A Mechanics-Based Analysis of Stress-Corrosion Cracking of Line-Pipe Steel in a Carbonate-Bicarbonate Environment

Author(s):  
BN Leis ◽  
WJ Walsh
CORROSION ◽  
1995 ◽  
Vol 51 (2) ◽  
pp. 91-96 ◽  
Author(s):  
A. K. Pilkey ◽  
S. B. Lambert ◽  
A. Plumtree

Author(s):  
Toby Fore ◽  
Stefan Klein ◽  
Chris Yoxall ◽  
Stan Cone

Managing the threat of Stress Corrosion Cracking (SCC) in natural gas pipelines continues to be an area of focus for many operating companies with potentially susceptible pipelines. This paper describes the validation process of the high-resolution Electro-Magnetic Acoustical Transducer (EMAT) In-Line Inspection (ILI) technology for detection of SCC prior to scheduled pressure tests of inspected line pipe valve sections. The validation of the EMAT technology covered the application of high-resolution EMAT ILI and determining the Probability Of Detection (POD) and Identification (POI). The ILI verification process is in accordance to a API 1163 Level 3 validation. It is described in detail for 30″ and 36″ pipeline segments. Both segments are known to have an SCC history. Correlation of EMAT ILI calls to manual non-destructive measurements and destructively tested SCC samples lead to a comprehensive understanding of the capabilities of the EMAT technology and the associated process for managing the SCC threat. Based on the data gathered, the dimensional tool tolerances in terms of length and depth are derived.


ScienceRise ◽  
2019 ◽  
Vol 1 (9-10) ◽  
pp. 17-27
Author(s):  
Lyudmila Nyrkova ◽  
Anatoliy Rybakov ◽  
Sergey Mel’nychuk ◽  
Svitlana Osadchuk

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