Analysis of failed stainless steel pipe

Suresh Kumar, M and Sujata, M and Madan, M and Venkataswamy, MA and Bhaumik, SK (2006) Analysis of failed stainless steel pipe. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A failed stainless steel pipe from a hydro cracking reactor was analyzed. Examination revealed that the pipe had failed by chloride induced stress corrosion cracking (SCC). Evidences suggest that the insulation material (glass wool) was the source of chlorine. The chlorine present in the glass wool had resulted in pitting corrosion in the protective layer of stainless steel foil. Once the protective layer was perforated, chlorine ion could easily migrate to the underlying hot surface of the stainless steel pipe. A detailed analysis of the failure is presented in this report. A few recommendations are also suggested to prevent recurrence of similar failure.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Stainless steel pipe;stress corrosion cracking;chlorides;thermal insulation
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 11 Aug 2011 15:59
Last Modified: 11 Aug 2011 15:59
URI: http://nal-ir.nal.res.in/id/eprint/9867

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