PCN – Communicating News In Protective Coatings Globally in Real-Time
Leading Source of Industry News on Protective Coatings for Oil & Gas, Pipelines, Marine and Construction
NEWSMAKERS: * ABS * Akzo Nobel * Carboline * CUI * DNV * ExcelPlas * Failure Analysis * Hempel * Jotun * International Paints * LNG * MCU * PCN * Polyguard * PPG * Seal-Healing Coatings * Wattyl
MCU Announces the Arrival of MCU Coatings in Australia & Plan to Build Coatings Manufacturing Plant in Australia (Breaking News)
Hempel Signs Purchase Agreement for Acquisition of Australia-based Wattyl Coatings
As Hempel CEO Lars Petersson explains, this step is strong platform for the company’s continuous growth strategy for South and East Asia
Hempel Hires David Hunter as Director of Marketing for North America
He will be responsible for the marketing activities in Canada, the US and Mexico
American Bureau of Shipping (ABS) Pioneers Digital Corrosion Detection to Combat Corrosion Costing Shipping up to $80bn a Year
Failure Analysis and Investigation of Protective Coatings in Mining, Marine Offshore Oil & Gas Chemical Plants, Energy Infrastructure and Bridges (Ask the Experts)
Artificial Intelligence and Algorithms Bring Drone Coating Inspection Breakthrough by DNV
Akzo Nobel Upload TDS and Application Guide for their New Epoxy Phenolic for CUI
Two-Part Epoxy Deemed Best for Pipeline in Saltwater Channel
Extending Inspection Intervals of Storage Tanks by Using State-of-the-Art Protective Coatings (Tuesday, March 30th 2021)
by Michael McGlamry (Group Product Manager – Oil & Gas at Hempel) and Fabiana Requeijo (Hempel Expert on Tank Linings)
Online Training – Corrosion Under Insulation; Fight against the Hidden Threat | Old Lessons & New Insights (26-28 May 2021)
AMI’S Global Forum for Steel Pipeline Protective Coatings Goes Virtual (4 – 6 May 2021)
Due to ongoing travel and safety concerns, AMI has decided to host the 2021 edition of the Pipeline Coating conference online.
The Pipeline Coating Virtual Summit is focused on polymeric coatings and their protection for offshore and onshore steel pipelines for the energy industries including oil, gas and water.
Invited Speakers include:
- Suresh Choudhary from SHAWCOR
- Somaieh Salehpour from SEAL FOR LIFE INDUSTRIES
- Jeffrey D. Rogozinski from SHERWIN-WILLIAMS
- Mike Surkein from SURKEIN CORROSION
- Alex Garner from LONDON CORROSION SERVICES LTD.
NEW RESEARCH IN SELF HEALING PROTECTIVE COATINGS
Preparation of Highly Efficient Self-Healing Anticorrosion Epoxy Coating by Integration of Benzotriazole Corrosion Inhibitor
External Self-Healing Coatings in Anti-corrosion Applications: A Review
Corrosion Resistance Evaluation of Self-Healing Epoxy Coating Based on Dual-Component Capsules Containing Resin and Curing Agent
Jotun Seeking Lab Technician to Test Protective Coatings
FAILURE PREVENTION OF PROTECTIVE COATINGS
15 of the Most Common Causes of Failure of Protective Coatings & the Type of Failure (from ExcelPlas 25 Years of Experience)
- Inadequate blasting and insufficient removal of mill scale from the steel leading to poor adhesion
- Use of blasting grit with soluble salt contamination leading to osmotic blistering and under film corrosion
- Oil contaminated compressed air used for blasting leading to surface contamination leading to poor adhesion and delamination of the coating
- Inadequate blast profile i.e. shallow valleys leading to poor adhesion
- Excessive blast profile i.e. high peaks leading to poor steel coverage and risk of rust-rash corrosion, particularly for low DFT coatings.
- Excessive delay between blasting and coating causing flash corrosion contamination leading to poor adhesion and corrosion cells
- Addition of too much thinner that increases the potential for porosity and pinholes in the coating. There is also an increased propensity for the formation of Bernard Cells where there are boundaries of resin rich coating, resulting in “crows feet” cracking.
- Poor mix ratio of the epoxy with the hardener leading to incomplete cure
- Inadequate mixing/stirring of the coating before application leading to poor distribution of barrier pigments leading to coating cracks and premature corrosion
- Inadequate coating specification: lack of suitable topcoat for UV sensitive epoxies leading to chalking and UV breakdown
- Inadequate curing of coatings leading to less than optimal properties of the coating with increased moisture penetration and formation of corrosion cells
- Incompatibility of coating if different paint systems are used multicoat application leading to delamination/peeling
- Poor QA leading to inadequate control of coating thickness (e.g. excessive DFT) leading to cracking of the coating due to residual stresses
- Poor QA leading to inadequate control of coating thickness: low coating thickness or missing coats can lead to poor barrier performance and premature corrosion
- Exceeding the recoat window leading to delamination of topcoat from primer coat due to blast-dust contamination or lack of interfacial adhesion.
