Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II

This paper presents an experimental validation of RELAP5 and TRACE5 for licensing studies of the Atucha II-PHWR nuclear power plant. A scaled experimental facility, representing the boron injection system of Atucha II, was built. The system has a fundamental importance for loss of coolant accidents...

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Main Authors: Alejandro I. Lazarte, William Fullmer, Martín Bertodano
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Science and Technology of Nuclear Installations
Online Access:http://dx.doi.org/10.1155/2011/693245
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author Alejandro I. Lazarte
William Fullmer
Martín Bertodano
author_facet Alejandro I. Lazarte
William Fullmer
Martín Bertodano
author_sort Alejandro I. Lazarte
collection DOAJ
description This paper presents an experimental validation of RELAP5 and TRACE5 for licensing studies of the Atucha II-PHWR nuclear power plant. A scaled experimental facility, representing the boron injection system of Atucha II, was built. The system has a fundamental importance for loss of coolant accidents (LOCA) and anticipated transients without scram (ATWS). The experiment consists of the discharge of a tank that represents the boron tank filled with air or a mixture of air-water onto a discharge tank that represents the moderator tank. Both tanks are connected by a pipe which includes a valve and an orifice plate to model the pressure losses due to the fittings in the real system. The pressure and water level measured in the tanks are compared with the RELAP5 and TRACE5 predictions. The codes predict the pressure in the tanks accurately. However, both codes overpredict the heat transfer in the boron tank air-water interface which produces a greater expansion of the air which leads to a small discrepancy in the boron tank level prediction.
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institution OA Journals
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spelling doaj-art-818bd8fac17648c8aa06ee7b6d67d5782025-08-20T02:08:27ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832011-01-01201110.1155/2011/693245693245Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha IIAlejandro I. Lazarte0William Fullmer1Martín Bertodano2Nuclear Regulatory Authority of Argentina, Buenos Aires, C1429BNP, ArgentinaSchool of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USASchool of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USAThis paper presents an experimental validation of RELAP5 and TRACE5 for licensing studies of the Atucha II-PHWR nuclear power plant. A scaled experimental facility, representing the boron injection system of Atucha II, was built. The system has a fundamental importance for loss of coolant accidents (LOCA) and anticipated transients without scram (ATWS). The experiment consists of the discharge of a tank that represents the boron tank filled with air or a mixture of air-water onto a discharge tank that represents the moderator tank. Both tanks are connected by a pipe which includes a valve and an orifice plate to model the pressure losses due to the fittings in the real system. The pressure and water level measured in the tanks are compared with the RELAP5 and TRACE5 predictions. The codes predict the pressure in the tanks accurately. However, both codes overpredict the heat transfer in the boron tank air-water interface which produces a greater expansion of the air which leads to a small discrepancy in the boron tank level prediction.http://dx.doi.org/10.1155/2011/693245
spellingShingle Alejandro I. Lazarte
William Fullmer
Martín Bertodano
Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
Science and Technology of Nuclear Installations
title Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
title_full Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
title_fullStr Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
title_full_unstemmed Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
title_short Experimental Validation of RELAP5 and TRACE5 for Licensing Studies of the Boron Injection System of Atucha II
title_sort experimental validation of relap5 and trace5 for licensing studies of the boron injection system of atucha ii
url http://dx.doi.org/10.1155/2011/693245
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AT williamfullmer experimentalvalidationofrelap5andtrace5forlicensingstudiesoftheboroninjectionsystemofatuchaii
AT martinbertodano experimentalvalidationofrelap5andtrace5forlicensingstudiesoftheboroninjectionsystemofatuchaii