Categorization and selection of regulatory approaches for nuclear power plants

Junko Sugaya, Yuko Harayama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Several new regulatory approaches have been introduced to Japanese nuclear safety regulations, in which a prescriptive and deterministic approach had traditionally predominated. However, the options of regulatory approaches that can possibly be applied to nuclear safety regulations as well as the methodology for selecting the options are not systematically defined. In this study, various regulatory approaches for nuclear power plants are categorized as prescriptive or nonprescriptive, outcome-based or process-based, and deterministic or risk-informed. 18 options of regulatory approaches are conceptually developed and the conditions for selecting the appropriate regulatory approaches are identified. Current issues on nuclear regulations regarding responsibilities, transparency, consensus standards and regulatory inspections are examined from the viewpoints of regulatory approaches to verify usefulness of the categorization and selection concept of regulatory approaches. Finally, some of the challenges at the transitional phase of regulatory approaches are discussed.

Original languageEnglish
Pages (from-to)110-121
Number of pages12
JournalTransactions of the Atomic Energy Society of Japan
Issue number2
Publication statusPublished - 2009 Jun
Externally publishedYes


  • Nonprescriptive
  • Nuclear regulations
  • Regulatory approaches
  • Regulatory oversight
  • Risk-informed, rulemaking

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality


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