A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels
The performance of gadolinium burnable absorber (GdBA) for reactivity control in UO2 and (U, Th)O2 fuels and its impact on spent fuel characteristics was performed. Five fuel assemblies: one without GdBA fuel rod and four each containing 16, 24, 34 and 44 GdBA fuel rods in both fuels were investigat...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-06-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573319305042 |
| _version_ | 1818991068914384896 |
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| author | Edwin Humphrey Uguru S.F.Abdul Sani Mayeen Uddin Khandaker Mohamad Hairie Rabir Julia Abdul Karim |
| author_facet | Edwin Humphrey Uguru S.F.Abdul Sani Mayeen Uddin Khandaker Mohamad Hairie Rabir Julia Abdul Karim |
| author_sort | Edwin Humphrey Uguru |
| collection | DOAJ |
| description | The performance of gadolinium burnable absorber (GdBA) for reactivity control in UO2 and (U, Th)O2 fuels and its impact on spent fuel characteristics was performed. Five fuel assemblies: one without GdBA fuel rod and four each containing 16, 24, 34 and 44 GdBA fuel rods in both fuels were investigated. Reactivity swing in all the FAs with GdBA rods in UO2 fuel was higher than their counterparts with similar GdBA fuel rods in (U, Th)O2 fuel. The excess reactivity in all FAs with (U, Th)O2 fuel was higher than UO2 fuel. At the end of single discharge burn-up (~ 49.64 GWd/tHM), the excess reactivity of (U, Th)O2 fuel remained positive (16,000 pcm) while UO2 fuel shows a negative value (−6,000 pcm), which suggest a longer discharge burn-up in (U, Th)O2 fuel. The concentration of plutonium isotopes and minor actinides were significantly higher in UO2 fuel than in (U, Th)O2 fuel except for 236Np. However, the concentration of non-actinides (gadolinium and iodine isotopes) except for 135Xe were respectively smaller in (U, Th)O2 fuel than in UO2 fuel but may be two times higher in (U, Th)O2 fuel due to its potential longer discharge burn-up. |
| first_indexed | 2024-12-20T20:04:24Z |
| format | Article |
| id | doaj.art-a142542e69894d29bdb09102da261712 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-20T20:04:24Z |
| publishDate | 2020-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-a142542e69894d29bdb09102da2617122022-12-21T19:27:59ZengElsevierNuclear Engineering and Technology1738-57332020-06-0152610991109A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuelsEdwin Humphrey Uguru0S.F.Abdul Sani1Mayeen Uddin Khandaker2Mohamad Hairie Rabir3Julia Abdul Karim4Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia; Department of Industrial Physics, Ebonyi State University, P.M.B. 053, Abakaliki, Nigeria; Corresponding authors at: Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia; Corresponding authors at: Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia; Center for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor Darul Ehsan, MalaysiaNuclear and Reactor Physics Section, Nuclear Technology Center, Technical Support Division, Malaysian Nuclear Agency, Bangi, 43000, Kajang, Selangor, MalaysiaNuclear and Reactor Physics Section, Nuclear Technology Center, Technical Support Division, Malaysian Nuclear Agency, Bangi, 43000, Kajang, Selangor, MalaysiaThe performance of gadolinium burnable absorber (GdBA) for reactivity control in UO2 and (U, Th)O2 fuels and its impact on spent fuel characteristics was performed. Five fuel assemblies: one without GdBA fuel rod and four each containing 16, 24, 34 and 44 GdBA fuel rods in both fuels were investigated. Reactivity swing in all the FAs with GdBA rods in UO2 fuel was higher than their counterparts with similar GdBA fuel rods in (U, Th)O2 fuel. The excess reactivity in all FAs with (U, Th)O2 fuel was higher than UO2 fuel. At the end of single discharge burn-up (~ 49.64 GWd/tHM), the excess reactivity of (U, Th)O2 fuel remained positive (16,000 pcm) while UO2 fuel shows a negative value (−6,000 pcm), which suggest a longer discharge burn-up in (U, Th)O2 fuel. The concentration of plutonium isotopes and minor actinides were significantly higher in UO2 fuel than in (U, Th)O2 fuel except for 236Np. However, the concentration of non-actinides (gadolinium and iodine isotopes) except for 135Xe were respectively smaller in (U, Th)O2 fuel than in UO2 fuel but may be two times higher in (U, Th)O2 fuel due to its potential longer discharge burn-up.http://www.sciencedirect.com/science/article/pii/S1738573319305042Uranium fuelThorium fuelSmall modular reactorReactivityGadolinia |
| spellingShingle | Edwin Humphrey Uguru S.F.Abdul Sani Mayeen Uddin Khandaker Mohamad Hairie Rabir Julia Abdul Karim A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels Nuclear Engineering and Technology Uranium fuel Thorium fuel Small modular reactor Reactivity Gadolinia |
| title | A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels |
| title_full | A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels |
| title_fullStr | A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels |
| title_full_unstemmed | A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels |
| title_short | A comparative study on the impact of Gd2O3 burnable neutron absorber in UO2 and (U, Th)O2 fuels |
| title_sort | comparative study on the impact of gd2o3 burnable neutron absorber in uo2 and u th o2 fuels |
| topic | Uranium fuel Thorium fuel Small modular reactor Reactivity Gadolinia |
| url | http://www.sciencedirect.com/science/article/pii/S1738573319305042 |
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