NACE 2 CBT Study Guide Questions and
Answers| Latest Update
What are the 3-layers of zinc formed during the galvanizing process? Zeta(94/10),
Gamma(90/10), Delta(75/25); Top layer ETA(100/0)
4-Methods of verifying thickness of protection on galvanized metals 1.Magnetic
Thickness Gauge
2.Stripping
3.Weighing
4.Optical Microscopy
Two variants of flame spraying are: 1.Powder Flame Spraying
2.Wire Flame Spraying
Spray method that uses 2-wires at the nozzle with an electrical load to melt when they touch
allowing the carrier gas to strip the molten material off the wires and onto the surface, is:
Arc Spray
The core temperature of this sprayer may reach up to 18,032'F; method initially developed to
spray ceramics, is: Plasma Spray
Spray method works off a combustion chamber where gases pass through at supersonic speeds
and allows for the densest thermal spray coating available, referred to as: High Velocity
Oxyfuel Spraying
Method of vapor galvanizing; the process of heating substrate with zinc powder in an airtight
container to a temperature between 572-752'F bonding the two by the process of zinc diffusion,
is: Sherardizing
,The process of aluminum vapors diffusing into the surface of the substrate (process similar to
galvanizing), is: Aluminizing
What is the purpose of a coating survey? To provide a baseline of information needed to
plan maintenance coating programs; it gathers information regarding a previously coated
protective system
Who are the most qualified to perform a coating survey? List In the order from the most
qualified to the least. 1.NACE S-CAT, NACE O-CAT
2.NACE Coating Specialist
3.Level 3-CIP
4.Inspector w/field experience
5.Coating Manufacturer
6.Maintenance Engineer
An O-CAT certification is for: Platform Surveys
An S-CAT certification is for: Ship Surveys
Laitance is more likely to occur in Poured (wet-cast) Concrete then in a ___________ _________
surface Concrete Block
Standard NACE #16
Common failures of an Acrylic resin when it is the only resin in the coating, are: 1.Failure
to fully cure
2.Failure to adhere when used as a primer (caused by hot or windy conditions)
,Necessary inspection points with acrylic coatings are: 1.DFT
2.Surface Temp.
3.Wind Speed
4.Overcoat Window
Specification for application of Thermal Spray Coatings NACE #12/AWS C2.23M/SSPC-
2300
A pH meter is calibrated using what? A Standard Buffer Solution at a specified
Temperature
Isocyanates (not particularly flammable) bulk storage should be: In a well ventilated area
that is separate from the work place
What are some common ways to become exposed to Isocyanates? (Irritation to the eyes, skin,
nose ,and throat e.i. May cause asthma) 1.Painting
2.Foam-blowing
3.Insulating
4.Adhesive Application
A CIP LEVEL 2, has the ability to undertake advanced coating inspection work under the
supervision of _______________________ COMPETENT/QUALIFIED coatings inspector
A properly prepared substrate ______________ cost of fabrication, but initial cost to prepare
the surface properly outweighs the _____________ of properly installed coating systems.