Critical Questions for Protective Coatings for Asset Protection in Oil & Gas, LNG:
- Why is the coating not stopping corrosion?
- Why is the coating delaminating or blistering?
- Has the coating been correctly specified / applied?
- Does the coating meet the manufacturing standard, including properties such as correct hardness/cure, adhesion and thickness?
- What surface preparation and atmospheric conditions must be achieved to successfully apply the coating?
- Does the coating have any defects in it? How will these affect performance?
- Why did the coating fail? Root cause assessment.
- How can the coating be successfully repaired/remediated so that it doesn’t fail again?
ExcelPlas Labs can answer these questions
Condition Assessment of Protective Coatings – Coating Inspection & Damage Assessment
ExcelPlas Labs have been serving the gas, oil and water industries for the past 20 years within Australia, New Zealand and Oceania. The company is a major testing provider to the pipeline and LNG industry. Whether you’re an engineer, consultant, pipeline owner, pipeline operator, LNG facility or construction company, ExcelPlas Labs can conduct a range of analytical testing on protective coatings to assess their condition, integrity and durability. ExcelPlas Labs have extensive in-house coatings testing equipment such as DSC, FTIR, TGA, TMA, EIS, SOM, XRD, QUV etc.
ExcelPlas Coating Labs – The Leaders in Evaluation and Assessment of Protective Coatings
Electrochemical Impedance Spectroscopy (EIS) is a powerful and sensitive tool to detect the condition of a coated metal. This technique can generate quantitative data relating to the quality of a barrier coating and the plot of data can be used to indicate the status of coating long before any visible damage occurs. EIS can also be used as a post-evaluation tool to indicate the barrier property or any change in the coating after the test exposure, such as QUV exposure, Autoclave test, Atlas Cell test, Salt Fog or Immersion test, etc. Examination of the cross section for porosity/voids in the coating vis optical microscopy. High levels of porosity can lead to internal weakness and stress cracking (can also obtain film thickness at the same time, SEM/EDXA of the underside to look for potential contamination such as chlorides, DSC to determine Tg and residual exotherm of cure, IR for positive material identification with comparison to reference authentic material, Nitrogen Analysis for base to hardener Mix ratio.
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This newsletter is brought to you by ExcelPlas Coating Labs (http://www.excelplas.com/)
ExcelPlas Labs provides independent testing, analysis and investigation on protective coatings to prevent corrosion.
ExcelPlas has extensive analytical capabilities for testing of Protective Coatings and Insulation Consulting for major oil and gas companies.
We conduct corrosion surveys, coating sampling, coating analysis and testing to ensure coating specifications for a wide range of onshore and offshore clients in Australia and the Asia-Pacific Region.
ExcelPlas Labs offer a full range of coating testing and analytical services to Australia’s mining, oil, gas and infrastructure sectors.
Forensic analysis for undertaking various coating based failure investigations and problem solving.
ExcelPlas Undertakes Analysis & Testing of Polymer Coating Systems including:
• Epoxy Protective Coatings
• Epoxy-Phenolic Protective Coatings
• Fusion bonded epoxy (FBE)
• Dual-Layer Fusion bonded epoxy (DLFBE)
• Liquid applied epoxy (LAE)
• Abrasion resistant overcoat (ARO)
• Three-layer PE (3LPE)
• Multi-component liquid spray (MCL)
• Heat shrink sleeves (HSS)
Testing on Coatings that ExcelPlas can Undertake includes:
• Coating identification by Infra-red Analysis (FTIR)
• Degree of Cure by Thermal Analysis (DSC)
• Coating Filler Identification by X-ray Analysis (EDS/XRD)
• Coating Microstructure by Embedding, Polishing and Optical Microscopy (OM)
• Coating Thermal Stability and Composition by Thermogravimetric Analysis (TGA)
DSC – Phase transition/volatiles / Tg / degree of cure/characterisation
TGA – Volatile compounds, inorganic mass % mix ratio
Element mapping for chlorides on paint flakes
Microscopy -Count layers and thickness of layers
-Assess porosity and voids
-Check distribution and orientation of filler particles
Condition monitoring and analysis of corrosion prevention coatings (epoxies, epoxy-phenolics)
Testing of Epoxy Coatings (LAE, FJC, FBE), heat shrink sleeves and tapes, barrier tapes and meshes.
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