On the cyclic change in the dynamics of the IBR-2M pulsed reactor
It is shown that in the IBR-2M reactor by the end of the reactor cycle, changes in dynamics are observed associated with a strong weakening of the fast power feedback (PF), as a result of which the reactor becomes oscillatorily unstable. After each week of zero-power operation the negative changes i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573323000049 |
| _version_ | 1797823790106804224 |
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| author | Yu.N. Pepelyshev Sumkhuu Davaasuren |
| author_facet | Yu.N. Pepelyshev Sumkhuu Davaasuren |
| author_sort | Yu.N. Pepelyshev |
| collection | DOAJ |
| description | It is shown that in the IBR-2M reactor by the end of the reactor cycle, changes in dynamics are observed associated with a strong weakening of the fast power feedback (PF), as a result of which the reactor becomes oscillatorily unstable. After each week of zero-power operation the negative changes in reactor dynamics disappear and the stability of the reactor is restored. Thus, the reactor undergoes cyclic changes in the oscillatory instability. The correlation between of a fast PF and a slow PF is experimentally observed, which makes it possible to almost completely eliminate the cyclic component of instability by changing the control mode of rods of the control system. |
| first_indexed | 2024-03-13T10:29:15Z |
| format | Article |
| id | doaj.art-b671c00b9b52410589cfd85d5d3112e3 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-03-13T10:29:15Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-b671c00b9b52410589cfd85d5d3112e32023-05-19T04:45:10ZengElsevierNuclear Engineering and Technology1738-57332023-05-0155516651670On the cyclic change in the dynamics of the IBR-2M pulsed reactorYu.N. Pepelyshev0Sumkhuu Davaasuren1Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, RussiaCorresponding author.; Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, RussiaIt is shown that in the IBR-2M reactor by the end of the reactor cycle, changes in dynamics are observed associated with a strong weakening of the fast power feedback (PF), as a result of which the reactor becomes oscillatorily unstable. After each week of zero-power operation the negative changes in reactor dynamics disappear and the stability of the reactor is restored. Thus, the reactor undergoes cyclic changes in the oscillatory instability. The correlation between of a fast PF and a slow PF is experimentally observed, which makes it possible to almost completely eliminate the cyclic component of instability by changing the control mode of rods of the control system.http://www.sciencedirect.com/science/article/pii/S1738573323000049IBR-2MPulsed reactorPower feedbackControl rodReactor stability |
| spellingShingle | Yu.N. Pepelyshev Sumkhuu Davaasuren On the cyclic change in the dynamics of the IBR-2M pulsed reactor Nuclear Engineering and Technology IBR-2M Pulsed reactor Power feedback Control rod Reactor stability |
| title | On the cyclic change in the dynamics of the IBR-2M pulsed reactor |
| title_full | On the cyclic change in the dynamics of the IBR-2M pulsed reactor |
| title_fullStr | On the cyclic change in the dynamics of the IBR-2M pulsed reactor |
| title_full_unstemmed | On the cyclic change in the dynamics of the IBR-2M pulsed reactor |
| title_short | On the cyclic change in the dynamics of the IBR-2M pulsed reactor |
| title_sort | on the cyclic change in the dynamics of the ibr 2m pulsed reactor |
| topic | IBR-2M Pulsed reactor Power feedback Control rod Reactor stability |
| url | http://www.sciencedirect.com/science/article/pii/S1738573323000049 |
| work_keys_str_mv | AT yunpepelyshev onthecyclicchangeinthedynamicsoftheibr2mpulsedreactor AT sumkhuudavaasuren onthecyclicchangeinthedynamicsoftheibr2mpulsedreactor |