NACE CIP 2 EXAM QUESTIONS
AND ANSWERS 100% PASS
Describe passivation - ✔✔Passivation is the formation of a protective oxide Film on the
surface reducing its chemical activity and its ability to corrode
Describe the following factors and how they affect corrosion - ✔✔Oxygen: oxygen
increases the rate of corrosion temperature
Temperature: corrosion usually accelerated with increasing temperature
Chemical salts: increase the rate of corrosion by increasing the efficiency of the
electrolyte
humidity: the wetter the environment, the more corrosion is likely to occur pollutants
and acid gases: all promote corrosion
Two broad categories of corrosion can be described as - ✔✔General and localized
Describe galvanic corrosion - ✔✔Galvanic corrosion is an electrochemical action of two
dissimilar metals in the presence of an electrolyte and an electron conductive path,
Which occurs when the dissimilar metals come into contact
Brittie Donald, All Rights Reserved © 2025 1
,Describe cathodic protection - ✔✔Cathodic protection is the reduction or elimination of
corrosion by making the structure to be protected a cathode by means of impressed
current or attachment to a galvanic anode
The two primary types of cathodic protection are - ✔✔Impressed current and galvanic
(sacrificial)
impressed current power sources include: - ✔✔1. Generators 2. Fuel cells 3. Wind
powered cells 4. Thermoelectric cells 5. Rectified commercial power 6. Solar Cells
Describe cathodic disbondment - ✔✔The separation of the coating from the surface
through hydroxyl formation due to increased ( made more negative ) potential.
Describe dehumidification - ✔✔Dehumidification is the process of removing moisture
vapor from the air to lower its dew point
When planning enclosures the following minimum requirements should be considered
- ✔✔Must be large enough to contain the whole work area.
Not be larger than the performance capabilities of the dehumidification equipment.
Be sturdy enough to hold up to intended work activities, potential loads, and a possible
inclement weather.
Have minimal leakage to maintain proper environmental conditions and ensure the
dehumidification system operates efficiently.
Brittie Donald, All Rights Reserved © 2025 2
,Describe air turns (air changes) - ✔✔The air turnover principal illuminates air
stratification, or layering, in large open spaces by recirculating the hot air that becomes
trapped in the higher spaces.
The number of times it does this per hour is called air turns.
At & below what relative humidity does corrosion virtually cease - ✔✔40%
Describe two ways to reduce the relative humidity of the boundary layer - ✔✔Increase
the surface temperature and reduce moisture content by dehumidification
Types of dehumidification equipment include - ✔✔Refrigeration and desiccant
Describe several benefits of dehumidification - ✔✔Dries the air. Lowers the dew point.
Permits blasting the entire surface. Holds the blast with dry air. Helps in cleaning the
surface. Holds the surface during coating application.
Electronic hygrometers can be used to determine - ✔✔Relative humidity, air
temperature, and dewpoint temperature.
Advanced environmental testing instruments have the ability to store data that can be
transferred to a computer and other devices. Transfer methods include - ✔✔USB, IR,
Bluetooth
Some general basic centrifugal blast set ups include - ✔✔Tumbling mill, multitable,
plain table, swing table, custom designed systems
Brittie Donald, All Rights Reserved © 2025 3
, Centrifugal blasting conveyor systems are commonly used for cleaning - ✔✔Plate,
rolled structural shapes, large trusses, girders
Portable centrifugal blasting systems can be used on - ✔✔Ship decks, hull sides, and
bottoms. Storage tanks. Concrete floors. Highways and bridge decks.
Generally centrifugal blast systems are composed of the following elements -
✔✔Centrifugal abrasive throwing wheel, the blast cabinet, in fixed systems some type
of material handling system, abrasive recycling system, a dust collector and vent pipe
system, abrasives.
The efficiency of the centrifugal blast wheels depends on several factors - ✔✔Abrasive
operating mix, size of the abrasive, velocity of the abrasive coming off the wheel,
quantity and direction of the thrown abrasive, condition of the feed parts.
