Menu
Search
Filters
Close
Menu

11091 Affect of Black Powder on Inline Inspection Accuracy

Picture for 11091 Affect of Black Powder on Inline Inspection Accuracy
Available for download
Product Number: 51300-11091-SG
ISBN: 11091 2011 CP
Author: Jaime P. Perez
Publication Date: 2011
$0.00
$20.00
$20.00
The accuracy of an inline inspection (ILI) tool such as a Magnetic Flux Leakage (MFL) is affected by the amount of black powder in the pipeline. Parameters such as the ILI tool signal strength, speed, girth weld readings, rotation, and inclination are affected resulting in inaccuracy of the ILI tool reports. The analysis of two subsequent ILI run results may also be affected due to erroneous conclusion that the corrosion depth may be getting worse when in fact the tool is only reporting more accurate readings of existing deep corrosion as the line is cleaned of black powder. Thus, field verifications of the ILI run becomes very important to determine the accuracy of the readings and the affect of the black powder. However, field verifications are an expensive exercise especially if all the reported readings must be excavated for inspection. The bottom line is that the effectiveness of the pipeline validation operation using an ILI tool becomes critical given the effect of the black powder especially if the reported data is misinterpreted.

Keywords: black powder, sales gas pipelines, moisture content, sensors lift-off, MFL run accuracy.
The accuracy of an inline inspection (ILI) tool such as a Magnetic Flux Leakage (MFL) is affected by the amount of black powder in the pipeline. Parameters such as the ILI tool signal strength, speed, girth weld readings, rotation, and inclination are affected resulting in inaccuracy of the ILI tool reports. The analysis of two subsequent ILI run results may also be affected due to erroneous conclusion that the corrosion depth may be getting worse when in fact the tool is only reporting more accurate readings of existing deep corrosion as the line is cleaned of black powder. Thus, field verifications of the ILI run becomes very important to determine the accuracy of the readings and the affect of the black powder. However, field verifications are an expensive exercise especially if all the reported readings must be excavated for inspection. The bottom line is that the effectiveness of the pipeline validation operation using an ILI tool becomes critical given the effect of the black powder especially if the reported data is misinterpreted.

Keywords: black powder, sales gas pipelines, moisture content, sensors lift-off, MFL run accuracy.
Product tags
Also Purchased
Picture for 11088 Analyses of Black Powder in Natural Gas Pipeline
Available for download

11088 Analyses of Black Powder in Natural Gas Pipeline

Product Number: 51300-11088-SG
ISBN: 11088 2011 CP
Author: Junya Yamada, Katsuyoshi Nakayama and Hidenori Kaneta
Publication Date: 2011
$20.00
Picture for 11092 Effects of Reaction Kinetics of H2S, CO2, and O2 on the Formation of Black Powder
Available for download

11092 Effects of Reaction Kinetics of H2S, CO2, and O2 on the Formation of Black Powder in Sales Gas Pipelines

Product Number: 51300-11092-SG
ISBN: 11092 2011 CP
Author: Robin Susilo, Boyd R. Davis and Abdelmounam M. Sherik
Publication Date: 2011
$20.00
Picture for 08415 Black Powder in Gas Transmission Systems
Available for download

08415 Black Powder in Gas Transmission Systems

Product Number: 51300-08415-SG
ISBN: 08415 2008 CP
Author: Abdelmounam M. Sherik, Syed R. Zaidi, Eduardo V. Tuzan, and Jaime P. Perez
Publication Date: 2008
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support