Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences
The comparison of experimental values of the critical brittle temperature ΔTF and reference temperature ΔT0 of VVER-1000 reactor vessel weld metal with an elevated content of manganese and nickel is performed. ΔTF and ΔT0 values are defined proceeding from the standard impact bend Charpy and Charpy...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Institute for Nuclear Research, National Academy of Sciences of Ukraine
2020-12-01
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| Series: | Ядерна фізика та енергетика |
| Subjects: | |
| Online Access: | http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0323-Chyrko.pdf |
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| author | L. I. Chyrko V. M. Revka Yu. V. Chaikovskyi M. G. Goliak O. V. Trygubenko O. V. Shkapyak |
| author_facet | L. I. Chyrko V. M. Revka Yu. V. Chaikovskyi M. G. Goliak O. V. Trygubenko O. V. Shkapyak |
| author_sort | L. I. Chyrko |
| collection | DOAJ |
| description | The comparison of experimental values of the critical brittle temperature ΔTF and reference temperature ΔT0 of VVER-1000 reactor vessel weld metal with an elevated content of manganese and nickel is performed. ΔTF and ΔT0 values are defined proceeding from the standard impact bend Charpy and Charpy cracked fracture toughness specimen tests, respectively. Specimens were irradiated in industrial reactors in the frame of surveillance specimen program up to the fast (E ≥ 0.5 MeV) neutron fluences corresponding to the NPP long term operation period. The research results showed the shifts ΔTF and ΔT0 to agree with each other. Besides, it was discovered that in the range of over-design fluences the design embrittlement model has a tendency to underestimate the critical brittle temperature shift. |
| format | Article |
| id | doaj-art-3a403d6cdb4c46f3873ded4f9e79a8ad |
| institution | Kabale University |
| issn | 1818-331X 2074-0565 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Institute for Nuclear Research, National Academy of Sciences of Ukraine |
| record_format | Article |
| series | Ядерна фізика та енергетика |
| spelling | doaj-art-3a403d6cdb4c46f3873ded4f9e79a8ad2025-08-20T03:55:37ZengInstitute for Nuclear Research, National Academy of Sciences of UkraineЯдерна фізика та енергетика1818-331X2074-05652020-12-01214323327https://doi.org/10.15407/jnpae2020.04.323Weld metal irradiation embrittlement analysis in the range of over-design neutron fluencesL. I. Chyrko0V. M. Revka1Yu. V. Chaikovskyi2M. G. Goliak3O. V. Trygubenko4O. V. Shkapyak5Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineInstitute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineInstitute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineInstitute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineInstitute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineInstitute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineThe comparison of experimental values of the critical brittle temperature ΔTF and reference temperature ΔT0 of VVER-1000 reactor vessel weld metal with an elevated content of manganese and nickel is performed. ΔTF and ΔT0 values are defined proceeding from the standard impact bend Charpy and Charpy cracked fracture toughness specimen tests, respectively. Specimens were irradiated in industrial reactors in the frame of surveillance specimen program up to the fast (E ≥ 0.5 MeV) neutron fluences corresponding to the NPP long term operation period. The research results showed the shifts ΔTF and ΔT0 to agree with each other. Besides, it was discovered that in the range of over-design fluences the design embrittlement model has a tendency to underestimate the critical brittle temperature shift.http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0323-Chyrko.pdfvver-1000 reactor vesselcritical brittle temperature shiftreference temperature shiftirradiation embrittlement. |
| spellingShingle | L. I. Chyrko V. M. Revka Yu. V. Chaikovskyi M. G. Goliak O. V. Trygubenko O. V. Shkapyak Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences Ядерна фізика та енергетика vver-1000 reactor vessel critical brittle temperature shift reference temperature shift irradiation embrittlement. |
| title | Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences |
| title_full | Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences |
| title_fullStr | Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences |
| title_full_unstemmed | Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences |
| title_short | Weld metal irradiation embrittlement analysis in the range of over-design neutron fluences |
| title_sort | weld metal irradiation embrittlement analysis in the range of over design neutron fluences |
| topic | vver-1000 reactor vessel critical brittle temperature shift reference temperature shift irradiation embrittlement. |
| url | http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0323-Chyrko.pdf |
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