Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility
Integral test facilities (ITFs) are one of the main tools for the validation of best estimate thermalhydraulic system codes. The experimental data are also of great value when compared to the experiment-scaled conditions in a full NPP. The LOBI was a single plus a triple-loop (simulated by one loop)...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2012/474162 |
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| author | F. Reventós P. Pla C. Matteoli G. Nacci M. Cherubini A. Del Nevo F. D'Auria |
| author_facet | F. Reventós P. Pla C. Matteoli G. Nacci M. Cherubini A. Del Nevo F. D'Auria |
| author_sort | F. Reventós |
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| description | Integral test facilities (ITFs) are one of the main tools for the validation of best estimate thermalhydraulic system codes. The experimental data are also of great value when compared to the experiment-scaled conditions in a full NPP. The LOBI was a single plus a triple-loop (simulated by one loop) test facility electrically heated to simulate a 1300 MWe PWR. The scaling factor was 712 for the core power, volume, and mass flow. Primary and secondary sides contained all main active elements. Tests were performed for the characterization of phenomenologies relevant to large and small break LOCAs and special transients in PWRs. The paper presents the results of three posttest calculations of LOBI experiments. The selected experiments are BL-30, BL-44, and A1-84. They are LOCA scenarios of different break sizes and with different availability of safety injection components. The goal of the analysis is to improve the knowledge of the phenomena occurred in the facility in order to use it in further studies related to qualifying nodalizations of actual plants or to establish accuracy data bases for uncertainty methodologies. An example of procedure of implementing changes in a common nodalization valid for simulating tests occurred in a specific ITF is presented along with its confirmation based on posttests results. |
| format | Article |
| id | doaj-art-2d7aaa88b197404db5441a2119917be4 |
| institution | OA Journals |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-2d7aaa88b197404db5441a2119917be42025-08-20T02:07:38ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832012-01-01201210.1155/2012/474162474162Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral FacilityF. Reventós0P. Pla1C. Matteoli2G. Nacci3M. Cherubini4A. Del Nevo5F. D'Auria6Department of Physics and Nuclear Engineering, Technical University of Catalonia (UPC), Diagonal 647, 08028 Barcelona, SpainEuropean Commission, Joint Research Centre (JRC-IE), Institute for Energy 1755 ZG, Petten, The NetherlandsDepartment of Physics and Nuclear Engineering, Technical University of Catalonia (UPC), Diagonal 647, 08028 Barcelona, SpainDepartment of Physics and Nuclear Engineering, Technical University of Catalonia (UPC), Diagonal 647, 08028 Barcelona, SpainSan Piero a Grado Nuclear Research Group, University of Pisa (GRNSPG-UNIPI), 56126 Pisa, ItalySan Piero a Grado Nuclear Research Group, University of Pisa (GRNSPG-UNIPI), 56126 Pisa, ItalySan Piero a Grado Nuclear Research Group, University of Pisa (GRNSPG-UNIPI), 56126 Pisa, ItalyIntegral test facilities (ITFs) are one of the main tools for the validation of best estimate thermalhydraulic system codes. The experimental data are also of great value when compared to the experiment-scaled conditions in a full NPP. The LOBI was a single plus a triple-loop (simulated by one loop) test facility electrically heated to simulate a 1300 MWe PWR. The scaling factor was 712 for the core power, volume, and mass flow. Primary and secondary sides contained all main active elements. Tests were performed for the characterization of phenomenologies relevant to large and small break LOCAs and special transients in PWRs. The paper presents the results of three posttest calculations of LOBI experiments. The selected experiments are BL-30, BL-44, and A1-84. They are LOCA scenarios of different break sizes and with different availability of safety injection components. The goal of the analysis is to improve the knowledge of the phenomena occurred in the facility in order to use it in further studies related to qualifying nodalizations of actual plants or to establish accuracy data bases for uncertainty methodologies. An example of procedure of implementing changes in a common nodalization valid for simulating tests occurred in a specific ITF is presented along with its confirmation based on posttests results.http://dx.doi.org/10.1155/2012/474162 |
| spellingShingle | F. Reventós P. Pla C. Matteoli G. Nacci M. Cherubini A. Del Nevo F. D'Auria Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility Science and Technology of Nuclear Installations |
| title | Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility |
| title_full | Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility |
| title_fullStr | Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility |
| title_full_unstemmed | Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility |
| title_short | Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility |
| title_sort | consistent posttest calculations for loca scenarios in lobi integral facility |
| url | http://dx.doi.org/10.1155/2012/474162 |
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