Protective systems: Definitions and terms in the regulated risk assessment settingéi

Ha Bui, Tatsuya Sakurahara, Justin Pence, Zi Hui Gu, Zahra Mohaghegh, Seyed Reihani, Martin Wortman, Ernie Kee, Vera Moiseytseva, David Johnson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports on the initial results of ongoing multidisciplinary research to generate a common language for protective system risk analysis. Although established for risk analysis in the commercial nuclear power industry, these definitions can be generalized and used in other regulated profit-making enterprises. As collaborators in large-scale industry-academia-regulatory Probabilistic Risk Assessment (PRA) projects, the authors have found that misunderstanding the terms used in communication between the industry and regulator can reduce efficiency. For example, if the industry practitioner believes "deterministic analysis" is unrelated to PRA, product rework may be indicated. A review of academic literature and the Nuclear Regulatory Commission's (NRC's) website shows that some "definitions" have been assigned, through, for example, a glossary developed for general use. When agreed upon among industry and regulatory investigators, more precise definitions for several common terms such as; Risk, Risk-Informed, Probabilistic Risk Assessment, Prescriptive, Deterministic, Conservative, Risk-Based, Performance Based, and Uncertainty would be helpful in a setting of commercial nuclear power protective systems under regulation. The suggested definitions are based on the authors' information extraction and interpretations from diverse references, or based on industry expert experience. The authors will continue this research to expand the scope of these terms and to seek feedback from industry, aca-demia, and regulatory agencies, hoping to create a consensus among them. Defining these terminologies is important for efficient implementation of risk assessment information relevant to protective systems used in regulated for-profit enterprise.

Original languageEnglish (US)
Title of host publicationInternational Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017
PublisherAmerican Nuclear Society
Pages1101-1110
Number of pages10
ISBN (Electronic)9781510851801
StatePublished - Jan 1 2017
Event2017 International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017 - Pittsburgh, United States
Duration: Sep 24 2017Sep 28 2017

Publication series

NameInternational Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017
Volume2

Other

Other2017 International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017
CountryUnited States
CityPittsburgh
Period9/24/179/28/17

Keywords

  • Catastrophic failure
  • Conservative
  • Design basis
  • Deterministic
  • Nuclear promise
  • Performance based
  • Prescriptive
  • Probabilistic risk assessment
  • Risk-informed
  • Uncertainty

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Statistics, Probability and Uncertainty
  • Statistics and Probability
  • Nuclear Energy and Engineering

Fingerprint Dive into the research topics of 'Protective systems: Definitions and terms in the regulated risk assessment setting<sup>éi</sup>'. Together they form a unique fingerprint.

Cite this