title: ÐÑÐµÐ½ÐºÐ° Ð´ÐµÐ³ÑÐ°Ð´Ð°ÑÐ¸Ð¸ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð¼ÐµÑÐ°Ð»Ð»Ð° ÑÐ²Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ñ Ð¿ÐµÑÐµÑ Ð¾Ð´Ð½Ð¸ÐºÐ° Ð³Ð»Ð°Ð²Ð½Ð¾Ð³Ð¾ ÑÐ¸ÑÐºÑÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð½Ð°ÑÐ¾ÑÐ° ÐÐÐ­Ð -1000 Ð² Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼Ð¾ÑÑÐ¸ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ð¸ Â«ÑÐµÑÑ Ð¿ÐµÑÐµÐ´ ÑÐ°Ð·ÑÑÑÐµÐ½Ð¸ÐµÐ¼Â»
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: Assessment of the properties degradation o for the metal of the welded joints of the adapter for the main circulation pump of WWER-1000 for substantiation of the "leak before break" concept applicability
Creators: name: Ð¢Ð°ÑÐ°ÑÐµÐ½ÐºÐ¾, ÐÐºÐ°ÑÐµÑÐ¸Ð½Ð°
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: 2024
Subjects: Ð¯Ð´ÐµÑÐ½ÑÐµ ÑÐµÐ°ÐºÑÐ¾ÑÑ Ð²Ð¾Ð´Ð¾-Ð²Ð¾Ð´ÑÐ½ÑÐµ
ÐÐ°ÑÐ¾ÑÑ ÑÐ¸ÑÐºÑÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐµ
ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ðµ ÑÑÐ°ÑÐµÐ½Ð¸Ðµ
Ð´ÐµÐ³ÑÐ°Ð´Ð°ÑÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ²
ÑÐ´Ð²Ð¸Ð³ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ñ ÑÑÐ¿ÐºÐ¾ÑÑÐ¸
thermal aging
properties degradation
ductile-to-brittle transition temperature

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ Ð½Ð° Ð¼Ð°ÑÐµÑÐ¸Ð°Ð» ÑÐ²Ð°ÑÐ½ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹ Ð¿ÐµÑÐµÑÐ¾Ð´Ð½Ð¸ÐºÐ¾Ð² Ð³Ð»Ð°Ð²Ð½Ð¾Ð³Ð¾ ÑÐ¸ÑÐºÑÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð½Ð°ÑÐ¾ÑÐ° ÑÐµÐ°ÐºÑÐ¾ÑÐ¾Ð² ÑÐ¸Ð¿Ð° ÐÐÐ­Ð -1000 Ð¸ Ð¾ÑÐµÐ½ÐºÐµ Ð¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð½Ð° Ð±Ð°Ð·Ðµ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸, Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑÑÑÐµÐ¹ ÑÐµÐ°Ð»ÑÐ½ÑÐµ ÑÑÐ»Ð¾Ð²Ð¸Ñ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ½Ð°Ð»Ð¸Ð· Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½Ð¾Ð¹ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ð½Ð° Ð³Ð»Ð°Ð²Ð½ÑÐµ ÑÐ¸ÑÐºÑÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð½Ð°ÑÐ¾ÑÑ ÑÐµÐ°ÐºÑÐ¾ÑÐ¾Ð² ÑÐ¸Ð¿Ð° ÐÐÐ­Ð -1000 Ð¸ Ð²ÑÐ±Ð¾Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ Ð´Ð»Ñ Ð¸Ð·Ð³Ð¾ÑÐ¾Ð²Ð»ÐµÐ½Ð¸Ñ Ð¸Ð¼Ð¸ÑÐ°ÑÐ¾ÑÐ¾Ð² ÑÐ²Ð°ÑÐ½ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð°Ð¼. 2. ÐÑÐ±Ð¾Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÑÑÐºÐ¾ÑÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ, Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑÑÑÐµÐµ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐ°Ð±Ð¾ÑÐ¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑ Ð² ÑÐµÑÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ½Ð¾Ð³Ð¾ Ð¸ Ð¿ÑÐ¾Ð´Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ¾ÐºÐ° ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð². 3. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð¸ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ°Ð·ÑÑÑÐµÐ½Ð¸Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° (ÑÐ´Ð²Ð¸Ð³Ð° ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ ÑÑÑÐ¿ÐºÐ¾ÑÑÐ¸ Ð¸ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð²ÐµÑÑÐ½ÐµÐ³Ð¾ ÑÐµÐ»ÑÑÐ° ÑÐµÑÐ¸Ð°Ð»ÑÐ½ÑÑ ÐºÑÐ¸Ð²ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ°Ð·ÑÑÑÐµÐ½Ð¸Ñ) Ð¸Ð¼Ð¸ÑÐ°ÑÐ¾ÑÐ¾Ð² ÑÐ²Ð°ÑÐ½ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹ Ð² Ð¸ÑÑÐ¾Ð´Ð½Ð¾Ð¼ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ð¸ Ð¸ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¸ Ð¾ÑÑÑÐ¿ÑÐµÐ½Ð½Ð¾Ð¼ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ð¸. 