Corrosion and mechanical strength of welded joints of downcomers for RBMK reactors

In the process of operation of RBMK reactors damage took place on welded pipings produced from austenitic stainless steel of the type 08X18H10T. The inspection of damaged sections in pipings has shown that in most cases crack-like defects were of corrosion and mechanical character. This paper consid...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1999-04, Vol.76 (5), p.299-307
Main Authors: Timofeev, B.T., Karzov, G.P., Gorbakony, A.A., Nikolaev, Yu.K.
Format: Article
Language:English
Subjects:
Corrosion
Corrosion factor
Crystal defects
Inspection
Intercrystalline stress corrosion cracking
Metallography
Stainless steel
Strength of materials
Stress corrosion cracking
Welded joints
Welded steel structures
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Summary:In the process of operation of RBMK reactors damage took place on welded pipings produced from austenitic stainless steel of the type 08X18H10T. The inspection of damaged sections in pipings has shown that in most cases crack-like defects were of corrosion and mechanical character. This paper considers in detail the reasons for the damage appearance and their development for this type of welded joints of downcomers ∅325×16 mm, which were fabricated from austenitic stainless steel using TIG and MAW welding methods.
ISSN:0308-0161
1879-3541
DOI:10.1016/S0308-0161(99)00005-8