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How is the process of steel corrosion ALWAYS described?
electrochemical
Based on the galvanic series presented in the NACE CIP Level 1 Manual, which three can be used effectively as galvanic anodes for carbon steel?
zinc, aluminum, magnesium
A decrease in temperature will generally cause the corrosion rate to _____
decrease
The electrolyte is a medium which carries the following type of current?
Ionic
Corrosion occurring uniformly across a surface is called _____
general corrosion
When a conflict occurs on a coatings project, as the inspector, the preferred first course of action is to _____
actively listen and endeavor to understand the positions of others
A proper coating specification should contain information regarding ____, ____, and ____
surface preparation standards, safety, and locations to be used
Is it ever okay to accept a gift from a contractor?
NO
What should you do if you find discrepancies between the specification and the coating manufacturer's technical data sheet?
seek written clarification from the owner's representative
What are the general components of inspection reports?
- results of inspection tests
- location(s) of work
- details of preparation and application
Inspection reports typically provide sufficient detail permitting the owner to evaluate ___ ___ ___ ___
- contractor's performance
- inspector's performance
- job progress
- work interruptions
As an inspector headed to the job site for the first time, where would you always find instruction regarding appropriate types of PPE?
Safety Data Sheet (SDS), previously called MSDS
Materials inventory report should contain which of the following?
- quantity of each component of each material onsite
- material batch numbers
- date of materials arrival at job site and storage information
The primary function of the coating inspector is _____
specification compliance
High humidity in the air during coating application can cause _____
solvent entrapment
The temperature at which moisture condenses on a surface is called _____
dew point
Where should the steel surface temperature reading be taken?
at the actual work location
What type of water should be added to a sling psychrometer?
distilled
Which type of coating is manufactured with the specific components added to slow down the activity of the electrochemical cell?
inhibitive
Which coating component forms a stable film that retains its characteristic properties?
binder/resin
A barrier coating interrupts the ______ of the electrochemical cell.
electrolyte
List the three mechanisms by which coatings adhere to a substrate
1. Polar
2. Chemical
3. Mechanical
What is the rule for coating work when it comes to Dew Point and Steel Temperature?
Steel Temperature must be 5 degrees less than the Dew Point
What characteristics of solvents influence coatings?
- solvency power
- volatility
The contractor's sling psychrometer gives a different reading than your electric hygrometer. What would you do first as an inspector?
verify calibration of both instruments
Which of the following coating are co-reacting?
- polyurethane
- epoxy
Fusion Bond Epoxy (FBE) is most commonly used to coat ____
pipe
Which coatings may require external moisture to cure?
- single component polyurethane
- solvent borne inorganic zinc
Amine blush is likely to occur with which type of coating?
epoxy
Which type of coating cures the fastest?
Polyurea
When an inorganic Zinc Rich primer is applied too heavily a common result is ______
mud cracking
Commonly used primers for steel structures are ?
- epoxy
- inorganic zinc
- organic zinc
Coatings that cure by polymerization are _____
convertible
Water-borne latex coatings cure by a process known as _____
coalescence
On a blast-cleaned surface, ultraviolet ligt can reveal _____
oil
You are an inspector on a project with a sprayed polyurethane coating. The probable safety concern is _______
isocyanates
The requirements of a coatings project are defined by which document?
coating specification
A prejob conference is useful for discussions on which of the following?
- safety
- cleaning
- application
- schedule
You are the inspector on a project where the specified level of cleanliness is "near white". Which standard would you follow?
NACE No. 2 / SSPC-SP 10
The power tool standard for cleaning to bare metal with minimum profile of 1 Mil (25.4 microns) is ______
SSPC-SP 11
What is referenced by ISO 8503?
Grit and Shot profile comparators
List the reasons that mill scale is typically removed:
- to avoid future delamination
- to improve coating adhesion
- to eliminate a source of galvanic corrosion
Which standard defines a "commercially" blast cleaned surface?
NACE No. 3 / SSPC-SP 6
ISO SA 2-1/2 is a blast cleaning surface that is similar to which joint standard?
NACE No. 2 / SP 10
Approximately 75% of premature coating features are caused by _____
inadequate or improper surface preparation
NACE SP0178 comparator addresses ___ ___ ___ ___
- butt welds
- lap welds
- radius edges
- finishing grades of weld
You are on a project where Testex Tape is specified to determine surface profile by ASTM D4417 Method C. What is likely to cause reading errors?
- dust on the surface
- using incorrect grade of tape
Which power tool cleaning standard describes a surface free of all oil, grease, dirt, rust, coatings, mill scale, oxide and other foreign matter yet permits random staining while requiring a minimum profile of 25 microns (1 mil)?
SP 15
When applied to concrete, alkyd coatings will fail prematurely due to _____
saponification
Which SSPC Vis 1 rust grade defines a surface covered with both mill scale and rust?
Grade B
You are on a job and observe the coating is being applied in an unacceptable manner. As an inspector you should ____ and ____
- report to the contractor's supervisor
- report to the owner's representative
Which standard gives guidelines for how many DFT measurements should be taken in a given area?
