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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">energy</journal-id><journal-title-group><journal-title xml:lang="ru">Энергетика. Известия высших учебных заведений и энергетических объединений СНГ</journal-title><trans-title-group xml:lang="en"><trans-title>ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1029-7448</issn><issn pub-type="epub">2414-0341</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/1029-7448-2021-64-2-178-186</article-id><article-id custom-type="elpub" pub-id-type="custom">energy-2060</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>ТЕПЛОЭНЕРГЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>НEAT POWER ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Анализ производительности пассивного каталитического рекомбинатора водорода с учетом условий внутри герметичного ограждения локализующей системы безопасности АЭС с ВВЭР</article-title><trans-title-group xml:lang="en"><trans-title>Аnalysis Catalytic Hydrogen Recombiner Capacity Calculation Taking into Account Conditions Inside Sealed Enclosure of Containment Safety System of Nuclear Power Plants with Water-Water Energetic Reactor</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>Сорокин</surname><given-names>В. B.</given-names></name><name name-style="western" xml:lang="en"><surname>Sorokin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки: Сорокин Владимир Владимирович – Белорусский национальный технический университет, просп. Независимости, 65/2, 220013, г. Минск, Республика Беларусь.  Тел.: +375 17 293-91-45 sorokin.npp@gmail.com</p></bio><bio xml:lang="en"><p>Address for correspondence: Sorokin Vladimir V. – Belarusian National Technical University, 65/2, Nezavisimosty Ave., 220013, Minsk, Republic of Belarus. Tel.: +375 17 293-91-45 sorokin.npp@gmail.com</p></bio><email xlink:type="simple">sorokin.npp@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>09</day><month>04</month><year>2021</year></pub-date><volume>64</volume><issue>2</issue><fpage>178</fpage><lpage>186</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сорокин В.B., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Сорокин В.B.</copyright-holder><copyright-holder xml:lang="en">Sorokin V.V.</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://energy.bntu.by/jour/article/view/2060">https://energy.bntu.by/jour/article/view/2060</self-uri><abstract><p>На современной атомной электростанции предусмотрены локализующие системы безопасности для удержания при аварии радиоактивных веществ и ослабления ионизирующего излучения. Вместе с радиоактивными веществами удерживается и водород, образующийся при разложении теплоносителя первого контура. Накопление водорода в присутствии кислорода из атмосферы в зоне локализации аварии несет опасность формирования горючих и взрывоопасных концентраций этих компонентов. В проектах АЭС с ВВЭР предусмотрена система удаления водорода, включающая пассивные каталитические рекомбинаторы водорода. Производительность устройств подтверждается экспериментально в эталонных условиях (бедная воздушно-водородная смесь, давление и температура близки к нормальным, отсутствие помех для газообмена). Производительность – важный для безопасности параметр. Внутри герметичного ограждения локализующей системы безопасности АЭС с ВВЭР при аварии условия могут отличаться от эталонных и влиять на производительность. На основе расчетов исследована работа рекомбинаторов при недостатке кислорода и при затрудненном газообмене. Снижение производительности при недостатке кислорода достигает 50 %, что вызвано в основном ростом недожога. По сравнению с эталонными условиями, при аварии эффект выражен сильнее – 60–70 %. Затрудненный газообмен моделируется уменьшением высоты тягового канала рекомбинатора. К этому случаю можно свести размещение устройства в стесненных условиях и влияние скорости атмосферы внутри ограждения. Независимо от концентрации водорода рабочая характеристика устройства остается линейной, двукратное уменьшение высоты приводит к снижению производительности на 20 %. Результаты могут использоваться при обосновании безопасности АЭС с ВВЭР и экспертизе отчетов по обоснованию безопасности энергоблоков.</p></abstract><trans-abstract xml:lang="en"><p>Localizing safety systems are provided to contain radioactive substances in an accident and attenuate ionizing radiation at a modern nuclear power plant. Together with radioactive substances, hydrogen is also retained, which is formed during the decomposition of the primary coolant. The accumulation of hydrogen in the presence of oxygen from the atmosphere in the accident localization zone carries the danger of the formation of flammable and explosive concentrations of these components. Nuclear power plant (NPP) deigns with water-water energetic reactor (WWER) provides for a hydrogen removal system including passive catalytic hydrogen recombiners. The device capacity  is confirmed experimentally under reference conditions (lean air-hydrogen mixture, pressure and temperature close to normal, no interference with gas exchange). Capacity is an important safety parameter. In the event of an accident, conditions inside the ealed enclosure of the localizing system of NPP with WWER can  differ from the reference  ones and affect the capacity.  On the basis of calculations, the operation of recombiners with lack of  oxygen  and with hindered  gas exchange has been investigated in the paper. The decrease in capacity with lack of oxygen reaches 50 %, which is mainly  caused by an increase in underburning. Compared to the reference conditions, the effect is more pronounced in the event of an accident – 60–70 %. The hindered gas exchange is modeled by a decrease in the height of recombiner traction channel. This case can be reduced to the placement of the device in cramped conditions and the effect of the atmosphere speed inside the enclosure. Regardless of the hydrogen concentration, the operating characteristic of the device remains linear, with a two-fold decrease in height leads to a decrease in capacity by 20 %. The results can be used to substantiate the safety of NPPs with WWER and to review on the safety subtantiation of power units.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>АЭС</kwd><kwd>ВВЭР</kwd><kwd>водородная безопасность</kwd><kwd>пассивные каталитические рекомбинаторы водорода</kwd><kwd>герметичная оболочка</kwd><kwd>недостаток кислорода</kwd><kwd>условия размещения</kwd><kwd>расчеты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nuclear power plant</kwd><kwd>water-water energetic reactor</kwd><kwd>hydrogen safety</kwd><kwd>passive catalytic hydrogen recombiner</kwd><kwd>hermitically sealed enclosure</kwd><kwd>lack of oxygen</kwd><kwd>containment conditions</kwd><kwd>calculations</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">Проект АЭС-2006. Ленинградская АЭС-2. ОАО «СПбАЭП». 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