Test LOBI–BL06: Post-Test Analysis and RELAP5/MOD3.2.1 Code Performance Assessment (NUREG/IA-0162)

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Publication Information

Date Published: April 1999

Prepared by:
T. Fiore
P. Marsili

Agenzia Nazionale per la Protezione dell' Ambiente (ANPA)
Via Vitaliano Brancati 48
00144 Roma, Italy

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

Availability Notice


This report deals with the results of the "post-test analysis" of the test BL-06 performed in the LOBI/MOD2 test facility.

LOBI/MOD2 is an integral test facility that represents, at approximately 1:712 scale, a four loop (KWU design, 1300 MWe) PWR.

The test BL-06 simulates a 1% cold leg break LOCA, with the main coolant pumps switched off very late in the transient.

The calculations have been realized with the code Relap5/Mod3.2.1. The uncertainty evaluation of the calculation result has been performed using a specific method developed by Pisa University.

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