Little amperage readings on a centrifugal blasting machine could signify - ✔✔An
abrasive starved wheel, a flooded or choked wheel
The functions of the centrifugal blasting machine separator include - ✔✔To control the
sizing of the abrasive mix, to remove sand, spent abrasives, rust, dirt, and any other
contaminants from the abrasive stream, to control abrasive consumption
A well balanced operating mix (working mix) of abrasives will - ✔✔Provide consistency
of the finish, ensure uniform abrasive coverage, ensure conditioning of the abrasive for
Brittie Donald, All Rights Reserved © 2025 4
AND ANSWERS 100% PASS
Describe passivation - ✔✔Passivation is the formation of a protective oxide Film on the
surface reducing its chemical activity and its ability to corrode
Describe the following factors and how they affect corrosion - ✔✔Oxygen: oxygen
increases the rate of corrosion temperature
Temperature: corrosion usually accelerated with increasing temperature
Chemical salts: increase the rate of corrosion by increasing the efficiency of the
electrolyte
humidity: the wetter the environment, the more corrosion is likely to occur pollutants
and acid gases: all promote corrosion
Two broad categories of corrosion can be described as - ✔✔General and localized
Describe galvanic corrosion - ✔✔Galvanic corrosion is an electrochemical action of two
dissimilar metals in the presence of an electrolyte and an electron conductive path,
Which occurs when the dissimilar metals come into contact
Brittie Donald, All Rights Reserved © 2025 1
,Describe cathodic protection - ✔✔Cathodic protection is the reduction or elimination of
corrosion by making the structure to be protected a cathode by means of impressed
current or attachment to a galvanic anode
The two primary types of cathodic protection are - ✔✔Impressed current and galvanic
(sacrificial)
impressed current power sources include: - ✔✔1. Generators 2. Fuel cells 3. Wind
powered cells 4. Thermoelectric cells 5. Rectified commercial power 6. Solar Cells
Describe cathodic disbondment - ✔✔The separation of the coating from the surface
through hydroxyl formation due to increased ( made more negative ) potential.
Describe dehumidification - ✔✔Dehumidification is the process of removing moisture
vapor from the air to lower its dew point
When planning enclosures the following minimum requirements should be considered
- ✔✔Must be large enough to contain the whole work area.
Not be larger than the performance capabilities of the dehumidification equipment.
Be sturdy enough to hold up to intended work activities, potential loads, and a possible
inclement weather.
Have minimal leakage to maintain proper environmental conditions and ensure the
dehumidification system operates efficiently.
Brittie Donald, All Rights Reserved © 2025 2
,Describe air turns (air changes) - ✔✔The air turnover principal illuminates air
stratification, or layering, in large open spaces by recirculating the hot air that becomes
trapped in the higher spaces.
The number of times it does this per hour is called air turns.
At & below what relative humidity does corrosion virtually cease - ✔✔40%
Describe two ways to reduce the relative humidity of the boundary layer - ✔✔Increase
the surface temperature and reduce moisture content by dehumidification
Types of dehumidification equipment include - ✔✔Refrigeration and desiccant
Describe several benefits of dehumidification - ✔✔Dries the air. Lowers the dew point.
Permits blasting the entire surface. Holds the blast with dry air. Helps in cleaning the
surface. Holds the surface during coating application.
Electronic hygrometers can be used to determine - ✔✔Relative humidity, air
temperature, and dewpoint temperature.
Advanced environmental testing instruments have the ability to store data that can be
transferred to a computer and other devices. Transfer methods include - ✔✔USB, IR,
Bluetooth
Some general basic centrifugal blast set ups include - ✔✔Tumbling mill, multitable,
plain table, swing table, custom designed systems
Brittie Donald, All Rights Reserved © 2025 3
, Centrifugal blasting conveyor systems are commonly used for cleaning - ✔✔Plate,
rolled structural shapes, large trusses, girders
Portable centrifugal blasting systems can be used on - ✔✔Ship decks, hull sides, and
bottoms. Storage tanks. Concrete floors. Highways and bridge decks.
Generally centrifugal blast systems are composed of the following elements -
✔✔Centrifugal abrasive throwing wheel, the blast cabinet, in fixed systems some type
of material handling system, abrasive recycling system, a dust collector and vent pipe
system, abrasives.
The efficiency of the centrifugal blast wheels depends on several factors - ✔✔Abrasive
operating mix, size of the abrasive, velocity of the abrasive coming off the wheel,
quantity and direction of the thrown abrasive, condition of the feed parts.
Little amperage readings on a centrifugal blasting machine could signify - ✔✔An
abrasive starved wheel, a flooded or choked wheel
The functions of the centrifugal blasting machine separator include - ✔✔To control the
sizing of the abrasive mix, to remove sand, spent abrasives, rust, dirt, and any other
contaminants from the abrasive stream, to control abrasive consumption
A well balanced operating mix (working mix) of abrasives will - ✔✔Provide consistency
of the finish, ensure uniform abrasive coverage, ensure conditioning of the abrasive for
Brittie Donald, All Rights Reserved © 2025 4
