Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II
One of the limiting factors of the life of a nuclear power plant (NPP) is the state of the reactor pressure vessel (RPV). Embrittlement is the most important effect affecting RPV aging. The irradiation with neutrons, especially fast neutrons, is the primary cause of this embrittlement. NPP safe oper...
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| Format: | Article |
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Wiley
2011-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2011/534689 |
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| author | J. A. Mascitti M. Madariaga |
| author_facet | J. A. Mascitti M. Madariaga |
| author_sort | J. A. Mascitti |
| collection | DOAJ |
| description | One of the limiting factors of the life of a nuclear power plant (NPP) is the state of the reactor pressure vessel (RPV). Embrittlement is the most important effect affecting RPV aging. The irradiation with neutrons, especially fast neutrons, is the primary cause of this embrittlement. NPP safe operation requires to ensure RPV integrity over its lifetime, threatened by the neutron radiation-induced embrittlement. In this paper, we identify the areas where the RPV neutron radiation is maximum and perform calculations of the displacement-per-atom (DPA) rate in those areas using the MCNP5 code.
It was determined that the maximum DPA rate in the RPV wall with fresh fuel element (FE) is 3.76(3) × 10-12 s-1, it takes place in front of FEs BA42 and BL43, and it is symmetrical about the central channel, LG04, and LH03. |
| format | Article |
| id | doaj-art-918e90cf2eab4140a36737a316f6f40e |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-918e90cf2eab4140a36737a316f6f40e2025-02-03T01:32:33ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832011-01-01201110.1155/2011/534689534689Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha IIJ. A. Mascitti0M. Madariaga1Gerencia de Licenciamiento y Control de Reactores Nucleares, Autoridad Regulatoria Nuclear, Avenida Del Libertador 8250, Ciudad Autónoma de Buenos Aires 1429, ArgentinaGerencia de Licenciamiento y Control de Reactores Nucleares, Autoridad Regulatoria Nuclear, Avenida Del Libertador 8250, Ciudad Autónoma de Buenos Aires 1429, ArgentinaOne of the limiting factors of the life of a nuclear power plant (NPP) is the state of the reactor pressure vessel (RPV). Embrittlement is the most important effect affecting RPV aging. The irradiation with neutrons, especially fast neutrons, is the primary cause of this embrittlement. NPP safe operation requires to ensure RPV integrity over its lifetime, threatened by the neutron radiation-induced embrittlement. In this paper, we identify the areas where the RPV neutron radiation is maximum and perform calculations of the displacement-per-atom (DPA) rate in those areas using the MCNP5 code. It was determined that the maximum DPA rate in the RPV wall with fresh fuel element (FE) is 3.76(3) × 10-12 s-1, it takes place in front of FEs BA42 and BL43, and it is symmetrical about the central channel, LG04, and LH03.http://dx.doi.org/10.1155/2011/534689 |
| spellingShingle | J. A. Mascitti M. Madariaga Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II Science and Technology of Nuclear Installations |
| title | Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II |
| title_full | Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II |
| title_fullStr | Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II |
| title_full_unstemmed | Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II |
| title_short | Method for the Calculation of DPA in the Reactor Pressure Vessel of Atucha II |
| title_sort | method for the calculation of dpa in the reactor pressure vessel of atucha ii |
| url | http://dx.doi.org/10.1155/2011/534689 |
| work_keys_str_mv | AT jamascitti methodforthecalculationofdpainthereactorpressurevesselofatuchaii AT mmadariaga methodforthecalculationofdpainthereactorpressurevesselofatuchaii |