NACE CIP Level 2 Exam Questions And Answers
Verified 100% Correct
Describe passivation and what it does? - ANSWER -*formation of protective
oxide film
* reduces chemical activity
*reduce the ability to corrode
What are the effects of oxygen on corrosion? - ANSWER -Oxygen increases
corrosion
What are the effects of temperature on corrosion? - ANSWER -Higer temperature
increases corrosion
What are the effects of chemical salts on corrosion? - ANSWER -They increase
the electrolyte efficiency, therefore increasing corrosion
What are the effects of Humidity on corrosion? - ANSWER -A wetter
environment means more corrosion is likely to occur
What are the effects of Pollutants and Acid gases on corrosion? - ANSWER -Acid
rain, chemical byproducts and chlorides all promote corrosion.
What are the causes for pinholes? - ANSWER -*Coating overspray
*solvent entrapment
*porosity in previously applied coat
*incorrect spray viscosity
*coating on hot surface
What are the limitations of Magnetic Gages? - ANSWER -*only work on
magnetic surfaces
*Sensitive to discontinuities in the steel, like
holes, corners and edges
*Affected by nearby magnetic fields like power
lines, welding equipment or other masses of
steel.
*roughness of steel may distort the readings
,What type of High Voltage (HV) detector is used for concrete? - ANSWER -
Constant current DC
Water entering from compressor is dependent on? - ANSWER -*prevailing
ambient temperature
*relative humidity
What are the causes of amine blush on cure epoxies and coal tar epoxies? -
ANSWER -*Moisture condensation from high humidity
Atmosphere
*Fast thinners used in high humidity
*condensation on a cold surface
What is the finish on cured epoxies and coal tar epoxies with amine blush? -
ANSWER -Flat and milky finish
Procedure for testing compressed air supply - ANSWER -*Test air supply
downstream from oil & moisture traps
*Hold as close as possible in airstream for 2 minutes
*No further than 24" from source
*Examine test material for evidence of oil contamination and moisture
*Test by smell and touch
Are oxygen contact areas Cathodic? - ANSWER -Yes
What NACE/SSPC specification limits staining to 50% per each unit area? -
ANSWER -NACE 2/SSPC-SP10
What are the two powder coating curing categories? - ANSWER -*Thermoplastic-
softens when heated
*Thermosetting-hardens with heat
What are the major coating components? - ANSWER -*Vehicle: Solvent & resin
(binder)
*Pigment: colouring and reinforcements (inserts)
Products used to remove oil contamination on steel shot or grit are? - ANSWER -
Diatomaceous earth and convent cleaning
,What are the sources of oil contamination in steel shot or grit? - ANSWER -
*Added to steel shot and grit at mill to prevent rusting
*cutting oils and lubricants
What is an electrolyte? - ANSWER -It is the medium that conducts ionic current
Procedure to calibrate Fixed Probe Magnetic Flux gages is? - ANSWER -*Place
probe on blasted bare steel and adjust scale by turning knob to "0"
*Place desired shim on steel and ensure meter reads shim thickness
*Repeat until "0" setting and thickness reading are correct.
What considerations need to be considered for enclosures? - ANSWER -*Must be
large enough to perform the work
*Size is relevant to the dehumidification equipment capacity
*Sturdy
*Minimal leakage to maintain a required environmental conditions
What is Air turns (air changes)? - ANSWER -*eliminates air stratification or
layering
*recirculates hot air trapped in higher spaces
*is the number of times completed per hour
What is galvanic corrosion? - ANSWER -*Electrochemical action
*two dissimilar metals, an electrolyte & electron conducive path when dissimilar
metals come in contact
What is the purpose of Cathodic Protection? - ANSWER -*Reduce or elimination
of corrosion
*a structure protected by cathode
*completed by impressed current or a galvanic anode (sacrificial)
What are the basic centrifugal Blast setups? - ANSWER -*Tumbling mill
*Multi-table
*Plain table
*Custom design
What can a Blasting conveyor system clean? - ANSWER -*Plate
*Rolled Structural Steel
*Large Trusses
*Girders
, What can portable centrifugal blast systems clean? - ANSWER -*Ship decks, hulls
and bottoms
*Storage tanks
*Concrete floors
*Highways and bridge decks
What are the components of a Centrifugal Blast system? - ANSWER -
*Centrifugal abrasive throwing wheel
*Blast cabinet
*Fixed systems have a material handling system
*Abrasive recycling system
*Dust collector and vent pipe
*Abrasive
The efficiency of a centrifugal blast system depends on? - ANSWER -*Abrasive
operating mix
*Size of abrasive
*Velocity of abrasive coming off the wheel
*Quantity & direction of the thrown abrasive
*Condition of the feed parts
Low amperage reading on a centrifugal blast system could indicate? - ANSWER -
*abrasive starved wheel
*Flooded or choked wheel
Function of the separator in a centrifugal blast system? - ANSWER -*Control the
sizing of abrasive mix
*Remove sand, spent abrasive (fines), rust, dirt, and other contaminants
*Control abrasive consumption
Inspection concerns during centrifugal blasting include? - ANSWER -*Monitor
dust collector
*Monitor the amperage of the wheel motors /
Low amperage
*Monitor the handling and loading of the conveyor line for contaminates and
possible discontinuities in the steel
*Monitor the speed of the line
*Inspect the steel as it leaves the production line
Verified 100% Correct
Describe passivation and what it does? - ANSWER -*formation of protective
oxide film
* reduces chemical activity
*reduce the ability to corrode
What are the effects of oxygen on corrosion? - ANSWER -Oxygen increases
corrosion
What are the effects of temperature on corrosion? - ANSWER -Higer temperature
increases corrosion
What are the effects of chemical salts on corrosion? - ANSWER -They increase
the electrolyte efficiency, therefore increasing corrosion
What are the effects of Humidity on corrosion? - ANSWER -A wetter
environment means more corrosion is likely to occur
What are the effects of Pollutants and Acid gases on corrosion? - ANSWER -Acid
rain, chemical byproducts and chlorides all promote corrosion.
