title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð¾Ð´Ð¾-Ð²Ð¾Ð´ÑÐ½Ð¾Ð³Ð¾ ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° ÑÐ¾ ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½ÑÐ¼ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð¼ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐ¾ÑÑÐ°Ð²Ð° Ð·Ð°Ð¼ÐµÐ´Ð»Ð¸ÑÐµÐ»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Designing a pressurized reactor with spectral shift control by changing the composition of the moderator
Creators: name: ÐÐ¾Ð½ÑÐ°Ðº, ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾Ðµ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÑÐ¶ÐµÐ»Ð°Ñ Ð²Ð¾Ð´Ð°
Ð·Ð°Ð¼ÐµÐ´Ð»Ð¸ÑÐµÐ»Ñ
Ð¾Ð±Ð¾Ð³Ð°ÑÐµÐ½Ð¸Ðµ
ÐÐÐ­Ð -1200
spectral shift control
heavy water
moderator
enrichment
VVER-1200

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description: The topic of the graduate qualification work: Â«Designing a pressurized reactor with spectral shift control by changing the composition of the moderatorÂ». This work is devoted to the study of the possibility of using heavy water as a coolant for spectral shift control of the reactor. The tasks that were solved in the paper: 1. Study of existing spectral shift control methods and the role of heavy water regulation among them. 2. Neutron-physical calculation of the reactor to investigate the possibility of using heavy water to reduce the initial enrichment of the fuel. 3. Effect of heavy water as one of the coolant components on thermal hydraulic characteristics of the reactor. 4. Development and investigation of the technological scheme for the heavy water feed. As a result of neutron-physical calculation of the reactor with spectral shift control, it has been revealed that as the coolant is diluted with heavy water, with a gradual decrease in its concentration as the fuel burns out, the effective neutron multiplication factor increases, from which one can conclude that the initial fuel enrichment can be reduced. Due to the fissile isotope production, the enrichment has been reduced by more than a factor of two, which makes it possible to save fuel substantially. In turn, the thermal-hydraulic calculation showed that heavy water has almost no effect on the removal of heat from the fuel, due to the small differences in thermal and physical properties with ordinary water.