title: ÐÐ¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÑÐµÐ¿Ð»Ð¾Ð¾Ð±Ð¼ÐµÐ½Ð½Ð¸ÐºÐ° Ð°Ð²Ð°ÑÐ¸Ð¹Ð½Ð¾Ð³Ð¾ Ð²ÑÐ²Ð¾Ð´Ð° ÑÐµÐ¿Ð»Ð¾Ð½Ð¾ÑÐ¸ÑÐµÐ»Ñ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¿Ð¾Ð´Ð¿Ð¸ÑÐºÐ¸ Ð¸ Ð±Ð¾ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð¾ÑÐµÑÐµÐ´Ð¸ ÐÐµÐ½Ð¸Ð½Ð³ÑÐ°Ð´ÑÐºÐ¾Ð¹ ÐÐ­Ð¡
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: Modernization of the design of the heat exchanger for the emergency outlet of the coolant of the make-up system and boron control of the second stage of the Leningrad NPP
Creators: name: ÐÑÑÐ¸Ð½, ÐÐ¸ÑÐ°Ð¸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: cÐ¸ÑÑÐµÐ¼Ð° Ð¿Ð¾Ð´Ð¿Ð¸ÑÐºÐ¸ Ð¸ Ð±Ð¾ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
ÑÐµÐ¿Ð»Ð¾Ð¾Ð±Ð¼ÐµÐ½Ð½Ð¸Ðº Ð°Ð²Ð°ÑÐ¸Ð¹Ð½Ð¾Ð³Ð¾ Ð²ÑÐ²Ð¾Ð´Ð° ÑÐµÐ¿Ð»Ð¾Ð½Ð¾ÑÐ¸ÑÐµÐ»Ñ
Ð¼Ð½Ð¾Ð³Ð¾Ð·Ð°Ñ Ð¾Ð´Ð½ÑÐµ ÑÐ¸Ð»Ð¸Ð½Ð´ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¿Ð¸ÑÐ°Ð»Ð¸
ÑÐ»Ð»Ð¸Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð´Ð½Ð¸ÑÐµ
ÑÐ»Ð°Ð½ÑÐµÐ²Ð¾Ðµ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ðµ
make-up and boron control system
heat exchanger for emergency output of heat carrier
multiple cylindrical spirals
elliptical bottom
flanged connection

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description: The purpose of this work is to modernize the design of the heat exchanger, namely, it is necessary to create a more maintainable design, since at the moment the device of the emergency coolant outlet heat exchanger available at the Leningrad NPP-2 does not allow for quick fault detection and repair, since the heat exchanger is of a non-separable design. To solve this problem, first, a strength calculation was made for the main elements of the heat exchanger (body, round flat bottom and tube sheet), and an analysis was made of a simplified 3D model of the heat exchanger, which revealed a possible cause of leaks in the tubes. After that, the following upgrade option was proposed: replacing the round flat bottom with an elliptical one to reduce wall thickness, as well as adding flange connections to create a maintainable design of the heat exchanger, which facilitates maintenance and repair of the heat exchanger during scheduled preventive maintenance. The analysis of the resulting flange connection was also carried out in the ANSYS program. Thus, in connection with the need at the moment to replace the heat exchanger of the emergency outlet of the coolant, an option was proposed to improve the design of the heat exchanger in order to create a more maintainable design.