I do not claim to be an expert in this new technology My knowledge limited to attending a Technical Toolbook class in Houston, Texas on this subject. I will post useful internet presentations on this topic as I find them in this blog posting.
Evaluation of Pipes Using Long-Range Guided Wave Ultrasonics: Background and Recent Advances
http://www.laspe.org/pdf/ForumPresentationDec13-11(S-Sharghi).pdf
Sunday, November 25, 2012
Useful Presentation on Natural Gas Pipeline SCC Issue
I found this internet based presentation useful in my preparation for a smart pig presentation for the NACE International Los Angeles section. You can view it here.
Russian SCC ILI (Smart Pig) Technology
When I worked for Chevron Pipeline, I attended a ILI (Inline Inspection) seminar in Sandi Arabia as a representative of Chevron. On the way back to the USA, I stopped in Karlsrue, Germany to visit the Pipetronix research center where crack detection smart pigs were developed for inspection of Russian pipelines. I believed that crack detection ILI tools would soon be required in the USA pipeline inspection market. Due to the recent Enbridge pipeline rupture in Michigan due to SCC (Stress Corrosion Cracking) and the questions raised about the accuracy of the smart pigs used on that pipeline, I decided to research how much crack detection technology has improved in Russia since my visit to Germany.
The information posted in this blog article comes completely from Russia. The national natural gas pipeline operator in Russia found TFI MFL tools sufficient to locate near neutral SCC colonies in their pipelines. The Argentina national natural gas operator used Russian TFI MFL tools to inspect their pipelines for SCC colonies and found the smart pigs unable of properly detecting and sizing classic (high pH) SCC colonies. The Argentina pipeline operator developed EMAT smart pigs for inspection of their pipelines. The Russians modified their TFI MFL tools to have Argentinian developed EMAT technology to improve detection and sizing of SCC colonies.
Attached is information on the existing Russian smart pigs for finding corrosion and crack defects in natural gas pipelines. The information is posted without comment.
Final California PUC Report on San Bruno Incident
The final report on the San Bruno explosion and fire and be viewed here.
Saturday, November 24, 2012
Final NSTB Report on Enbridge Spill - Marshall MI
The NSTB final report on the Enbridge spill near Marshall MI can be viewed here.
California PUC Hydrostatic Testing Symposium
California PUC In-Line Inspection Symposium
On 24 June 2011, the California Public Utilities Commission had a "In-Line Inspection Symposium. The presentations given at this event can be viewed here.
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