Effect of TiN inclusions and vibration loads on damage of heat exchange pipes of PGV-1000 steam generators
Operational damages of heat exchange tubes (HET) in steam generators of WWER-1000 power units were studied by means of metallography and scanning electron microscopy. The crack initiation and growth mechanism was found to be associated with the combined action of non-metallic TiN inclusions in 08Kh1...
Збережено в:
| Дата: | 2022 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2022
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/195947 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Effect of TiN inclusions and vibration loads on damage of heat exchange pipes of PGV-1000 steam generators / A.S. Mitrofanov // Problems of Atomic Science and Technology. — 2022. — № 2. — С. 50-56. — Бібліогр.: 10 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Operational damages of heat exchange tubes (HET) in steam generators of WWER-1000 power units were studied by means of metallography and scanning electron microscopy. The crack initiation and growth mechanism was found to be associated with the combined action of non-metallic TiN inclusions in 08Kh18T10T steel, their drawing during pipe rolling, as well as vibration loads in HET. An explanation is given for the differences in the rates of HЕT damage at WWER-1000 and WWER-440 power units. Approaches to reducing the level of HET damage and increasing the resource capabilities of steam generators are considered. |
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