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What is the cause of chalking in epoxy coating - UV or radiation exposure What is polymerization cured coating? - Two parts mixed together just prior to use Examples of non-convertible coatings - 1. Chlorinated rubber 2. Vinyl 3. Acrylic 4. Bituminous Non-convertible curing def. - No chemical change during cure cycle Convertible curing def. - Some chemical change during cure cycle What info should be included when sending samples to a lab? - 1. Identity of materials 2. Properly packed/labeled samples 3. Chain of custody form 4. Type of analysis that is expected and the concentrations of interest Specialized tests or equipment coating inspectors may encounter - 1. AA/AE Atomic Absorption/Emission 2. ISP Induction coupled plasma Spectrometer 3. GLC Gas liquid chromatographs 4. IR, FTIR, FTIR-ATR INfrared spectrophotometers 5. DSC Differential scanning calorimeters What is a cathodic dis-bondment test? - Procedure to determine how easily a coating loosens from a substrate or develops holidays as a result of normal soil potentials Individuals who perform surveys - 1. O-Cat or S-cat tech 2. NACE coating specialist 3. NACE Level III 4. Coating Inspector w/field experience 5. Coating manufacturer representative 6. Maintenence engineer with specific plant knowledge. Coating survey steps - 1. Understand scope 2. Gather team 3. Develop survey plan 4. Review standards 5. Agree on format 6. Delegate various tasks 7. Eveluate existing coating 8. Delegate various tasks 9. Evaluate existing coating 10. Gather additional info 11. Summarize data 12. Prepare maintenance plans 13. Prepare reports/input data 14. Submit final survey reports