100% Correct Verified Answers
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.
List some of the primary reasons surveys are performed - ✔✔✔ - 1. Plan maintenance. 2.
Prioritize work 3. Budgetary concerns 4. Determine value of assets 5. Legal compliance
Definition of a coating survey - ✔✔✔ - Gather baseline info needed to plan maintenance
coating procedures
What are faying surfaces and why not galvanize them? - ✔✔✔ - Surfaces that depend on
friction to hold galvanizing it may/will reduce friction if they are galvanized
Common problems seen during the usual inspections of HD galvanized items - ✔✔✔ - 1.
Cracking 2. Peeling 3. Bare spots 4. Lumps 5. Blisters 6. Flux inclusions 7. Ash inclusions 8.
Dross inclusions
Post galvanizing treatments and why - ✔✔✔ - To Remove Thickness: Roll, Wipe,
Centrifuge/Air Blast
To change properties/To alloy: Annealing
Temperature range for galvanizing kettle - ✔✔✔ - 820-850 F
Purpose of pickling - ✔✔✔ - Hydrochloric or sulfuric acid bath to remove oxides and mill
scale
Purpose of caustic cleaning - ✔✔✔ - Acid bath or caustic to remove dirt, oil and grease