What are the causes for pinholes? - ANSWER -*Coating overspray
*solvent entrapment
*porosity in previously applied coat
*incorrect spray viscosity
*coating on hot surface
What are the limitations of Magnetic Gages? - ANSWER -*only work on
magnetic surfaces
*Sensitive to discontinuities in the steel, like
holes, corners and edges
*Affected by nearby magnetic fields like power
lines, welding equipment or other masses of
steel.
*roughness of steel may distort the readings
,What type of High Voltage (HV) detector is used for concrete? - ANSWER -
Constant current DC
Water entering from compressor is dependent on? - ANSWER -*prevailing
ambient temperature
*relative humidity
What are the causes of amine blush on cure epoxies and coal tar epoxies? -
ANSWER -*Moisture condensation from high humidity
Atmosphere
*Fast thinners used in high humidity
*condensation on a cold surface
What is the finish on cured epoxies and coal tar epoxies with amine blush? -
ANSWER -Flat and milky finish
Procedure for testing compressed air supply - ANSWER -*Test air supply
downstream from oil & moisture traps
*Hold as close as possible in airstream for 2 minutes
*No further than 24" from source
*Examine test material for evidence of oil contamination and moisture
*Test by smell and touch
Are oxygen contact areas Cathodic? - ANSWER -Yes
What NACE/SSPC specification limits staining to 50% per each unit area? -
ANSWER -NACE 2/SSPC-SP10
What are the two powder coating curing categories? - ANSWER -*Thermoplastic-
softens when heated
*Thermosetting-hardens with heat
What are the major coating components? - ANSWER -*Vehicle: Solvent & resin
(binder)
*Pigment: colouring and reinforcements (inserts)
Products used to remove oil contamination on steel shot or grit are? - ANSWER -
Diatomaceous earth and convent cleaning
,What are the sources of oil contamination in steel shot or grit? - ANSWER -
*Added to steel shot and grit at mill to prevent rusting
*cutting oils and lubricants
What is an electrolyte? - ANSWER -It is the medium that conducts ionic current
Procedure to calibrate Fixed Probe Magnetic Flux gages is? - ANSWER -*Place
probe on blasted bare steel and adjust scale by turning knob to "0"
*Place desired shim on steel and ensure meter reads shim thickness
*Repeat until "0" setting and thickness reading are correct.
What considerations need to be considered for enclosures? - ANSWER -*Must be
large enough to perform the work
*Size is relevant to the dehumidification equipment capacity
*Sturdy
*Minimal leakage to maintain a required environmental conditions
What is Air turns (air changes)? - ANSWER -*eliminates air stratification or
layering
*recirculates hot air trapped in higher spaces
*is the number of times completed per hour
What is galvanic corrosion? - ANSWER -*Electrochemical action
*two dissimilar metals, an electrolyte & electron conducive path when dissimilar
metals come in contact
What is the purpose of Cathodic Protection? - ANSWER -*Reduce or elimination
of corrosion
*a structure protected by cathode
*completed by impressed current or a galvanic anode (sacrificial)
What are the basic centrifugal Blast setups? - ANSWER -*Tumbling mill
*Multi-table
*Plain table
*Custom design
What can a Blasting conveyor system clean? - ANSWER -*Plate
*Rolled Structural Steel
*Large Trusses
*Girders
, What can portable centrifugal blast systems clean? - ANSWER -*Ship decks, hulls
and bottoms
*Storage tanks
*Concrete floors
*Highways and bridge decks
What are the components of a Centrifugal Blast system? - ANSWER -
*Centrifugal abrasive throwing wheel
*Blast cabinet
*Fixed systems have a material handling system
*Abrasive recycling system
*Dust collector and vent pipe
*Abrasive
The efficiency of a centrifugal blast system depends on? - ANSWER -*Abrasive
operating mix
*Size of abrasive
*Velocity of abrasive coming off the wheel
*Quantity & direction of the thrown abrasive
*Condition of the feed parts
Low amperage reading on a centrifugal blast system could indicate? - ANSWER -
*abrasive starved wheel
*Flooded or choked wheel
Function of the separator in a centrifugal blast system? - ANSWER -*Control the
sizing of abrasive mix
*Remove sand, spent abrasive (fines), rust, dirt, and other contaminants
*Control abrasive consumption
Inspection concerns during centrifugal blasting include? - ANSWER -*Monitor
dust collector
*Monitor the amperage of the wheel motors /
Low amperage
*Monitor the handling and loading of the conveyor line for contaminates and
possible discontinuities in the steel
*Monitor the speed of the line
*Inspect the steel as it leaves the production line
