The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors | Zendy

Francesco Saverio D'Auria | Zendy; O. Mazzantini | Zendy

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The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors

Author(s) -

Francesco Saverio D'Auria,

O. Mazzantini

Publication year - 2010

Publication title -

science and technology of nuclear installations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.417

H-Index - 24

eISSN - 1687-6083

pISSN - 1687-6075

DOI - 10.1155/2011/958218

Subject(s) - process (computing) , key (lock) , engineering , nuclear power plant , quality (philosophy) , risk analysis (engineering) , reliability engineering , nuclear power , operations research , computer science , computer security , business , ecology , philosophy , physics , epistemology , nuclear physics , biology , operating system

Within the licensing process of the KWU Atucha II PHWR (Pressurized Heavy Water Reactor), the BEPU (Best Estimate Plus Uncertainty) approach has been selected for issuing of the Chapter 15 on FSAR (Final Safety Analysis Report). The key steps of the entire process are basically two: (a) the selection of PIE (Postulated Initiating Events) and (b) the analysis by best estimate models supported by uncertainty evaluation. Otherwise, key elements of the approach are (1) availability of qualified computational tools including suitable uncertainty method, (2) demonstration of quality, and (3) acceptability and endorsement by the licensing authority. The effort of issuing Chapter 15 is terminated at the time of issuing of the present paper, and the safety margins available for the operation of the concerned NPP (Nuclear Power Plant) have been quantified

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