Published 2000 | Version v1
Miscellaneous Metadata-only

Effect of sensitization degree of Du-300 pipelines welded joints on RBMK RF Mafic working capacity

Creators

  • 1. TsNII KM Prometej, Sankt-Peterburg (Russian Federation)

Description

The influence of structure, processing and operational factors on operational capability of Du-300 pipeline welded joints of steel type 08Kh18N10T in a multiple forced circulation coolant circuit is analyzed. It is stated that the time to crack initiation at standard water chemistry (WCh) is mainly dictated by the quality of the welded joint, primarily by maximal initial degree of sensitization for a near-weld zone (NWZ) of root of penetration. The WCh (oxygen concentration) has a pronounced effect on crack initiation under conditions of intergranular stress corrosion as well as on crack propagation rate only when the degree of sensitization in NWZ metal of root of joint and across the thickness of pipe exceeds 50 %

Abstract (Russian)

Проведен анализ влияния конструкционных, технологических и эксплуатационных факторов на работоспособность сварных соединений трубопроводов Ду-300 контура многократной принудительной циркуляции из стали марки 08 Х18Н10Т. Установлено, что время до инициирования трещины при штатном водно-химическом режиме (ВХР) орпеделяется в основном качеством сварного соединения, главным образом максимальной исходной степенью сенсибилизации металла околошовной зоны (ОШЗ) корня сварного соединения. ВХР (содержание кислорода) оказывает существенное влияние на процесс инициирования трещины межкристаллитным коррозионным растрескиванием под напряжением и на скорость ее развития только при степени сенсибилизации металла ОШЗ в корне сварного соединения и по толщине стенки трубы превышающей 50 %
Part of:
Proceedings of the sixth international conference on material issues in design, manufacturing and operation of nuclear power plants equipment. Volume 2

Additional details

Additional titles

Original title (Russian)
Влияние степени сенсибилизации сварных соединений трубопроводов Ду-300 на работоспособност' KMPTs RU RBMK

Publishing Information

Imprint Place
St. Petersburg (Russian Federation)
Imprint Title
Proceedings of the sixth international conference on material issues in design, manufacturing and operation of nuclear power plants equipment. Volume 2
Imprint Pagination
402 p.
Journal Page Range
p. 193-203
Report number
INIS-RU--453

Conference

Title
6. international conference on material issues in design, manufacturing and operation of nuclear power plants equipment
Original Conference Title
Shestaya mezhdunarodnaya konferentsiya: Problemy materialovedeniya pri proektirovanii, izgotovlenii i ehkspluatatsii oborudovaniya AEhS
Dates
19-23 Jun 2000
Place
St. Petersburg (Russian Federation)

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
33004630
Subject category
S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CRACKS; EFFICIENCY; HEAT AFFECTED ZONE; INTERGRANULAR CORROSION; LWGR TYPE REACTORS; PIPELINES; POWER REACTORS; STEEL-CR18NI10TI; STRESS CORROSION; WATER CHEMISTRY; WELDED JOINTS
Descriptors DEC
ALLOYS; AUSTENITIC STEELS; CARBON ADDITIONS; CHEMICAL REACTIONS; CHEMISTRY; CHROMIUM ALLOYS; CHROMIUM-NICKEL STEELS; CORROSION; CORROSION RESISTANT ALLOYS; GRAPHITE MODERATED REACTORS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINTS; MATERIALS; NICKEL ALLOYS; REACTORS; STAINLESS STEELS; STEELS; TITANIUM ADDITIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; WATER COOLED REACTORS; ZONES

Optional Information

Notes
4refs., 4 figs. Imprint:Trudy shestoj mezhdunarodnoj konferentsii. Problemy materialovedeniya pri proektirovanii, izgotovlenii i ehkspluatatsii oborudovaniya AEhS. Tom 2