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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nuc</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник НЯЦ РК</journal-title><trans-title-group xml:lang="en"><trans-title>NNC RK Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7516</issn><issn pub-type="epub">1729-7885</issn><publisher><publisher-name>Национальный ядерный центр Республики Казахстан</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52676/1729-7885-2025-4-119-126</article-id><article-id custom-type="elpub" pub-id-type="custom">nuc-920</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>РАСЧЕТ НАКОПЛЕНИЯ РАДИОНУКЛИДОВ В ТВС РЕАКТОРА ВВЭР-1000  ПОСЛЕ ПЕРВОГО ТОПЛИВНОГО ЦИКЛА</article-title><trans-title-group xml:lang="en"><trans-title>CALCULATION OF RADIONUCLIDE ACCUMULATION IN A VVER-1000 FUEL ASSEMBLY AFTER THE FIRST FUEL CYCLE</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Секен</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Seken</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">seken@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сураев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Surayev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">suraev@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухамедов</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhamedov</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">mukhamedov@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иркимбеков</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Irkimbekov</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">Irkimbekov@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жанболатов</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhanbolatov</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">zhanbolatov@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Филиал «Институт атомной энергии» РГП НЯЦ РК<country>Казахстан</country></aff><aff xml:lang="en">Branch “Institute of Atomic Energy” RSE NNC RK<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>12</month><year>2025</year></pub-date><volume>0</volume><issue>4</issue><fpage>119</fpage><lpage>126</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Секен Д.М., Сураев А.С., Мухамедов Н.Е., Иркимбеков Р.А., Жанболатов О.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Секен Д.М., Сураев А.С., Мухамедов Н.Е., Иркимбеков Р.А., Жанболатов О.М.</copyright-holder><copyright-holder xml:lang="en">Seken D.M., Surayev A.S., Mukhamedov N.E., Irkimbekov R.A., Zhanbolatov O.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journals.nnc.kz/jour/article/view/920">https://journals.nnc.kz/jour/article/view/920</self-uri><abstract><p>В работе представлено нейтронно-физическое моделирование накопления радионуклидов в реакторе ВВЭР-1000 после первого топливного цикла с использованием кода MCNP6 и библиотек ENDF/B-VII. Проведены расчёты по образованию основных долгоживущих продуктов деления (90Sr, 99Tc, 137Cs, 129I и др.), актиноидов (Np, Pu, Am), благородных газов (Kr, Xe), а также аэрозольных и йодсодержащих радионуклидов. Особое внимание уделено оценке остаточной активности и влияния накопленных изотопов на радиационную безопасность. Исследование имеет прикладное значение для разработки стратегий обращения с ОЯТ и ТРО, проектирования хранилищ, оценки экологических рисков и развития атомной энергетики в Республике Казахстан.</p></abstract><trans-abstract xml:lang="en"><p>This study presents neutron-physical modeling of radionuclide accumulation in a VVER-1000 reactor after the first fuel cycle using the MCNP6 code and the ENDF/B-VII nuclear data libraries. Calculations were performed to determine the generation of major long-lived fission products (⁹⁰Sr, ⁹⁹Tc, ¹³⁷Cs, ¹²⁹I, etc.), actinides (Np, Pu, Am), noble gases (Kr, Xe), as well as aerosol-forming and iodine-containing radionuclides. Special attention is given to the evaluation of residual activity, and the impact of accumulated isotopes on radiation safety. The findings are of practical importance for the development of spent nuclear fuel (SNF) management strategies, storage design, environmental risk assessment, and preparation for nuclear power plant construction in Kazakhstan.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>выгорание топлива</kwd><kwd>радионуклиды</kwd><kwd>актиноиды</kwd><kwd>отработанное ядерное топливо</kwd><kwd>твердые радиоактивные отходы</kwd><kwd>активность</kwd><kwd>радиационная безопасность</kwd><kwd>нейтронно-физические расчёты</kwd><kwd>MCNP</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fuel burnup</kwd><kwd>radionuclides</kwd><kwd>actinides</kwd><kwd>spent nuclear fuel</kwd><kwd>activity</kwd><kwd>radiation safety</kwd><kwd>modeling</kwd><kwd>neutron-physical calculations</kwd><kwd>MCNP</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">MCNP6 Monte Carlo NeParticle Transport Code System, MCNP6.1, LANL, 2013.</mixed-citation><mixed-citation xml:lang="en">MCNP6 Monte Carlo NeParticle Transport Code System, MCNP6.1, LANL, 2013.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">ENDF/B-VII.0: next generation evaluated nuclear data library for nuclear science and technology. 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