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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">10.52676/1729-7885-2023-4-58-66</article-id><article-id custom-type="elpub" pub-id-type="custom">nuc-575</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>ИЗУЧЕНИЕ ВОЗМОЖНОСТИ ПРИМЕНЕНИЯ ТЕХНОЛОГИИ ФАЗИРОВАННЫХ РЕШЕТОК ПРИ ОБСЛЕДОВАНИИ ТРУБОПРОВОДОВ РЕАКТОРА ВВР-К</article-title><trans-title-group xml:lang="en"><trans-title>STUDY ON THE USE OF PHASED ARRAY TECHNOLOGY FOR EXAMINATION OF PIPELINES OF THE WWR-K RECATOR</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3100-7304</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тиванова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tivanova</surname><given-names>O. V.</given-names></name></name-alternatives><email xlink:type="simple">oksana.tivanova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6526-8540</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермаков</surname><given-names>Е. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Yermakov</surname><given-names>Y. L.</given-names></name></name-alternatives><email xlink:type="simple">ermakov@inp.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9308-567X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акылбек</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Akylbek</surname><given-names>N. M.</given-names></name></name-alternatives><email xlink:type="simple">standart_kz18@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">РГП на ПХВ «Институт ядерной физики» МЭ РК<country>Казахстан</country></aff><aff xml:lang="en">RSE REM “Institute of Nuclear Physics” ME RK<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2023</year></pub-date><volume>0</volume><issue>4</issue><fpage>58</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тиванова О.В., Ермаков Е.Л., Акылбек Н.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тиванова О.В., Ермаков Е.Л., Акылбек Н.М.</copyright-holder><copyright-holder xml:lang="en">Tivanova O.V., Yermakov Y.L., Akylbek N.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/575">https://journals.nnc.kz/jour/article/view/575</self-uri><abstract><p>Первый контур атомного исследовательского реактора ВВР-К состоит из большого количества аустенитных сварных соединений различной конфигурации. Такие сварные швы демонстрируют анизотропные и неоднородные структуры с удлиненными зернами, которые могут затруднить интерпретацию данных радиографического и ультразвукового контроля. Особую настороженность вызывает корневая часть сварного шва, находящаяся под постоянным воздействием движущейся обессоленной воды, механических и термических нагрузок, которые могут вызвать возникновение и распространение трещин и эрозионных процессов. В настоящей работе рассматривается комплексный подход к исследованию дефектов аустенитных сварных соединений первого контура реактора ВВР-К, введенного эксплуатацию в 1967 г. Небольшие габаритные размеры, сложная конфигурация трубопровода, односторонний доступ, неизвестная форма шва не позволяет применять стандартизированные процедуры испытаний. Данные радиографического контроля показали наличие невыраженных протяженных несплошностей, похожих на непровары или несплавления. Для повышения надежности и экономичности контроля кольцевых сварных швов рассмотрено применение ультразвукового контроля линейной решеткой. Исследование заключалось в выборе оптимальных режимов сканирования, получения набора акустических изображений дефектов сварных соединений контрольных образцов с использованием 16-элементной ультразвуковой линейной решетки. Практическое апробирование проведено на аустенитных сварных соединениях трубопроводов ВВР-К с неметаллическим покрытием. Основные проблемы контроля трубопровода, требующие дальнейшей доработки, заключались в не высокой скорости сканирования, невозможности использования встроенной модели шва для интерпретации и определение истинных размеров дефектов. В целом, полученные в работе результаты показали достаточно хорошую выявляемость корневых дефектов и оценку их условных размеров с применением технологии фазированных решеток.</p></abstract><trans-abstract xml:lang="en"><p>The first circuit of the WWR-K nuclear research reactor consists of a large number of austenitic welded joints of various configurations. Such welds exhibit anisotropic and inhomogeneous structures with elongated grains, which can complicate interpretation of radiographic and ultrasonic data. The root part of the weld is of particular concern since it is under the constant influence of moving demineralized water, mechanical and thermal loads, which can cause the appearance and propagation of cracks and erosion processes. In this paper, we consider an integrated approach to the study of defects in austenitic welded joints in the primary circuit of the WWR-K reactor, commissioned in 1967. Small overall dimensions, complex pipeline configuration, one-way access and an unknown weld shape do not allow us to use the standardized test procedures. Radiographic control data showed the presence of unexpressed extended discontinuities similar to lack of fusion. The use of ultrasonic testing with a linear array is considered to improve the reliability and efficiency of testing of the circumferential welds. The study implied selection of the optimal scanning modes, obtaining of a set of acoustic images of defects in welded joints of the tested samples using a 16-element ultrasonic linear array. Practical testing was performed on austenitic welded joints of WWR-K pipelines with a non-metallic coating. The main problems of pipeline testing, that require further improvement, were the low scanning speed, the impossibility of using the built-in weld model for interpretation and determination of the true size of defects. In general, the work results showed a fairly good detection of root defects and an assessment of their conditional sizes using the phased array technology.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ультразвуковой контроль</kwd><kwd>радиография</kwd><kwd>сварной шов</kwd><kwd>аустенит</kwd><kwd>технология фазированных решеток</kwd><kwd>реактор ВВР-К</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ultrasonic testing</kwd><kwd>weld</kwd><kwd>austenite</kwd><kwd>phased array technology</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено при финансовой поддержке Министерства энергетики Республики Казахстан (грант № BR09158958) и Министерства науки и высшего образования Республики Казахстан (грант № BR10965174).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">ISO 18563 (parts 1, 2, 3) Non-destructive testing – Characterization and verification of ultrasonic phased array equient. https://www.iso.org/standard/62896.html (дата обращения: 02.08.2021).</mixed-citation><mixed-citation xml:lang="en">ISO 18563 (parts 1, 2, 3) Non-destructive testing – Characterization and verification of ultrasonic phased array equient. https://www.iso.org/standard/62896.html (date of access: 02.08.2021).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">СТ РК ISO 19285–2019 Контроль неразрушающий сварных соединений Ультразвуковой контроль фазированными решетками Уровни приемки. 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