korean nuclear safety regulation has involved the establishment of many technical standards to enable administration enforcement. In scientific lawsuits in which the legal issue is the validity of specialized technical standards that are used for judge whether a particular nuclear power plant is to be licensed, the concept of uncertainty law is often raised with regard to what extent the examination and judgment by the judicial power affects a discretion made by the administrative office. In other words, the safety standards for nuclear power plants has been adapted as a form of the scientific technical standards widely under the idea of uncertainty law. Thus, the improvement of nuclear safety regulation in South Korea seems to depend on the rational lawmaking and a reasonable, judicial examination of the scientific standards on nuclear safety.

TECHNOLOGY-NEUTRAL NUCLEAR POWER PLANT REGULATION: IMPLICATIONS OF A SAFETY GOALS- DRIVEN PERFORMANCE-BASED REGULATION

  • MODARRES MOHAMMAD
    • Nuclear Engineering and Technology
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    • v.37 no.3
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    • pp.221-230
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    • 2005
  • This paper reviews the pivotal phases of the evolution of the current technology-dependent nuclear power safety regulation in the United States. Understanding of this evolution is essential to the development of any future regulatory paradigm, including the technology-neutral regulatory approach that the U.S. Nuclear Regulatory Commission (NRC) has recently embarked on to develop. The paper proposes and examines the implications of a predominately rationalist and best-estimate probabilistic regulatory framework called safety goals-driven performance-based regulation. This framework relies on continuous assessment of performance of a set of time-dependent safety-critical systems, structures and components that assure attainment of a broad set of technology-neutral protective, mitigative, and preventive goals. Finally, the paper discusses the steps needed to develop a corresponding technology-neutral regulatory system from the proposed framework.

A Study on Improvement of the Interface Control of NPP Construction and Operation Activities

  • Chung, Ku-Young;Lee, Woo-Ho;Lee, Jae-Hun
    • Proceedings of the Korean Nuclear Society Conference
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    • 2005.05a
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    • pp.1221-1222
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    • 2005
  • Interface control activities during the nuclear power plant (NPP) construction and operation have been reviewed for enhancing the safety of NPP. The primary focus of the study is given on analysis of lessons learned from the recent significant events of Korean Standard Nuclear Power plant (KSNP), such as a series of break-off of thermal sleeves at YGN 5 & 6 and radioactivity leak at YGN 5, in respect of interface control. Based on the results of the analysis, this study recommends measures for the improvement of interface control among utility and technical supporting organizations (TSO), and suggests new regulatory systems, such as reporting of safety significant non-conformances, to effectively verify the adequacy of interface control activities during construction and operation of NPPs.

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NUCLEAR REGULATORY RESEARCH IN KOREA: ACHIEVEMENTS AND FUTURE DIRECTION

  • Ryu, Yong-Ho
    • Nuclear Engineering and Technology
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    • v.41 no.4
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    • pp.403-412
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    • 2009
  • For efficient and effective nuclear regulation, regulatory organizations must establish consistent and rigorous regulatory positions on safety matters. These positions should be based on high technical expertise and relevant ordinances, standards, and guidelines reflecting policy changes governing nuclear regulations. The Korea Institute of Nuclear Safety, a regulatory expert organization in Korea, has developed regulatory requirements, guidelines and analytical tools that provide regulatory technical bases for ensuring nuclear safety. The nuclear regulatory research also contributes to regulatory decision making by providing resolution for current and future safety issues. In this article, we introduce nuclear regulatory research and its main achievements in the past 10 years. Also, suggested here are future directions of nuclear regulatory research.

System Dynamic Model Study of Public Trust on Nuclear Regulation Policy (원자력 규제정책에 대한 국민신뢰도 평가 SD모델 연구)

  • Kwak, Mi-Aie;Cha, Hyun-Ju;Kim, Sung-Hyun;Jung, Kwan-Yong
    • Korean System Dynamics Review
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    • v.16 no.1
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    • pp.53-74
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    • 2015
  • The purpose of this paper is to simulate public trust on nuclear regulation policy. The first of all, public trust variables and the model were developed and analysed by system dynamic method. The model are consisted of the operator safety culture level, regulatory competence levels, the public satisfaction and public trust level. The scenario is made up three type which base scenario, the system operator's safety culture level and accident event level. First. the simulation results of standard scenario shows that rapidly declining public satisfaction and trust level of the national safety after Japan's nuclear accident in November 2011. Second, operator safety culture level and simulated divided into three levels. The results showed that a greater impact on the public satisfaction if bad than good case. Finally, the size of the accident was simulated divided into three levels levels(no accident, medium, serious accidents). the results showed a weak effect against the regulatory capacity and safety performance levels but showed a significant impact on public satisfaction and confidence level.