Особливості підходів до переоцінки кваліфікаційного терміну обладнання енергоблоків атомних станцій на «жорсткі» умови навколишнього середовища внаслідок аварій

• Дата: 2025
• Автори: Shugaylo, O-r, Pavliv, Ye., Sakhno, O., Bozhko, O., Khamrovska, L., Lietkova, N.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: State Scientific and Technical Center for Nuclear and Radiation Safety 2025
• Онлайн доступ: https://nuclear-journal.com/index.php/journal/article/view/1291
• Назва журналу: Nuclear and Radiation Safety

Equipment qualification activities are one of the main components of the overall NPP safety assurance system. Moreover, in the conditions of long-term operation of Ukrainian NPP power units, the issue of extending (re-evaluating) the equipment qualification life. The paper considers possible factors of influence that lead to equipment aging and, accordingly, should be taken into account when predicting its qualification life. In particular, the influence of environmental parameters (temperature, radiation exposure) on the technical condition is significant for electrical equipment, equipment of control and management systems, and critical components of thermomechanical equipment due to the presence in these elements of electrical circuits and/or the use materials that are sensitive to degradation and, accordingly, aging under the influence of these parameters. Approaches to the implementation of technical measures to extend the qualification life of equipment of NPP power units have been formed depending on the type of equipment, the used structural materials (taking into account their degradation) and the nature of the impact on the equipment.