4. ÐÑÐµÐ½ÐºÐ° Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð½Ð° ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð¼ÐµÑÐ°Ð»Ð»Ð° ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÑÐ²Ð°ÑÐ½ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ½Ð¾Ð¼Ñ Ð¸ Ð¿ÑÐ¾Ð´Ð»ÐµÐ½Ð½Ð¾Ð¼Ñ ÑÑÐ¾ÐºÑ ÑÐ»ÑÐ¶Ð±Ñ Ð³Ð»Ð°Ð²Ð½Ð¾Ð³Ð¾ ÑÐ¸ÑÐºÑÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð½Ð°ÑÐ¾ÑÐ° ÐÐÐ­Ð -1000. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð² Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼Ð¾ÑÑÐ¸ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ð¸ Â«ÑÐµÑÑ Ð¿ÐµÑÐµÐ´ ÑÐ°Ð·ÑÑÐ²Ð¾Ð¼Â» Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¼Ð¸Ð½Ð¸Ð¼Ð°Ð»ÑÐ½ÑÐµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° ÑÐ²Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ñ, Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ ÑÐ´Ð²Ð¸Ð³ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ ÑÑÑÐ¿ÐºÐ¾ÑÑÐ¸ Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ Ð½Ðµ Ð¿ÑÐµÐ²ÑÑÐ¸Ñ 70Â°Ð¡. ÐÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÐ¹ Ð¿Ð¾Ð´ÑÐ¾Ð´ Ð¼Ð¾Ð¶ÐµÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÑÑÑÑ Ðº ÐºÐ¾Ð½ÐºÑÐµÑÐ½ÑÐ¼ ÐÐ¦Ð Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐ¸Ñ ÑÐ½ÐµÑÐ³Ð¾Ð±Ð»Ð¾ÐºÐ¾Ð² ÐÐ­Ð¡ Ñ ÐÐÐ­Ð -1000, Ð¸ Ð¿ÑÐ¸ Ð¿Ð¾Ð´Ð±Ð¾ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð¸Ð¼Ð¸ÑÐ°ÑÐ¾ÑÐ°, ÑÐ¾ÑÑÐ°Ð² ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð±ÑÐ´ÐµÑ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¾Ð²Ð°ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ ÑÐµÐ°Ð»ÑÐ½ÑÑ ÑÐ²Ð°ÑÐ½ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹, Ð¼Ð¾Ð¶ÐµÑ Ð¾Ð±ÐµÑÐ¿ÐµÑÐ¸ÑÑ Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¾ÑÐµÐ½ÐºÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ Ñ Ð¼ÐµÐ½ÑÑÐ¸Ð¼ ÐºÐ¾Ð½ÑÐµÑÐ²Ð°ÑÐ¸Ð·Ð¼Ð¾Ð¼.
description: The work is devoted to the investigation of the influence of thermal aging on the material of welded joints of main circulation pump adapters of WWER-1000 type reactors and assessment of their properties on the basis of thermal treatment modeling real operating conditions. The objectives that were addressed in the study were: 1. Analysis of normative documentation for main circulation pumps of WWER-1000 type reactors and selection of materials for manufacturing of simulators of welded joints corresponding to prototypes. 2. Selection of accelerated thermal aging parameters, modeling the effect of operating temperatures during the design and extended service life of the considered elements. 3. Study of mechanical properties and material fracture resistance characteristics (shift of critical brittleness temperature and decrease of upper shelf of serial fracture work curves) of simulated welded joints in the initial condition and thermally embrittled condition. 4. Assessment of influence on metal properties of the considered welded joints of thermal aging corresponding to the designed and extended service life of the WWER-1000 main circulation pump. As a result, to ensure the applicability of the concept of âleak before breakâ, the minimum values of the strength characteristics of the welded joint material were determined, and it was shown that the ductile-to-brittle transition temperature as a result of thermal aging will not exceed 70Â°Ð¡. The proposed approach can be applied to specific MCP of operating NPP power units with WWER-1000, and at selection of the simulator material, the composition of which will correspond to the material of real welded joints, can provide an individualized assessment of the effect of thermal aging with less conservatism.