AMPP CIP Level 3 cheat sheet

Adhesion per ASTM D3359: classification 5B = no removal, 0B = >65% area removed; report tape grade and test location.

Dry film thickness per SSPC-PA 2: each gage reading must fall between 80% and 120% of specified DFT; the average of all readings must be at or above specification.

SSPC-PA 2 spot measurement: take three gage readings within a 4 cm (1.5 in) diameter circle; average them to obtain one spot value.

Frequency rule (PA 2): one spot measurement per 100 ft2 (10 m2) of coated area, with a minimum of three spots per area unless the area is smaller.

Wet film thickness = dry film thickness / (volume solids fraction); WFT = DFT / VS.

Holiday detection: low-voltage wet-sponge for thin films; high-voltage spark tester for thick films, with voltage set per coating thickness and dielectric strength.

Surface profile per ASTM D4417: Method B stylus gives Rpc/peak count; Method C replica tape reports profile in mils; compare to specified range.

Ambient readings before and during application: steel surface temperature must be at least 3 C (5 F) above dew point; record RH, air and steel temperature.

Nonconformance handling: document the deviation, segregate or hold the work, and require disposition (rework, repair, or accept by concession) before release.

Zinc-rich primers: verify zinc content in dry film (commonly >= 80% by weight per SSPC Paint 20 Type I/II) and confirm cure before topcoating.

Immersion service coatings require holiday-free films, DFT verification at multiple spots, and cure testing (solvent rub or MEK resistance) before service.

Abrasive blast cleanliness per SSPC-SP 10/NACE No. 2 (near-white) versus SP 5/NACE No. 1 (white metal); specification sets the required grade.

Cathodic disbondment testing (ASTM G8/G95) evaluates coating resistance to disbondment at intentional holidays under cathodic protection.

High-temperature coatings: silicone-based systems rated by continuous versus intermittent temperature limits; verify grade matches service temperature.

Tank lining inspection includes spark testing of welds and corners, DFT survey, and cure verification before immersion.

Pipeline coating inspection: check coating thickness, holiday detection, and adhesion per project specification; field joints are high-risk areas.

Thermal spray (TSA/TSZ) inspection: measure thickness by magnetic or eddy-current gages and assess bond strength and porosity per specification.

Concrete coatings: check moisture content (ASTM D4263 plastic sheet test), surface pH, and profile before applying coating systems.