Menu
Search
Filters
Close
Menu

Development and Implementation of a Novel Method to Remove Inorganic Zinc Coating from Low Alloy Steel

Development and Implementation of a Novel Method to Remove Inorganic Zinc Coating from Low Alloy Steel
Available for download

Inorganic zinc (IOZ) silicate coating was previously applied to partially fabricated low alloy, 21/4 Cr-1MoV, high temperature, hydrogen, reactor vessels for long-term storage corrosion protection prior to final welding and post weld heat treatment (PWHT) at 690-720°C (1274-1328°F). The need for complete coating removal to mitigate the known embrittlement and weld cracking that can occur after welding and PWHT led to the development of a novel, environmentally friendly method to remove IOZ to trace levels below 1 ppm. 

Product Number: 41215-913-SG
Author: Barry Messer, Yasir Idlibi, Sergio Vitomir
Publication Date: 2015
Industries: Test Method , Coatings , Coatings and Linings
$0.00
$20.00
$20.00

Inorganic zinc (IOZ) silicate coating was previously applied to partially fabricated low alloy, 21/4 Cr-1MoV, high temperature, hydrogen, reactor vessels for long-term storage corrosion protection prior to final welding and post weld heat treatment (PWHT) at 690-720°C (1274-1328°F). The need for complete coating removal to mitigate the known embrittlement and weld cracking that can occur after welding and PWHT led to the development of a novel, environmentally friendly method to remove IOZ to trace levels below 1 ppm. Typical blasting and etching procedures were unable to effectively remove the coating. The success of this IOZ removal method is the first-known achievement of IOZ removal to trace levels below 1 ppm. This method can be utilized in restoration projects of bridges and structural steel where abrasive blasting is not practical or environmentally unsafe. This paper discusses the chemical mechanism of this new coating remover, method of application and testing, the validation program utilizing X-Ray fluorescence (XRF) analyzer energy dispersive X-ray spectroscopy (EDX) calibration, and effective field implementation.

Inorganic zinc (IOZ) silicate coating was previously applied to partially fabricated low alloy, 21/4 Cr-1MoV, high temperature, hydrogen, reactor vessels for long-term storage corrosion protection prior to final welding and post weld heat treatment (PWHT) at 690-720°C (1274-1328°F). The need for complete coating removal to mitigate the known embrittlement and weld cracking that can occur after welding and PWHT led to the development of a novel, environmentally friendly method to remove IOZ to trace levels below 1 ppm. Typical blasting and etching procedures were unable to effectively remove the coating. The success of this IOZ removal method is the first-known achievement of IOZ removal to trace levels below 1 ppm. This method can be utilized in restoration projects of bridges and structural steel where abrasive blasting is not practical or environmentally unsafe. This paper discusses the chemical mechanism of this new coating remover, method of application and testing, the validation program utilizing X-Ray fluorescence (XRF) analyzer energy dispersive X-ray spectroscopy (EDX) calibration, and effective field implementation.

Product tags
Also Purchased
Picture for 02334 THE USE OF MULTIPLE REFERENCE...
Available for download

02334 THE USE OF MULTIPLE REFERENCE ELECTRODES IN EN MEASUREMENTS

Product Number: 51300-02334-SG
ISBN: 02334 2002 CP
Author: U. Bertocci, F. Huet, and R. P. Nogueira
Publication Date: 2002
$20.00

In order to simplify the measurement of electrochemical noise in field applications, three identical electrodes, one acting as reference electrode (RE), are often used. In this work, a measurement scheme, which employs two REs is proposed, which can reduce the error due to the RE's noise. An example of its implementation is also presented.

 
Picture for Coatings + Proceedings 2021-ALL Papers

(Pipeline, Oil & Gas) A Hot Spread Epoxy Phenolic Coating for CUI Mitigation: From Confusion to Fusi

Product Number: 30-COAT_DEC21
Author: Mike O’Donoghue / Vijay Datta / Ian Fletcher
Publication Date: 2021
$20.00

It is fair to say that maintenance in the worldwide oil and gas industry has changed dramatically over the past ten years.  Facility owners are more than ever looking to reduce shutdown times, to improve plant efficiency and to extend plant lifetimes. With this comes the increased industry understanding about corrosion under insulation (CUI) with its deleterious impact and the ongoing desire for pragmatic high performance and cost-effective coating solutions.
Comparing Multiple Weathering Techniques Among Various Coatings Chemistries
Available for download

Comparing Multiple Weathering Techniques Among Various Coatings Chemistries

Product Number: 41213-762-SG
Author: Veronica Lemmerman
Publication Date: 2013
$20.00

It was requested that exposure testing be completed on various high durability coatings products to evaluate gloss retention and color changes. Various systems were chosen to test, some with clear coats and some without. They were placed in cyclic UV/condensation testing, concentrated natural sunlight testing in Arizona, and outdoor exposure testing in South Florida. 
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