Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000
The purpose of this paper is to study the source term behavior after severe accidents by using a semi-kinetic model for simulation and calculation of in-containment activity. The reactor containment specification and the safety features of the containment under different accident conditions play a g...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-02-01
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| Series: | Nuclear Engineering and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573317308173 |
| _version_ | 1819320131538386944 |
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| author | S. Jafarikia S.A.H. Feghhi |
| author_facet | S. Jafarikia S.A.H. Feghhi |
| author_sort | S. Jafarikia |
| collection | DOAJ |
| description | The purpose of this paper is to study the source term behavior after severe accidents by using a semi-kinetic model for simulation and calculation of in-containment activity. The reactor containment specification and the safety features of the containment under different accident conditions play a great role in evaluating the in-containment activity.Assuming in-vessel and instantaneous release of radioactivity into the containment, the behavior of in-containment isotopic activity is studied for noble gasses (Kr and Xe) and the more volatile elements of iodine, cesium, and aerosols such as Te, Rb and Sr as illustrative examples of source term release under LOCA conditions. The results of the activity removal mechanisms indicates that the impact of volumetric leakage rate for noble gasses is important during the accident, while the influence of deposition on the containment surfaces for cesium, mainly iodine isotopes and aerosol has the largest contribution in removal of activity during evolution of the accident. Keywords: IRBURN, VVER-1000 reactors, Source term calculation, Containment engineering safety features |
| first_indexed | 2024-12-24T11:14:42Z |
| format | Article |
| id | doaj.art-1f9d7e2a516b4b0185246576fbece45e |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-24T11:14:42Z |
| publishDate | 2019-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-1f9d7e2a516b4b0185246576fbece45e2022-12-21T16:58:25ZengElsevierNuclear Engineering and Technology1738-57332019-02-01511125137Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000S. Jafarikia0S.A.H. Feghhi1Corresponding author.; Department of Radiation Application, Shahid Beheshti University, G.C, Tehran, IranDepartment of Radiation Application, Shahid Beheshti University, G.C, Tehran, IranThe purpose of this paper is to study the source term behavior after severe accidents by using a semi-kinetic model for simulation and calculation of in-containment activity. The reactor containment specification and the safety features of the containment under different accident conditions play a great role in evaluating the in-containment activity.Assuming in-vessel and instantaneous release of radioactivity into the containment, the behavior of in-containment isotopic activity is studied for noble gasses (Kr and Xe) and the more volatile elements of iodine, cesium, and aerosols such as Te, Rb and Sr as illustrative examples of source term release under LOCA conditions. The results of the activity removal mechanisms indicates that the impact of volumetric leakage rate for noble gasses is important during the accident, while the influence of deposition on the containment surfaces for cesium, mainly iodine isotopes and aerosol has the largest contribution in removal of activity during evolution of the accident. Keywords: IRBURN, VVER-1000 reactors, Source term calculation, Containment engineering safety featureshttp://www.sciencedirect.com/science/article/pii/S1738573317308173 |
| spellingShingle | S. Jafarikia S.A.H. Feghhi Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 Nuclear Engineering and Technology |
| title | Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 |
| title_full | Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 |
| title_fullStr | Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 |
| title_full_unstemmed | Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 |
| title_short | Contribution of production and loss terms of fission products on in-containment activity under severe accident condition for VVER-1000 |
| title_sort | contribution of production and loss terms of fission products on in containment activity under severe accident condition for vver 1000 |
| url | http://www.sciencedirect.com/science/article/pii/S1738573317308173 |
| work_keys_str_mv | AT sjafarikia contributionofproductionandlosstermsoffissionproductsonincontainmentactivityundersevereaccidentconditionforvver1000 AT sahfeghhi contributionofproductionandlosstermsoffissionproductsonincontainmentactivityundersevereaccidentconditionforvver1000 |