Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

Methodology For The Evaluation Of Batch Corrosion Inhibitor Films And Their Integrity

Picture for Methodology For The Evaluation Of Batch Corrosion Inhibitor Films And Their Integrity
Available for download
Product Number: 51321-16632-SG
Author: Winston Mosher/ Tamer Crosby/ Tony Lam
Publication Date: 2021
$20.00
$20.00
$20.00

Proper maintenance of pipelines reduces the occurrences of failures due to internal corrosion to a remarkable degree. Primarily, the two methods employed in maintaining a pipeline are mechanical cleaning (pigging) and chemical treatment, (corrosion inhibitors & biocides) often used in combination. The technique known as batch filming uses a “pill” of concentrated chemical contained between two pipeline pigs; a lead pig and a filming pig (referred to as a pig “train”). In theory, the filming pig allows a small volume of chemical to continuously bypass the rear of the filming pig as the train moves down the pipe. This method is intended to coat the inner surface of the pipeline in a uniform layer of protective corrosion inhibitor. In practice it is very difficult for operators to determine the consistency of the coverage, and the thickness of the film deposited by a batch filming procedure. It is also very challenging to determine how long the chemical film can remain effective after it has been applied, especially if subsequent cleaning pigs are used as part of the maintenance schedule. To replicate the batch filming process at a pilot scale, a flow loop was modified with the capabilities of launching multiple 4” (10 cm) diameter pipeline pigs. The discussed methodology enabled researchers to batch film a pipe and analyze the thickness/coverage of the coating while varying specific parameters (contact time, pig design, chemical type and dilution ratio). The method also allowed for the observation of the effect of various cleaning pigs on the integrity of the applied film. The test scheme may provide valuable information to pipeline operators and chemical vendors about the use of batch filming and its reliability, as well as providing design insight to pig manufacturers.

Key words: Pigging, pipeline integrity, pipeline maintenance, inhibitors, Filming pigs

Proper maintenance of pipelines reduces the occurrences of failures due to internal corrosion to a remarkable degree. Primarily, the two methods employed in maintaining a pipeline are mechanical cleaning (pigging) and chemical treatment, (corrosion inhibitors & biocides) often used in combination. The technique known as batch filming uses a “pill” of concentrated chemical contained between two pipeline pigs; a lead pig and a filming pig (referred to as a pig “train”). In theory, the filming pig allows a small volume of chemical to continuously bypass the rear of the filming pig as the train moves down the pipe. This method is intended to coat the inner surface of the pipeline in a uniform layer of protective corrosion inhibitor. In practice it is very difficult for operators to determine the consistency of the coverage, and the thickness of the film deposited by a batch filming procedure. It is also very challenging to determine how long the chemical film can remain effective after it has been applied, especially if subsequent cleaning pigs are used as part of the maintenance schedule. To replicate the batch filming process at a pilot scale, a flow loop was modified with the capabilities of launching multiple 4” (10 cm) diameter pipeline pigs. The discussed methodology enabled researchers to batch film a pipe and analyze the thickness/coverage of the coating while varying specific parameters (contact time, pig design, chemical type and dilution ratio). The method also allowed for the observation of the effect of various cleaning pigs on the integrity of the applied film. The test scheme may provide valuable information to pipeline operators and chemical vendors about the use of batch filming and its reliability, as well as providing design insight to pig manufacturers.

Key words: Pigging, pipeline integrity, pipeline maintenance, inhibitors, Filming pigs

Product tags
Also Purchased
Picture for 01028 BATCH INHIBITOR FILM DISTRIBUTION STUDIES:
Available for download

01028 BATCH INHIBITOR FILM DISTRIBUTION STUDIES: CORRELATION OF FIELD DATA WITH LABORATORY RESULTS

Product Number: 51300-01028-SG
ISBN: 01028 2001 CP
Author: Magdy Girgis, Harley Fear, Josef Bojes and Mike Maddison
$20.00
Picture for 04368 Enhancing Batch Chemical Efficiency: Field
Available for download

04368 Enhancing Batch Chemical Efficiency: Field Trail Results on Inhibitor Transport of Extended Release Corrosion Inhibitors

Product Number: 51300-04368-SG
ISBN: 04368 2004 CP
Author: Samuel Campbell, Donald W. Stegmann, and Richard D. Schofield, Baker Petrolite
$20.00
Picture for 04402 Hydrodynamic and Flow Effects on Corrosion
Available for download

04402 Hydrodynamic and Flow Effects on Corrosion Inhibition

Product Number: 51300-04402-SG
ISBN: 04402 2004 CP
Author: Rudolf H. Hausler, Corro Consulta; Guenter Schmitt, Iserlohn University of Applied Science
$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