SP 2
A pre-job conference should be held
after bids have been submitted and contracts signed
What are the goals of a pre-job conference?
- review and discuss the scope of work
- discuss lines of communication between parties
- discuss and clarify inspector's responsibilities and authority
What is one of the inspector's roles at a pre-job conference?
clarify reporting requirements
According to ASTM D 4417 Method B-2014, when taking measurements using a profile gauge , at each location make ______
ten (10) readings per location, recording the maximum value. Determine mean for all maximum values as the reported profile
Daily reports or weekly reports should be written in ___
pen
What can inspection records be used for?
- help in resolving legal or arbitration disputes
- assist owners in the evaluation of applicator performance
- assist owners in the evaluation of inspector performance
- determine total cost of the project
The inspector's log book is a personal chronicle of what happened on a daily basis and is usually ____
retained by the inspector
Generally speaking, on a typical coating project overall safety is the responsibility of _____
a certified safety professional
When applying coatings, generally high relative humidity _____
slows solvent evaporation
A typical daily report should include ___ ___ ___
- description of manpower and equipment used
- explanation of work stoppages
- list of environmental conditions
What is an advantage of airless spray compared to conventional air spray?
faster production rate
What inspection challenges do you expect specific to working inside containment?
- illumination
- control of temperature and humidity
Improper atomization of the coating may cause ___ ___ ___
- uneven DFT
- dry spray
- overspray
High viscosity due to low temperature should be corrected by ___ ___
- adding extra thinner
- heating the coating
SSPC Technology Guide No.12 states "Surface preparation and coating applications must have a minimum of how man candles / lumens?
50 foot candles (538 lumens)
One major advantage of conventional spray is ___
applicator control
When using WFT comb/gauge, the measurment should be taken when?
immediately after the coating is applied
When reporting the wet film thickness from a wet film thickness comb/gauge you report which tooth?
the last tooth that has coating on it
Solventbourne inorganic zinc primer is being applied with airless spray to a complex bridge with difficult access for application. The contractor is having difficulty with high DFT resulting in mudcracking. What application method might be a good alternative?
conventional spray
An advantage of magnetic pull-off DFT banana gauge is that it is ____
intrinsically safe
You must take a measurement with a dial-type magnetic pull-off dry film thickness gauge. What is the minimum recommended distance away from an edge that you can reliably take a measurement?
2.5 cm (1 inch)
The testing procedure for water soluable ferrous salts is ____
potassium ferricyannide test
A well written specification requires a surface profile depth defined as ____
a range of measurements
If there is a conflict between the project specification and manufacturer's product data sheet, which do you follow?
Follow the specification
What document should be reviewed prior to arriving to a job site to determine if amines or polyamides will be present?
Safety Data Sheet (SDS), formerly MSDS
Specification term: Will
The owner is responsible for performing the action
Specification term: Should
The contractor is strongly recommended but not required to preform the action
Specification term: May
The contractor has open choice on actions
Specification term: Shall
The contractor is required to perform this action
Adding an incorrect solvent to a coating may cause ____
non-drying or non-curing
If you find chalking on pre-existing coating, what type of coating would you find suspect?
Epoxy
After a cold night, you find that the epoxy amine midcoat applied the day before has blushed. The optimum resolution when amine blush is found is to ____
consult the coating manufacturer
The formation of small bowl-shaped depressions in the coating film caused by air trapped in the coating is called ______
cratering
Failure of a plural component coating to cure is frequently caused by _____
wrong mix ratio
As an inspector on a bridge painting project, prior to abrasive blasting, which blasting safety items would you expect to see?
- deadman valve
- connections wired/clipped
- supplied air hood
One of the most common causes of blisters in a coating film is _____
surface contamination
You have been inspecting a tank repainting project and suspect that the surface was not cleaned properly, but coating has already been applied, What should you do?
consult the owner for guidance
You are the inspector on a painting project prior to airless spray application. Which of the following airless spray safety items would you expect to see?
- tip guard
- connections wired/clipped
- gun safety
Can a holiday detector be used for conductive coating on non-conductive surface?
No
According to NACE SP0188, the wetted sponge is moved at a maximum rate of ____
1 linear foot per second (30 cm)
Which standard would you reference if you notice blisters in a variety of shapes and sizes?
ASTM D714
When are NACE international surface preparation standards considered binding?
when specified in the contract documents
You are preforming holiday testing on a pipe covered in dew. The reason you are receiving erroneous readings is ______
telegraphing
Which joint NACE/SSPC abrasive blasting standard states that "Random staining shall be limited to no more than 33% of each unit area of surface"?
NACE No. 3 / SSPC-SP 6 Commercial Blast Cleaning
Which blasting standard allows for traces of tightly adherent mill scale, rust, and tightly adherent thin coatings up to 10% ?
NACE No. 8 / SSPC-SP 14
According to NACE No.4/SSPC SP-7, mill scale, rust, and paint are considered adherent if they cannot be removed by _____
lifting with a dull putty knife
ISO 8501 ST-3 is the standard for which of the following?
very thorough hand and/or power tool cleaning
Which standard requires a "commercial grade" power tool cleanliness?
SP 15