Global Nuclear Safety
National Research Nuclear University "MEPhI"
online version: ISSN 2499-9733
print version: ISSN 2305-414Х
2016-4(21)
Design, manufacturing and commissioning of nuclear industry equipment
| Article Name | Operational Reliability Increase of Welded Connections of Steam Generators for PWR Reactor Installations |
|---|---|
| Authors | N.N. Podrezov*(1), S.A. Tomilin *(2), V.V. Shishov**(3) |
| Address | * Volgodonsk Engineering Technical Institute the branch of National Research Nuclear University «MEPhI», |
| Abstract | A number of the problem seams reducing operational reliability of product exists in a design of PGV-1000 and PGV-1000M steam generators for pressurized water reactor installations. The special attention is required by ring seams № 111-1 and № 111-2 of welding of cold and hot collectors to Du 1200 branch pipe. These collectors work in the conditions of progressing stress corrosion that sometimes leads to loss of their constructional durability in 5 – 25 years after start-up of reactor installations. In work the technology of welding of the specified seams at the Atommash the branch of JSC AEM-technology in Volgodonsk is considered. Production measures which realization is directed to increase in a technological welding of the considered seams for the purpose of level reduction of residual welding tension in the critical zone are proposed. A critical zone is considered to be transition zone from collector "pocket" to Du 1200 branch pipe according to Technique of assessment of service life of the heat carrier welding collector knot to the PGV-1000 steam generator case. |
| Keywords | steam generator, welding connection, welded seam defects, residual welding tension, operational reliability |
| Language | Russian |
| References | [1] Dub A.V., Durynin V.A., etс. Razrabotka metodik ultrazvukovogo kontrolya i opredeleniya rabotosposobnosti uzla privarki kollektora k parogeneratoru PGV-1000M [Development of techniques of ultrasonic control and definition of welding knot operabilityof a collector to the PGV-1000M steam generator]. Tekhnicheskaya diagnostika i nerazrushayushchiy control [Technical diagnostics and nondestructive control], 2014, №4, ISSN 0235-3474, pp. 36–51. (in Russian) [2] Getman A.F., Usanov A.I., Lukasevich B.I., Tutnov A.A., Pasmanik L.A., Smirnov V.A., Kamyshev A.V. Prichiny povrezhdeniy svarnykh shvov №111 PGV-1000 i predlozheniya po ikh ustraneniyu [Damage reasons of welded seams № 111 PGV-1000 and offer on their elimination]. Available at: http://www.gidropress.podolsk.ru/files/proceedings/seminar8/documents/sgpg2010-017.pdf (in Russian) [3] Doronin Yu.V., Podrezov N.N. Neobkhodimost formalizatsii ponyatiya svarivaemosti v proizvodstve izdeliy AES [Need of formalization of welding concept for manufacturing of the NPP products]. Globalnaya yadernaya bezopasnost [Global nuclear safety], 2014, №3(12), ISSN 2305-4141Х, pp. 26–30. (in Russian) |
| Papers | 22 - 26 |
| URL Article | URL Article |
| Open Article |