Coatings and insulations are amongst the most critical components to overall asset integrity. Visual inspection, holiday testing, surface preparation, bonding, application, repairs, and recommendations under the supervision of qualified QA/QC personnel are essential to the success of the applied coating.
- NACE level 1, 2, 3 for inspection & applications.
- Coating application experience.
- Media Blast for removals.
- Irata level 1, and 2, with 3.
Rope access is an effective method to do coating repairs and replacements in tight windows.
Visual inspection is the most effective method to inspect coatings. This should be reinforced with holiday testing, thickness measurements (DFT/WFT), environmental controls, proper surface conditions, and QA/QC during the application and inspection periods.
Coating Inspection and Application Results:
- Application in accordance with governing standards.
- Adequate surface preparation.
- Maximized coating life.
- Repairs to achieve intended service cycles.
Corrosion under insulation can have a detrimental effect on equipment.
Inspection Planning Checklist:
|Asset Component||Required Action|
|Type of Coating||Verify through company records, nameplate data and drawings.|
|Dry Film Thickness||Measured with a coating thickness gauge.|
|Wet Film Thickness||Wet film thickness gauge.|
|Visual Defects||Verify with flashlight and magnification as required. Ensure sufficient cleaning.|
|# of Holidays||Examination performed with low or high voltage holiday detection tool at a voltage determined by coating type and thickness.|
|Application Errors||Check for runs, uneven thickness, fisheyes, lack of adhesion, poor work practices.|
|Remaining Life||Verify application date and intended life cycle with service, and as found field results.|
|Insulation Cladding||Check for structural integrity, holes, other damages.|
|Insulation Material||Verify if CUI is present, and the overall condition of insulation material.|
|Banding||Check for tightness and damage.|
|Fasteners||Verify the condition of fasteners.|
|Hardware||Verify if all hardware is present and operating.|