The document deals with the post-test analysis of an experiment performed to characterize the LOBI system performance in the configuration Mode2. LOBI was a Pressurized Water Reactor (PWR) simulator installed in the EC center of Ispra Italy financially supported by EURATOM. The configuration Mod2 of LOBI was designed as a consequence of the Three Mile accident in US and is the follow-up of the configuration Mod1. Mod2 was designed to simulate stratification phenomena and natural circulation which are important during Small Break Loss of Coolant Accidents (SBLOCA); as a difference Mod1 was designed to simulate phenomena expected during Large Break Loss of Coolant (LBLOCA) scenarios. Namely downcomer size in Mod2 was much smaller than in the case of Mod1 and a large number of Emergency Core Cooling Systems (ECCS) were installed in Mod2. The concerned SD-SL-03 experiment was performed to characterize the facility. The code application allowed the optimization of the nodalization by Relap 4 preparing for the campaign of experiments. Furthermore the comparison between experiment and calculation constituted the basis for developing accuracy quantification method. (relevant to code validation) . The work was discussed in a specific meeting of the so-called SBATF research group where University of Pisa represented Italy.

Post-test analysis of LOBI test SD-SL-03 performed by RELAP4/MOD6 code

D'Auria F.
Secondo
Methodology
;
1983

Abstract

The document deals with the post-test analysis of an experiment performed to characterize the LOBI system performance in the configuration Mode2. LOBI was a Pressurized Water Reactor (PWR) simulator installed in the EC center of Ispra Italy financially supported by EURATOM. The configuration Mod2 of LOBI was designed as a consequence of the Three Mile accident in US and is the follow-up of the configuration Mod1. Mod2 was designed to simulate stratification phenomena and natural circulation which are important during Small Break Loss of Coolant Accidents (SBLOCA); as a difference Mod1 was designed to simulate phenomena expected during Large Break Loss of Coolant (LBLOCA) scenarios. Namely downcomer size in Mod2 was much smaller than in the case of Mod1 and a large number of Emergency Core Cooling Systems (ECCS) were installed in Mod2. The concerned SD-SL-03 experiment was performed to characterize the facility. The code application allowed the optimization of the nodalization by Relap 4 preparing for the campaign of experiments. Furthermore the comparison between experiment and calculation constituted the basis for developing accuracy quantification method. (relevant to code validation) . The work was discussed in a specific meeting of the so-called SBATF research group where University of Pisa represented Italy.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/891856
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