United States Nuclear Regulatory Commission - Protecting People and the Environment

Assessment of Single Recirculation Pump Trip Transient in Santa Maria de Garona Nuclear Power Plant With TRAC-BF1/MOD1, Version 0.4 (NUREG/IA-0193)

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Publication Information

Date Published: January 2001

Prepared by:
C. García de la Rúa, J. García García, J.V. López Montero

NUCLENOR, S.A.
C/ Herman Cortes 26
39080 Santander
SPAIN

Prepared as part of:
The Agreement on Research Participation and Technical Exchange
under the International Code Application and Maintenance Program (CAMP)

Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This report has been prepared by NUCLENOR in the framework of the CAMP/SPAIN Project. It represents one of the application calculations submitted in fulfillment 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 (USNRC).

The work consisted in using the TRAC-BF1 code to reproduce a transient that took place at Santa María de Garoña Nuclear Power Plant (NPP) on June 9, 1993. The event was originated by a transformer failure that led to a loss of generator excitation and consequently a recirculation pump trip.

Santa María de Garoña NPP is a 1381 MWth General Electric Boiling Water Reactor 3 (GE BWR/3) owned by NUCLENOR, S. A., a Spanish utility that participates in the CAMP Program as a member of UNIDAD ELÉCTRICA S. A. (UNESA).

The simulation has been carried out with the TRAC-BF1/MOD1, code, version 0.4, running on a Workstation Hewlett Packard c180u under HP-UX operating system.

As a result of the analysis, it is felt that TRAC-BF1 is capable of reproducing the plant behaviour with an acceptable degree of accuracy. The main phenomena of the transient have been calculated correctly.

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