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

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 selectio...

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Main Authors: Francesco D'Auria, Oscar Mazzantini
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Science and Technology of Nuclear Installations
Online Access:http://dx.doi.org/10.1155/2011/958218
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author Francesco D'Auria
Oscar Mazzantini
author_facet Francesco D'Auria
Oscar Mazzantini
author_sort Francesco D'Auria
collection DOAJ
description 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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spelling doaj-art-ad8ea9e33e554b4eb214670db96adc2f2025-02-03T01:09:24ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832011-01-01201110.1155/2011/958218958218The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present ReactorsFrancesco D'Auria0Oscar Mazzantini1GRNSPG, University of Pisa, L. Lucio Lazzarino 1, 56100 Pisa, ItalyNucleoeléctrica Argentina S.A., UGCNAII, 2806 Lima, ArgentinaWithin 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.http://dx.doi.org/10.1155/2011/958218
spellingShingle Francesco D'Auria
Oscar Mazzantini
The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
Science and Technology of Nuclear Installations
title The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
title_full The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
title_fullStr The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
title_full_unstemmed The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
title_short The Best Estimate Plus Uncertainty Challenge in the Current Licensing Process of Present Reactors
title_sort best estimate plus uncertainty challenge in the current licensing process of present reactors
url http://dx.doi.org/10.1155/2011/958218
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