SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR
Pressurized water reactors are typically surrounded in the radial direction by neutron reflectors made from stainless steel and water. These reflectors decrease neutron leakage and provide protection of pressure vessel from fast neutrons damaging its integrity. Such a radial reflector influences mul...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | EPJ Web of Conferences |
| Subjects: | |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_08003.pdf |
| _version_ | 1818676773636800512 |
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| author | Frybort Jan Sklenka Lubomir Fejt Filip Suk Pavel Frybortova Lenka |
| author_facet | Frybort Jan Sklenka Lubomir Fejt Filip Suk Pavel Frybortova Lenka |
| author_sort | Frybort Jan |
| collection | DOAJ |
| description | Pressurized water reactors are typically surrounded in the radial direction by neutron reflectors made from stainless steel and water. These reflectors decrease neutron leakage and provide protection of pressure vessel from fast neutrons damaging its integrity. Such a radial reflector influences multiplication factor of the core and distribution of neutron flux and fission power inside the core. All these effects can be analyzed by full-core simulations using macroscopic constants. Methodology for generation of the macroscopic constants for non-fuel regions will be tested for new stainless steel reflectors at the VR-1 reactor. Rods from SS 304l material will be used for construction of radial reflectors for the VR-1 reactor. They will be design to generate sufficient measurable response in selected core characteristics. The study is focused on core power distribution and reactivity worth of absorbing rods in a VR-1 reactor core. The core typically consists of about 20 IRT-4M fuel assemblies and seven absorbing rods UR-70. Replacing water surrounding the core by several reflector assemblies containing stainless steel will influence leakage and distribution of neutrons inside the core. The current analysis deals with local effects and employs the sensitivity study to discover the nature of reflectors’ impact on the reactor core. These effects were studied even for several past VR-1 reactor core configurations. All calculations were carried out in Serpent2 Monte-Carlo code with various evaluated libraries: ENDF/B-VII.1, ENDF/B-VIII.0, and JEFF-3.3 data. |
| first_indexed | 2024-12-17T08:48:48Z |
| format | Article |
| id | doaj.art-8d4b26d6f7564085bcd3b232a41715c2 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T08:48:48Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-8d4b26d6f7564085bcd3b232a41715c22022-12-21T21:56:08ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012470800310.1051/epjconf/202124708003epjconf_physor2020_08003SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTORFrybort Jan0Sklenka Lubomir1Fejt Filip2Suk Pavel3Frybortova Lenka4Czech Technical University in Prague Department of Nuclear Reactors, V Holesovickach 2Czech Technical University in Prague Department of Nuclear Reactors, V Holesovickach 2Czech Technical University in Prague Department of Nuclear Reactors, V Holesovickach 2Czech Technical University in Prague Department of Nuclear Reactors, V Holesovickach 2Czech Technical University in Prague Department of Nuclear Reactors, V Holesovickach 2Pressurized water reactors are typically surrounded in the radial direction by neutron reflectors made from stainless steel and water. These reflectors decrease neutron leakage and provide protection of pressure vessel from fast neutrons damaging its integrity. Such a radial reflector influences multiplication factor of the core and distribution of neutron flux and fission power inside the core. All these effects can be analyzed by full-core simulations using macroscopic constants. Methodology for generation of the macroscopic constants for non-fuel regions will be tested for new stainless steel reflectors at the VR-1 reactor. Rods from SS 304l material will be used for construction of radial reflectors for the VR-1 reactor. They will be design to generate sufficient measurable response in selected core characteristics. The study is focused on core power distribution and reactivity worth of absorbing rods in a VR-1 reactor core. The core typically consists of about 20 IRT-4M fuel assemblies and seven absorbing rods UR-70. Replacing water surrounding the core by several reflector assemblies containing stainless steel will influence leakage and distribution of neutrons inside the core. The current analysis deals with local effects and employs the sensitivity study to discover the nature of reflectors’ impact on the reactor core. These effects were studied even for several past VR-1 reactor core configurations. All calculations were carried out in Serpent2 Monte-Carlo code with various evaluated libraries: ENDF/B-VII.1, ENDF/B-VIII.0, and JEFF-3.3 data.https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_08003.pdfvr-1 reactorsensitivityreflectornuclear datapower distribution |
| spellingShingle | Frybort Jan Sklenka Lubomir Fejt Filip Suk Pavel Frybortova Lenka SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR EPJ Web of Conferences vr-1 reactor sensitivity reflector nuclear data power distribution |
| title | SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR |
| title_full | SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR |
| title_fullStr | SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR |
| title_full_unstemmed | SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR |
| title_short | SENSITIVITY ANALYSIS OF STAINLESS STEEL REFLECTOR FOR VR-1 TRAINING REACTOR |
| title_sort | sensitivity analysis of stainless steel reflector for vr 1 training reactor |
| topic | vr-1 reactor sensitivity reflector nuclear data power distribution |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_08003.pdf |
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