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Descripción
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| The Energy Systems Department of Universidad Politecnica de Madrid has developed a model of Almaraz NPP, Westinghouse three loops PWR design, for TRACE code in the framework of several projects sponsored by the Spanish Nuclear Regulatory Commission (CSN) and the Electric Energy Industry of Spain (UNESA). At present, a full power and a shutdown model are applied for sequences analysis. The model has been adjusted at several power rates and steady state results show good agreement with plant data. In order to check the whole model, a wide spectrum of transient simulations were performed, observing a good behavior. For partial fulfilment of the bilateral - agreement for cooperation in thermalhydraulic activities between the Consejo de Seguridad Nuclear of Spain (CSN) and the United States Nuclear Regulatory Commission (US-NRC), the simulation of single RCP trip transient that took place in Almaraz NPP on May 13 (2002) has been performed, comparing the results obtained with plant data. The data comparison was quite encouraging when TRACE version 4.160 is used. However, the results obtained using TRACE 5.0 were not satisfactory. Wrong predictions were obtained for the steam flow through the Steam Dump valves during the transient. Regardless of this problem, the work made allowed performing the first validation transient with the plant model. The simulations have been run in a Pentium IV 3.4 MHz under Windows XP and AMD Opteron Dual Core Processors 180 & 1222 under Debian Linux, both with 32 and 64 bits executables. This work has been sponsored by UNESA and Almaraz-Trillo AIE. | |
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Internacional
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Si |
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Entidad Informe
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United States Nuclear Regulatory Commission |
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Nacionalidad Entidad
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E.E.U.U. DE AMERICA |