STUDY OF EXTERNAL COOLING OF STEAM GENERATOR PGV-1000M COLLECTORS POCKET WELD No 111 FOR SUPPRESSING OF STRESS CORROSION CRACKING

被引:0
|
作者
Joch, L. [1 ]
Krautschneider, R. [2 ]
机构
[1] Brno Univ Technol, Fac Mech Engn, Energy Inst, Brno 61669, Czech Republic
[2] Inst Appl Mech Brno Ltd, Brno 60200, Czech Republic
来源
ENGINEERING MECHANICS 2014 | 2014年
关键词
Fluid structure interaction; Steam generator; CFD thermal analysis; Stress corrosion cracking;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The subject of this report is to assess different rates of cooling the bottom of the collector region, specifically the outer surface of the weld JS1200 (also known as weld 111) and the surrounding area. Based on the experience from Russia (OKB Gidropress) it is possible by external cooling of the outer surface of the weld area to reduce tensile stresses in the weld and in the outer radius of collectors pockets, or even change them into compressive stresses. The presence of tensile stresses in the outer radius of collectors pocket in combination with a corrosive environment in the collectors pocket support the possibility of crack initiation and propagation mechanism of stress corrosion cracking (SCC).
引用
收藏
页码:268 / 271
页数:4
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