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Picture for CUI Management Through Moisture Barrier System And Field Assessment
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CUI Management Through Moisture Barrier System And Field Assessment

Product Number: 51321-16914-SG
Author: Ahmad Raza Khan Rana; Graham Brigham; Andrew Buchanan
Publication Date: 2021
$20.00
Picture for Effect of Additives to Corrosion Inhibitor for Duplex Stainless Steel in Acidizing
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Effect of Additives to Corrosion Inhibitor for Duplex Stainless Steel in Acidizing

Product Number: 51321-16402-SG
Author: Hirotaka Mizukami/Susumu Hirano/Tsuyoshi Ooba/Ayano Yasui/Toshiyuki Sunaba/Mitsuru Uno
Publication Date: 2021
$20.00
	Picture for Evaluation of Various IMM/IC Coating Systems in Terms of Corrosion Protection
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Evaluation of Various IMM/IC Coating Systems in Terms of Corrosion Protection

Product Number: 51324-20414-SG
Author: Daigo Koshiba; Takumi Oshikawa
Publication Date: 2024
$40.00
In Oil & Gas facilities projects, coating system selection of bulk valves is challenging for EPC contractor to manage because their quantity is extensive and they are installed at each specific situation. IMM (Inert Multi Polymeric Matrix) / IC (Inorganic Copolymer) coatings, hereinafter referred to as IMM, which can be applied under various situations are anticipated to be applied for the bulk valves. Several types of IMM paints have been introduced to the market and corrosion protection performance were evaluated in this paper. Test panels of IMM coatings were prepared from five different manufacture’s brands, with variations in dry film thickness, hereinafter referred as DFT, (125µm/250µm) and with or without heat curing. Corrosion protection performance was tested by salt spray tests (720 hours, 1440 hours) and natural weathering tests (18 month), and evaluated by degree of rust, pull-off tests, and EIS (Electrochemical Impedance Spectroscopy) tests. The results of salt spray tests and natural weathering tests varied depending on each brand's product. The overall trend indicates that panels with a 250µm DFT and without heat curing panels demonstrates better corrosion protection performance rather than panels with a 125µm DFT and with heat curing. In the EIS test, some test panels showed a significant drop in impedance values at low frequency (0.1Hz) with heat curing, which may suggest a degradation in corrosion protection performance. In conclusion, it is recommended to use IMM coatings with a 250µm DFT and to be cautious when applying them at high temperature services.
Picture for Integrity Maintaining and Cost Saving Advanced CUI Detection Technique (PEC)
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Integrity Maintaining and Cost Saving Advanced CUI Detection Technique (PEC)

Product Number: MPWT19-14242
Author: Amro Hassanein, Ahmed Elsharkawi
Publication Date: 2019
$0.00

Corrosion under insulation (CUI) is a major problem for petroleum and petrochemical process industries that affects the plant mechanical integrity and attacks assets. CUI can result in sudden and hazardous leaks (safety concern), and plant shutdowns with high losses of production (economical concern).
Traditional detecting methods of CUI to cut a window in thermal insulation used to inspect visually, to measure the thickness, and then return thermal insulation back, giving high chance for water and moisture ingress, accelerating CUI, moreover big amount of scaffolding erection along with thermal insulation removal required.
SHARQ (Eastern Petrochemical Company, one of SABIC companies) is pioneer to study CUI, evaluating many Non–Destructive techniques has proven Pulsed Eddy Current (PEC) as the most effective technique in terms of integrity and cost optimization.
Considering all available techniques, all aspects studied, such as range of applications, features, and limitations, it is concluded and verified to meet our inspection plan strategy needs.
PEC does not require thermal insulation removal; optimize scaffolding erection, has a wide range of applications related to thickness, and temperature. PEC approved by international codes and standards (API) to meet RBI Meridium software requirements.
The validation study results show cost savings of more than 50% compared to traditional thickness measurement methodology, moreover it reduces EHSS (Environment, Health, Safety, and Security) negative impact reduces the probability of safety incidents due to reducing labor, man-hours, and eliminating many associated activities with potential hazard and risk.
PEC has high productivity, easily operated, and provides comprehensive and professional inspection report