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Power Technology and Engineering

, Volume 46, Issue 5, pp 394–398 | Cite as

Estimate of the allowable dimensions of diagnosed defects in category III and IV welded pipeline joints1

  • E. A. Grin’
  • V. I. Bochkarev
Article
  • 60 Downloads

An approach for estimating the permissible dimensions of technological defects in butt welded joints in category III and IV pipelines is described. The allowable size of a welding defect is determined from the condition of compliance with the specifications on strength for a reference cross section (damaged joint) of the pipeline taking into account its weakening by a given defect.With regard to the fairly widespread discovery of technological defects in butt welded joints during diagnostics of auxiliary pipelines for thermal electric power plants, the proposed approach can be used in practice by repair and consulting organizations.

Keywords

pipeline weld joint inspection technological defect strength equivalent stress crack 

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References

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • E. A. Grin’
    • 1
  • V. I. Bochkarev
    • 1
  1. 1.JSC “All-Russia Thermal Engineering Institute” (JSC “VTI”)MoscowRussia

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