ITW DEVCON ENGINEERED COATINGS - ITW Futura Coatings

4.3. Prior to abrasive blast cleaning remove all deposits of dirt, oil, grease, or other contaminants in
accordance with SSPC-SP1.
4.4. All immersion-service steel surfaces shall be prepared in accordance with SSPC-SP5, White
Metal Blast Cleaning.
4.4.1. All non-immersion areas can be prepared in accordance with SSPC-SP10, Near White Metal
Blast Cleaning.
4.5. All steel surfaces shall have a surface profile (anchor pattern) of 3 to 4 mils.
4.5.1. Heavily corroded steel, containing grooving or pinholes, shall be opened up and sharp edges
removed through the use of an appropriate mixture of non-metallic, abrasive blast media.
4.5.2. The surface profile (anchor pattern) shall be verified through the use of replica tape in
accordance with ASTM D4417, “Standard Test Methods for Field Measurement of Surface
Profile of Blast Cleaned Steel”.
4.6. All welds must be continuous. Skip or intermittent welds must be made continuous by welding.
4.7. All welds must be clean and free of spatter or sharp projections.
4.8. All welds must be ground to remove sharp edges, undercutting, pinholes or any other
irregularities. Relative smooth, ripple finish welds are acceptable.
4.9. All welds must meet NACE RP0178 Designation “C” as a minimum.
4.10. All lap joints must receive a continuous fillet weld.
4.11. All corners and sharp edges must be ground to a minimum 1/8” radius.
4.12. All inlet and outlet ports must be welded pads or flanges, not threaded.
4.13. All internal bracing or reinforcement with open ends must be capped and seal welded.
4.14. Prior to coating application, all prepared surfaces shall be vacuumed or blown down with clean,
dry compressed air to remove dust, grit, or abrasives.
4.15. Surfaces to be coated shall be tested for soluble salts contamination. Salt contamination levels in
excess of 40 micrograms per square centimeter shall be rejected, and additional cleaning with
steam or fresh water to flush away the soluble salts will be required.
4.16. Simultaneous coating application and abrasive blasting operations shall not be conducted where
possible contamination of the coating can occur.
4.17. If surface preparation is conducted in sections, no coating may be applied within six (6) inches of
the temporary boundary of a cleaned area.
4.18. Abrasive blasted surfaces shall be coated within eight (8) hours maximum and prior to any rust
bloom occurring. No metal shall be coated that exhibits visible rust bloom.
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04/10 Irathane 155 Steel