Questions and Answers
1. What is the cause of chalking in epoxy coating
ANS UV or radiation exposure
2. What is polymerization cured coating?
ANS Two parts mixed together just prior to use
3. Examples of non-convertible coatings
ANS 1. Chlorinated rubber
2. Vinyl
3. Acrylic
4. Bituminous
4. Non-convertible curing def.
ANS No chemical change during cure cycle
5. Convertible curing def.
ANS Some chemical change during cure cycle
6. What info should be included when sending samples to a lab?
ANS 1. Identity of materials
1/
21
,2. Properly packed/labeled samples 3. Chain of custody form 4. Type of analysis that is expected and the
concentrations of interest
7. Specialized tests or equipment coating inspectors may encounter
ANS 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
8. What is a cathodic disbondment test?
ANS Procedure to determine how easily a coating loosens
from a substrate or develops holidays as a result of normal soil potentials
9. Individuals who perform surveys
ANS 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. Maintenance engineer with specific plant knowledge.
10. Coating survey steps
ANS 1. Understand scope
2. Gather team
2/
21
, 3. Develop survey plan
4. Review standards
5. Agree on format
6. Delegate various tasks
7. Evaluate 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.
11. List some of the primary reasons surveys are performed
ANS 1. Plan maintenance. 2. Prioritize work 3. Budgetary concerns 4. Determine value of
assets 5. Legal compliance
12. Definition of a coating survey
ANS Gather baseline info needed to plan maintenance coating procedures
13. What are faying surfaces and why not galvanize them?
ANS Surfaces that depend on friction to hold galvanizing it may/will reduce friction if they are
galvanized
3/
21