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Products tagged with 'rust creepage'

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Picture for Accelerated Offshore Coating Performance Testing
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Accelerated Offshore Coating Performance Testing

Product Number: 51317--9134-SG
ISBN: 9134 2017 CP
Author: Benjamin Chang
Publication Date: 2017
$20.00

Offshore is a very corrosive environment with a high corrosion rate. The offshore coating service life is relatively short and extremely expensive to apply maintenance coatings onsite.  A new accelerated coating corrosion test method is proposed.
Picture for Critical Review of ISO 12944-9 and AMPP TM21612 Coating Qualification Standards Using Field Data to Compare
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Critical Review of ISO 12944-9 and AMPP TM21612 Coating Qualification Standards Using Field Data to Compare

Product Number: 51324-20751-SG
Author: Andy Bodington; Arturo Ruiz-Aparicio; Colin Murdoch; Benjamin T. A. Chang
Publication Date: 2024
$40.00
The most widely accepted international standards for the prequalification of offshore coatings are ISO 12944-9 and AMPP TM21612. The two laboratory test standards are trying to simulate the offshore service conditions, but the offshore regions around the world are in quite different environmental conditions which may be more or less severe than the laboratory test conditions. Thus, it is very likely to see poor correlation between the laboratory and the field results. However, it is essential that a reliable test standard duplicates the field major failure modes and generates a correct performance ranking among candidate coating systems. Therefore, facility owners can comfortably select proper coating systems and coating manufacturers can be guided to improve their coating formulations. Field exposure testing of three commercial coating systems applied on panels and placed in three different locations across the world was conducted. Testing of these same three commercial coating systems was also conducted in the laboratory using AMPP TM21612. Comparison testing was also done to compare the failure modes and rust creepage rates of constant salt fog testing (used in ASTM B117, and in one of the cycles in ISO 12944-9) versus wet/dry cyclic salt fog testing (used in one of the cycles in AMPP TM21612). In this paper a comparison is made between the test methods of these standards and correlation with the field test results.
Decontamination Chemical Compatibility with Protective Coatings
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Decontamination Chemical Compatibility With Protective Coatings

Product Number: 51322-18153-SG
Author: Sophia Xiaoxia Zhu, Benjamin T. A. Chang
Publication Date: 2022
$20.00

Most of atmospheric coatings and tank linings for offshore maintenance are routinely applied on rusted steel after dry abrasive blasting.  It is well known that the salt contamination on rusted steels cannot be completely removed by dry abrasive blasting alone.  Residual salt contamination, which is hidden in the corrosion pits, is difficult to remove mechanically.  Depending on the rust severity, the residual salt content on the dry abrasive blasted steel surface can be in the range of 5-65 μg/cm2.  Too much residual salt contamination can be detrimental to coating performance.  It could cause coating blistering, adhesion degradation, and under film corrosion which will result in a shorter service life, particularly in immersion service such as pipeline coatings or tank linings.  Recently wet abrasive blasting (WAB) has been used as the surface preparation in conjunction with the decontamination chemicals.
Picture for Offshore Atmospheric Coating Performance Evaluation Test Standards - NACE Vs. ISO
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Offshore Atmospheric Coating Performance Evaluation Test Standards - NACE Vs. ISO

Product Number: 51321-16902-SG
Author: Sai P. Venkateswaran; Andy Bodington; Tim Bieri; Benjamin T. A. Chang
Publication Date: 2021
$20.00
Picture for Rust Creepage Mechanism for Offshore Atmospheric Coatings
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Rust Creepage Mechanism for Offshore Atmospheric Coatings

Product Number: 51323-18754-SG
Author: Benjamin T. A. Chang
Publication Date: 2023
$20.00

The service life of current offshore platform coatings are normally less than 10 years. It is very expensive ($100/ft2) to rehabilitate the offshore platform coatings in the field. Therefore, facility owners are very anxious to select the long-life coatings. The candidate coatings are normally tested in the lab following the ISO 12944-91 or the AMPP TM216122 standard.
Picture for SSPC-PA 16-2022, Method for Evaluating Scribe Undercutting on Coated Steel Test Panels Following Corrosion Testing
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SSPC-PA 16-2022, Method for Evaluating Scribe Undercutting on Coated Steel Test Panels Following Corrosion Testing

Product Number: SSPC-PA 16-2022
Publication Date: 2022
$109.00

This standard allows the user to determine average and observed maximum undercutting values, as well as the frequency of the maximum undercutting on coated steel test panels scribed in accordance with Section 6 of ASTM D1654 using parallel, 100 mm (~4 in) scribes. The standard includes requirements for data collection, analysis, and reporting.

This standard is applicable for evaluation of most types of protective coatings for use on steel. This standard is not applicable to evaluation of thermal sprayed metals and ceramic coatings, hot-dip and electro-coated metal coatings, and tapes.
The Most Recent Test Results of One-Coat Systems Applicable to Steel Bridge Structures
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The Most Recent Test Results of One-Coat Systems Applicable to Steel Bridge Structures

Product Number: 41209-492-SG
Author: Seung-Kyoung Lee, Yuan Yao, Shuang-Ling Chong
Publication Date: 2009
$20.00

A two-year Federal Highway Administration (FHWA) in-house study was launched in November 2006 to evaluate various coating materials that may be applied as one-coat systems to steel bridges. A total of eight test materials plus two control systems, a 3-coat and a 2-coat, were applied over near-white steel test panels (SSPC-SP10). Their performance has been evaluated for 20 months using electrochemical impedance spectroscopy, surface failure characterizations, rust creepage at scribe, pull-off adhesion, and changes of color and gloss.
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