AMPP CIP Level 3 flashcards
AMPP CIP Level 3 · Build recall with a focused review session.
33 cards. Read the term and the definition here. The deck at the top of this page is optional.
- DFT gage range rule
- Per SSPC-PA 2, each individual dry film thickness reading must lie between 80% and 120% of the specified thickness; the average of all readings must meet or exceed specification.
- Spot measurement definition
- In SSPC-PA 2, a spot measurement is the average of three individual gage readings taken within a 4 cm diameter circle at a single location on the coated surface.
- Wet film thickness formula
- Wet film thickness equals dry film thickness divided by the volume solids fraction. Example: 6 mils DFT at 60% volume solids requires 10 mils WFT.
- Dew point rule
- Steel surface temperature must be at least 3 C (5 F) above the dew point before and during coating application to prevent condensation on the surface.
- Adhesion tape test
- ASTM D3359 Method A uses an X-cut and Method B uses a lattice pattern; adhesion is graded 0B to 5B, with 5B indicating no coating removal.
- Holiday detection methods
- Low-voltage wet-sponge testing detects discontinuities in thin films; high-voltage spark testing is used for thicker films with voltage set per coating thickness.
- Surface profile measurement
- ASTM D4417 methods include stylus (Method B) and replica tape (Method C). Replica tape reports peak-to-valley profile depth in mils or micrometers.
- Nonconformance report
- A documented record of a deviation from specification that identifies the condition, location, and required disposition such as rework, repair, or concession.
- Hold point definition
- A designated inspection step in the quality plan where work cannot proceed until the inspector verifies and documents the required condition.
- Solvent rub test
- A cure check where a solvent-soaked cloth is rubbed on the film; softening or coating removal indicates incomplete cure of the coating.
- Environmental readings record
- Inspectors record air temperature, steel temperature, relative humidity, and dew point before, during, and after application to document compliance.
- Calibration verification
- Gages used for DFT or profile measurement must be checked against known standards before use and at intervals, with results recorded.
- Inspection test plan
- A document defining inspection activities, acceptance criteria, frequencies, and hold points for each phase of the coating project.
- Blast cleanliness grades
- SSPC-SP 5/NACE No. 1 is white metal; SSPC-SP 10/NACE No. 2 is near-white; SSPC-SP 6/NACE No. 3 is commercial blast.
- Zinc-rich primer requirement
- Zinc-rich primers commonly require at least 80% zinc in the dry film per SSPC Paint 20, and must be fully cured before topcoating.
- Cathodic disbondment test
- ASTM G8 and G95 evaluate coating disbondment around an intentional holiday when the steel is under cathodic protection in an electrolyte.
- Immersion service coating
- A coating system for continuous liquid contact requiring holiday-free film, verified DFT, and cure testing before the vessel is placed in service.
- Tank lining spark test
- High-voltage holiday detection of the lining, focusing on welds, corners, and other discontinuities where thin or missed coating is likely.
- Field joint coating
- Coating applied to girth welds and cutbacks on pipelines after mainline coating; a high-risk area requiring DFT and holiday inspection.
- Thermal spray coating
- Metal or zinc-aluminum coating applied by flame or arc spray; inspection includes thickness measurement, bond strength, and porosity assessment.
- High-temperature coating
- Silicone-based systems rated by continuous and intermittent service temperature limits; the grade must match the actual service temperature.
- Concrete moisture test
- ASTM D4263 plastic sheet test checks moisture vapor emission from concrete before coating; surface pH and profile are also verified.
- MEK resistance test
- A cure verification method for immersion coatings where solvent resistance indicates the degree of cure before the vessel enters service.
- Intumescent fireproofing
- A coating that expands when heated to insulate steel; inspection verifies DFT, adhesion, and thickness per fire-rated design requirements.
- Epoxy versus polyurethane
- Epoxy coatings provide chemical resistance and immersion service; polyurethane topcoats provide color and gloss retention for atmospheric exposure.
- Passivation of stainless
- Removal of surface contaminants from stainless steel using acid treatment to restore the passive chromium oxide layer before coating or service.
- Galvanic corrosion risk
- Dissimilar metals in contact in an electrolyte create a galvanic couple; the less noble metal corrodes, affecting coating selection and inspection.
- FBE pipeline coating
- Fusion-bonded epoxy applied to pipe; inspection includes thickness, holiday detection, and adhesion checks at cutbacks and field joints.
- Splash zone coating
- Coating for the tidal and splash zone of marine structures; requires high-build, abrasion-resistant systems and careful holiday inspection.
- Chloride contamination test
- Solvent extraction or sleeve testing measures soluble chloride on blast-cleaned steel; excessive chloride reduces adhesion and promotes undercutting.
- Coating cure verification
- Confirmation that the coating has reached the required cure stage using solvent rub, hardness, or time-temperature records before topcoating or service.
- Abrasive blast nozzle pressure
- Nozzle pressure at the blast nozzle is measured during surface preparation; inadequate pressure reduces cleaning rate and profile quality.
- Zinc silicate cure
- Zinc silicate primers require moisture to cure and are sensitive to humidity; incomplete cure causes poor adhesion and topcoat failure.