increases; service-life
Selection of particular corrosion protection system is typically a function of: 1.Economic
Issues
, 2.Operational Issues
3.Environmental Issues
4.Safety Issues
Name the two major curing mechanism categories: 1.Non-Covertible (no chemical
change while curing)
2.Convertible (chemical change while curing)
Solvent-Evaporation cure is considered a ____________________ coating Non-
Convertible
Chlorinated Rubber should be over-coated only with, what? 1.Chlorinated Rubber
2.Single Package Waterbourne Material
3.Solvent-free Chemically-cured Coating
If a coating fails a solvent rub test this action directly indicates, what? Coating should not
be over-coated with a Convertible Coating
Most evaporative-cure coatings are, what? Solvent Sensitive
Inspection points for Chlorinated Rubber coatings, are: 1.DFT
2.Surface Preparation
3.Overcoat Window
Two major concerns when working around Vinyl coatings, are: 1.Solids as low as 25%
2.Solvent release into the atmosphere (poor ventilation causes blistering)
Answers| Latest Update
What are the 3-layers of zinc formed during the galvanizing process? Zeta(94/10),
Gamma(90/10), Delta(75/25); Top layer ETA(100/0)
4-Methods of verifying thickness of protection on galvanized metals 1.Magnetic
Thickness Gauge
2.Stripping
3.Weighing
4.Optical Microscopy
Two variants of flame spraying are: 1.Powder Flame Spraying
2.Wire Flame Spraying
Spray method that uses 2-wires at the nozzle with an electrical load to melt when they touch
allowing the carrier gas to strip the molten material off the wires and onto the surface, is:
Arc Spray
The core temperature of this sprayer may reach up to 18,032'F; method initially developed to
spray ceramics, is: Plasma Spray
Spray method works off a combustion chamber where gases pass through at supersonic speeds
and allows for the densest thermal spray coating available, referred to as: High Velocity
Oxyfuel Spraying
Method of vapor galvanizing; the process of heating substrate with zinc powder in an airtight
container to a temperature between 572-752'F bonding the two by the process of zinc diffusion,
is: Sherardizing
,The process of aluminum vapors diffusing into the surface of the substrate (process similar to
galvanizing), is: Aluminizing
What is the purpose of a coating survey? To provide a baseline of information needed to
plan maintenance coating programs; it gathers information regarding a previously coated
protective system
Who are the most qualified to perform a coating survey? List In the order from the most
qualified to the least. 1.NACE S-CAT, NACE O-CAT
2.NACE Coating Specialist
3.Level 3-CIP
4.Inspector w/field experience
5.Coating Manufacturer
6.Maintenance Engineer
An O-CAT certification is for: Platform Surveys
An S-CAT certification is for: Ship Surveys
Laitance is more likely to occur in Poured (wet-cast) Concrete then in a ___________ _________
surface Concrete Block
Standard NACE #16
Common failures of an Acrylic resin when it is the only resin in the coating, are: 1.Failure
to fully cure
2.Failure to adhere when used as a primer (caused by hot or windy conditions)
,Necessary inspection points with acrylic coatings are: 1.DFT
2.Surface Temp.
3.Wind Speed
4.Overcoat Window
Specification for application of Thermal Spray Coatings NACE #12/AWS C2.23M/SSPC-
2300
A pH meter is calibrated using what? A Standard Buffer Solution at a specified
Temperature
Isocyanates (not particularly flammable) bulk storage should be: In a well ventilated area
that is separate from the work place
What are some common ways to become exposed to Isocyanates? (Irritation to the eyes, skin,
nose ,and throat e.i. May cause asthma) 1.Painting
2.Foam-blowing
3.Insulating
4.Adhesive Application
A CIP LEVEL 2, has the ability to undertake advanced coating inspection work under the
supervision of _______________________ COMPETENT/QUALIFIED coatings inspector
A properly prepared substrate ______________ cost of fabrication, but initial cost to prepare
the surface properly outweighs the _____________ of properly installed coating systems.
increases; service-life
Selection of particular corrosion protection system is typically a function of: 1.Economic
Issues
, 2.Operational Issues
3.Environmental Issues
4.Safety Issues
Name the two major curing mechanism categories: 1.Non-Covertible (no chemical
change while curing)
2.Convertible (chemical change while curing)
Solvent-Evaporation cure is considered a ____________________ coating Non-
Convertible
Chlorinated Rubber should be over-coated only with, what? 1.Chlorinated Rubber
2.Single Package Waterbourne Material
3.Solvent-free Chemically-cured Coating
If a coating fails a solvent rub test this action directly indicates, what? Coating should not
be over-coated with a Convertible Coating
Most evaporative-cure coatings are, what? Solvent Sensitive
Inspection points for Chlorinated Rubber coatings, are: 1.DFT
2.Surface Preparation
3.Overcoat Window
Two major concerns when working around Vinyl coatings, are: 1.Solids as low as 25%
2.Solvent release into the atmosphere (poor ventilation causes blistering)
