PA-11: External Painting

Title Page

General Information

Compliance Question

1.1: Is the latest revision ROO specification readily available
1.2: Is an approved ITP (code 1) available and in-use
Verify the ITP is approved for the current scope of work and check the approval date
1.3: Are the blast media and paint batch certificates (CoC's) available and reviewed
Ensure batch numbers on the certificate align with the materials being used
1.4: Is the Contractor working to the correct revision drawings
1.5: Have all inspector and operator certificates been made available
Are all certificates valid and relevant to the skills required for the task
1.6: Are all calibration certificates in date for inspection equipment
Confirm the calibration certificates cover all inspection equipment in use
1.7: Are the paint material & storage conditions acceptable
Spot Inspection Check
- Temperature and Humidity Logbook
- Segregation
- Manufacturer Label
- Expiry Date
1.8: Does the daily production report include WFT, DFT, environmental conditions, and batch numbers

2.1: Is the compressor, blasting equipment, and spray pump properly earthed to prevent static buildup
2.2: Are dead man’s handles fitted and operational
2.3: Are all required permits to work (PTW) in place and signed by relevant parties
2.4: Is the work area barricaded to stop people not associated with the operations entering
2.5: Are all personnel carrying out the work wearing the correct PPE

3.1: For the blast hose, is the nozzle pressure correct @ 90psi, measured at the nozzle side
3.2: Has the blaster been briefed on the job specification, including blast standard and cleanliness requirements
(e.g., ISO 8501-1 Sa 2.5)
3.3: Confirm blast media size, type, and cleanliness are suitable for the substrate
3.4: Is the substrate visually inspected and free of oil, grease, laminations, scabs, slivers, and other defects per ISO 8501-3
3.5: Are adjacent areas adequately protected from blasting contamination and overspray
3.6: Are environmental conditions, including temperature, dew point, and humidity, verified and within specified thresholds (RH <85%, T ≥5°C)

4.1: Are sharp edges properly rounded, and the surface free from spatter, laminations, burrs, and other defects
4.2: Are soluble salt levels on the substrate tested (limit <20mg/m² per ISO 8502-9) and results recorded
4.3: Is the surface profile measured and within the specified range
(e.g., 40–70 microns), using Testex tape or equivalent
4.4: Is the surface free of dust contamination
ISO 8502-3 requirements, maximum rating ‘2’, class ‘2’

select the material type
- Carbon Steel
- Stainless Steel
- Galvanized Steel
select the item type
- Piping
- Structural Steel
- Tanks
- Valves
- Vessel
5.1: Is the applicator suitably qualified according to project requirements
Ensure evidence of qualification endorsed by GCMC is provided
5.2: Confirm the correct paint system has been selected
specify the system
- Paint System 1
- Paint System 2
- Paint System 3
- Paint System 4
- Paint System 5
- Paint System 6
- Paint System 7
- Paint System 8
5.3: Are all paint materials supplied by the same manufacturer
specify the manufacturer
- Jotun
- International Paints
- Hempel
- Other
5.4: Are the batch numbers of the paint and thinners clearly visible and recorded
5.5: Has the paint been mixed thoroughly using an electric agitator and the correct thinners as per MDS
5.6: Have all environmental checks been taken and recorded, including steel temperature
5.7: Is the paint applied within 4 hours, and is the substrate free from flash rust
5.8: Is the spray tip/nozzle correct and the fluid pressure as per MDS
5.9: Have all welds and hard-to-hit areas been stripe coated by brush prior to spray application

6.1: Is the first coat free from defects, including runs, sags, pinholes. Fully cured
6.2: Have all environmental checks been taken and recorded, including steel temperature
6.3: Have the paint and thinner batch numbers been recorded
6.4: Have the specified number of DFT readings been taken for each area, with results recorded
6.5: Are all surfaces visually inspected for coating defects (e.g., runs, sags, pinholes, or overspray) in accordance with SSPC-VIS standards

7.1: Is the paint material for touch-up supplied by the same manufacturer
7.2: For small areas, does the repaired coating overlap the existing coating by at least the specified amount (e.g., 50mm) to ensure adhesion
7.3: For larger repair areas, has the specification been followed, with re-blasting and new system application?
7.3: Is the dry film thickness (DFT) of the repair area verified to meet specification requirements
7.4: Have detailed repair logs, including batch numbers, DFT readings, and environmental conditions been recorded

8.1 Was an adhesion test conducted using the specified method (pull-off) with results meeting minimum adhesion values
Refer to ISO 4624 or ISO 2409
8.2: If applicable, have all coated surfaces undergone holiday testing for pinhole detection
Ensure holiday detection complies with the test parameters outlined in ISO 29601
8.3: Are daily inspection logs reviewed and approved by QA/QC representatives, including environmental and application condition checks
Append relevant forms
8.4: Is the final report inclusive of all tests, inspections, and repairs, submitted to COMPANY for approval