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Welding in the World

, Volume 56, Issue 3–4, pp 11–19 | Cite as

Assessment of the Material State of Oil and Gas Pipelines Based on the Metal Magnetic Memory Method

  • Anatoly Dubov
  • Sergey Kolokolnikov
Peer-Reviewed Section

Abstract

The paper considers the possibilities for the application of the metal magnetic memory (MMM) method for assessment of the stress-strain state (SSS) and non-destructive testing (NDT) of various-purpose gas and oil pipelines, in order to detect the segments where the development processes of fatigue damage are intensively enhanced. Based on the 100 % inspection of metal components using the MMM method, detection of all potential dangerously-affected zones — the stress concentration zones (SCZs), and the removal of these zones during repair, are carried out. Thus, there is a real opportunity to ensure the safe operation and lifetime extension of metal components based on their actual state.

IIW-Thesaurus keywords

Nondestructive testing Pipelines Stress Strain Stress distribution 

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References

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Copyright information

© International Institute of Welding 2012

Authors and Affiliations

  1. 1.Head of NDT Personnel Certification Body are both with Energodiagnostika Co. Ltd.MoscowRussian Federation

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