NACE (NATIONAL ASSOCIATION OF
CORROSION ENGINEERS) CIP 2 STUDY
REVIEW WITH QUESTIONS AND CORRECT
ANSWERS 100% VERIFIED
Describe passivation Correct Answer 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
Correct Answer 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 Correct
Answer General and localized
Describe galvanic corrosion Correct Answer 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
Describe cathodic protection Correct Answer 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 Correct Answer
Impressed current and galvanic (sacrificial)
impressed current power sources include: Correct Answer 1.
Generators 2. Fuel cells 3. Wind powered cells 4. Thermoelectric
cells 5. Rectified commercial power 6. Solar Cells
Describe cathodic disbondment Correct Answer The separation
of the coating from the surface through hydroxyl formation due to
increased ( made more negative ) potential.
Describe dehumidification Correct Answer 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 Correct Answer 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.
Describe air turns (air changes) Correct Answer 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
Correct Answer 40%
,Describe two ways to reduce the relative humidity of the boundary
layer Correct Answer Increase the surface temperature and
reduce moisture content by dehumidification
Types of dehumidification equipment include Correct Answer
Refrigeration and desiccant
Describe several benefits of dehumidification Correct Answer
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 Correct Answer
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 Correct Answer USB, IR,
Bluetooth
Some general basic centrifugal blast set ups include Correct
Answer Tumbling mill, multitable, plain table, swing table, custom
designed systems
Centrifugal blasting conveyor systems are commonly used for
cleaning Correct Answer Plate, rolled structural shapes, large
trusses, girders
Portable centrifugal blasting systems can be used on Correct
Answer Ship decks, hull sides, and bottoms. Storage tanks.
Concrete floors. Highways and bridge decks.
Generally centrifugal blast systems are composed of the following
elements Correct Answer 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 Correct Answer 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 Correct Answer An abrasive starved wheel, a flooded or
choked wheel
The functions of the centrifugal blasting machine separator
include Correct Answer 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
Correct Answer Provide consistency of the finish, ensure uniform
abrasive coverage, ensure conditioning of the abrasive for
optimum cleaning, minimize lowest abrasive and machine part
where and reduce downtime for maintenance
Some of the inspection concerns during centrifugal blasting
include Correct Answer Monitor the dust collector, monitor the
amperage of the wheel motors / low amperage, Monitor the
handling in the loading of the conveyor line for contaminants and
possible discontinuities in the steel, monitor the speed of wine,
inspect the steel as it leaves the production line
The WJ-1 (visual cleanliness) is comparable to which abrasive
blast cleaning standard Correct Answer ISO SA 3
CORROSION ENGINEERS) CIP 2 STUDY
REVIEW WITH QUESTIONS AND CORRECT
ANSWERS 100% VERIFIED
Describe passivation Correct Answer 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
Correct Answer 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 Correct
Answer General and localized
Describe galvanic corrosion Correct Answer 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
Describe cathodic protection Correct Answer 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 Correct Answer
Impressed current and galvanic (sacrificial)
impressed current power sources include: Correct Answer 1.
Generators 2. Fuel cells 3. Wind powered cells 4. Thermoelectric
cells 5. Rectified commercial power 6. Solar Cells
Describe cathodic disbondment Correct Answer The separation
of the coating from the surface through hydroxyl formation due to
increased ( made more negative ) potential.
Describe dehumidification Correct Answer 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 Correct Answer 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.
Describe air turns (air changes) Correct Answer 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
Correct Answer 40%
,Describe two ways to reduce the relative humidity of the boundary
layer Correct Answer Increase the surface temperature and
reduce moisture content by dehumidification
Types of dehumidification equipment include Correct Answer
Refrigeration and desiccant
Describe several benefits of dehumidification Correct Answer
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 Correct Answer
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 Correct Answer USB, IR,
Bluetooth
Some general basic centrifugal blast set ups include Correct
Answer Tumbling mill, multitable, plain table, swing table, custom
designed systems
Centrifugal blasting conveyor systems are commonly used for
cleaning Correct Answer Plate, rolled structural shapes, large
trusses, girders
Portable centrifugal blasting systems can be used on Correct
Answer Ship decks, hull sides, and bottoms. Storage tanks.
Concrete floors. Highways and bridge decks.
Generally centrifugal blast systems are composed of the following
elements Correct Answer 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 Correct Answer 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 Correct Answer An abrasive starved wheel, a flooded or
choked wheel
The functions of the centrifugal blasting machine separator
include Correct Answer 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
Correct Answer Provide consistency of the finish, ensure uniform
abrasive coverage, ensure conditioning of the abrasive for
optimum cleaning, minimize lowest abrasive and machine part
where and reduce downtime for maintenance
Some of the inspection concerns during centrifugal blasting
include Correct Answer Monitor the dust collector, monitor the
amperage of the wheel motors / low amperage, Monitor the
handling in the loading of the conveyor line for contaminants and
possible discontinuities in the steel, monitor the speed of wine,
inspect the steel as it leaves the production line
The WJ-1 (visual cleanliness) is comparable to which abrasive
blast cleaning standard Correct Answer ISO SA 3
