MURRG, 다수기 PSA 규제검증 기술개발 사업단

Korean Institue of Nuclear Safety

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2018 Research Methods

Research Goals and Details
  • Feasibility study of Site Risk Safety index

    Review the status of site risk safety index

    Review options for developing site risk safety index

  • Key data collection and analysis related to site risk assessment

    Analysis of the multi-unit effect due to the dependency of shared component

  • Establishment of an analysis system for deterministic off-site impact assessment
    caused by multi-unit simultaneous accidents

Research Results

  • Feasibility study of Site Risk Safety index

    Review of the regulatory requirements and risk metrics related to site risk for safety index

Review List
ASME/ANS PRA Standards
IAEA TD-1804
Canada : CSA PSA Standard : N290.17-17, Probabilistic safety assessment for nuclear power plants
U.K : SAP Numerical targets
U.S : Safety Goal Statement
U.S : NUREG-0880 Rev1, Safety Goals for Nuclear Power Plant Operation
U.S : Scoping Analysis
Canada : Site risk assessment results for Pickering
COG : Study for Site safety Goal
  • Research achievement

    Germany, WGRISK Site level risk Meeting “Current Status of Multi-Unit Regulation in Korea”(‘18.07) etc.
  • Key data collection and analysis related to site risk assessment

    Analysis of the multi-unit simultaneous accident effect due to dependency between
    site-shared facilities and dependency between shared facilities and interconnected systems

    Application of developed inter-unit dependency evaluation logic for target site
  • Research achievement

    USA, PSAM 14 “A Study for Identifying Multi-Unit Initiating Event and Estimating Frequency “ (’18.9)
  • Establishment of an analysis system for deterministic off-site impact assessment
    caused by multi-unit simultaneous accidents

    Uncertainty analysis of key factors about released source term for off-site impact analysis

  • Perform preliminary dose assessment considering simultaneous accident of two OPR100 or APR1400 units

  • Research achievement

    China, ASRAM 2018 “'Multi-unit Offsite Consequence Analysis for Korean NPPs using WinMACCS” (’18.10)

Expectation effectiveness

  • By using safety index, regulatory standards, and guidelines related to site risk developed through this research project,
    it is possible to secure safety against simultaneous multi-unit accident

  • In addition, site risk safety index, regulatory standards and guidelines provide licensee with clear regulatory backgrounds
    related to site risk, thereby inducing licensee to construct and operate safer NPPs.

Researcher profile

  • Research director
research director
Basic Information
NameKim Dohyoung
DepartmentSevere Accident & Risk Assessment
E-mailk643kdh@kins.re.kr
Tel.042-868-0776
Education
Year School Major Degree
1990-1994 SNU Nuclear Engineering Bachelor
1994-1997 SNU Nuclear Engineering Master
1999-2003 MIT Nuclear Engineering Doctor
  • Participating Researchers

    15 researchers including PSA, Severe Accident Assessment, international cooperation, safety policy

  • 9 principle researchers & 6 senior researchers