Analysis of Calculation Model for Primary Coolant Fission Products
The sources of radioactive contamination of the primary coolant by fission products when the unit is operating at the rated power are as follows: defect fuel elements with gas leakiness and substantial damages, surface contamination of the outer surfaces of fuel claddings, superficial contamination...
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Lviv Polytechnic National University
2023-12-01
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| Series: | Energy Engineering and Control Systems |
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| Online Access: | https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-9-number-2-2023/analysis-calculation-model-primary-coolant |
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| author | Stepan Lys |
| author_facet | Stepan Lys |
| author_sort | Stepan Lys |
| collection | DOAJ |
| description | The sources of radioactive contamination of the primary coolant by fission products when the unit is operating at the rated power are as follows: defect fuel elements with gas leakiness and substantial damages, surface contamination of the outer surfaces of fuel claddings, superficial contamination of structural materials of fuel assemblies. Initially in the reactor operation (if there are no manufacturing defects in fuel elements), the contamination of the coolant by fission products is determined by the release into the reactor coolant circuit of fission fragments of Uranium-235 (due to their kinetic energy) that is present on the outer surfaces of fuel elements as contamination in their manufacturing. During normal operation of the reactor, the integrity of cladding may fail due to various processes of corrosion fatigue type. These processes result in, first of all, micro-fissures and then in large defects in the claddings, which is accompanied by an increase in the release of fission products from fuel elements into the primary coolant. |
| format | Article |
| id | doaj-art-8cc3f2a658074ab4b332d9785b1335fc |
| institution | Kabale University |
| issn | 2411-8028 2415-7287 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Lviv Polytechnic National University |
| record_format | Article |
| series | Energy Engineering and Control Systems |
| spelling | doaj-art-8cc3f2a658074ab4b332d9785b1335fc2025-08-20T03:31:49ZengLviv Polytechnic National UniversityEnergy Engineering and Control Systems2411-80282415-72872023-12-0192697410.23939/jeecs2023.02.069Analysis of Calculation Model for Primary Coolant Fission Products Stepan Lys0Lviv Polytechnic National UniversityThe sources of radioactive contamination of the primary coolant by fission products when the unit is operating at the rated power are as follows: defect fuel elements with gas leakiness and substantial damages, surface contamination of the outer surfaces of fuel claddings, superficial contamination of structural materials of fuel assemblies. Initially in the reactor operation (if there are no manufacturing defects in fuel elements), the contamination of the coolant by fission products is determined by the release into the reactor coolant circuit of fission fragments of Uranium-235 (due to their kinetic energy) that is present on the outer surfaces of fuel elements as contamination in their manufacturing. During normal operation of the reactor, the integrity of cladding may fail due to various processes of corrosion fatigue type. These processes result in, first of all, micro-fissures and then in large defects in the claddings, which is accompanied by an increase in the release of fission products from fuel elements into the primary coolant.https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-9-number-2-2023/analysis-calculation-model-primary-coolantreactorcalculation modelcorrosionprimary coolantfission products |
| spellingShingle | Stepan Lys Analysis of Calculation Model for Primary Coolant Fission Products Energy Engineering and Control Systems reactor calculation model corrosion primary coolant fission products |
| title | Analysis of Calculation Model for Primary Coolant Fission Products |
| title_full | Analysis of Calculation Model for Primary Coolant Fission Products |
| title_fullStr | Analysis of Calculation Model for Primary Coolant Fission Products |
| title_full_unstemmed | Analysis of Calculation Model for Primary Coolant Fission Products |
| title_short | Analysis of Calculation Model for Primary Coolant Fission Products |
| title_sort | analysis of calculation model for primary coolant fission products |
| topic | reactor calculation model corrosion primary coolant fission products |
| url | https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-9-number-2-2023/analysis-calculation-model-primary-coolant |
| work_keys_str_mv | AT stepanlys analysisofcalculationmodelforprimarycoolantfissionproducts |