Preservations & Coatings DVA 

Question 1 of 50. 

In Corrosion Cell, which areas will loosen and dissolve in the electrolyte? 

Cathode  

Electrolyte  

Anode  

Metallic Pathway  

 

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Question 2 of 50. 

What can cause a coating film to wrinkle? 

A. The surface coating film drying faster than the coating below  

B. The spray gun is too close to the surface  

C. Too much thinner in the coating  

Both B and C  

 

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Question 3 of 50. 

Cathodic Protection: 

Will provide sufficient electrons opposing steel releasing electrons  

Will force the steel to become an anode  

Will accelerate steel releasing electrons  

Will provide barrier protection for steel against moisture  

 

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Question 4 of 50. 

What will cause premature coating film failure? 

Selecting the wrong coating system; not compatible with the environment  

The coatings are not compatible with each other  

Poor surface preparation and coating application  

All of the above  

 

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Question 5 of 50. 

Rough welding should be ground smooth for: 

Pre-surface preparation  

Post-surface preparation  

No need; the abrasive blasting will do this  

None of the above  

 

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Question 6 of 50. 

Two types of surface preparation before the applications of coatings are: 

A. Cleaning the surface  

B. Roughening the surface  

C. Heat treatment  

Both A and B  

 

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Question 7 of 50. 

Which of following statements are true about the Passivation Layer of aluminum? Select all that apply.

It is a porous layer over the metal surface  

It is a thick layer which loosely adheres to the metal surface  

It tightly adheres to the metal surface  

It is not a porous layer that prevents moisture and oxygen reaching the bare metal  

   

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Question 8 of 50. 

What causes blister defects on the coating film?

 

Solvent entrapment  

Moisture- or salt-contaminated surface  

Cathodic disbanding  

All of the above  

 

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Question 9 of 50. 

When should grease and oil be removed from steel surfaces? 

Before abrasive blast cleaning  

After abrasive blast cleaning  

It does not need to be removed  

At any time  

 

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Question 10 of 50. 

Sharp edges and corners should be ground smooth before painting application is applied.

True False

    

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Question 11 of 50. 

In the coating specification, the DFT of epoxy primer is 50-75 microns, the epoxy primer has 75% solid by volume. The coating specifications require that 10% thinner be added to epoxy primer for coating application. What range of WFT will arrive at the target DFT range? 

67-100  

70-100  

67-110  

73-110  

 

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Question 12 of 50. 

Pitting will: 

Slow down the corrosion rate  

Accelerate the corrosion rate  

 

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Question 13 of 50. 

The selected coating system must be: 

Compatible with other coatings  

Appropriate for service environment  

Compatible with the substrate  

All of the above  

 

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Question 14 of 50. 

What kind of deficiencies will accelerate coating deterioration? 

Shelf life expiration  

Incompatibility between each coating  

Incorrectly formulated coatings  

All of the above  

 

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Question 15 of 50. 

What defects of a coating film can occur if the relative humidity is very high during the coating curing process? 

Blushing may occur  

Solvent may entrap beneath the coating film  

The coating may not cure properly  

All of the above  

 

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Question 16 of 50. 

Which of following is not included in the four elements of Corrosion Cell?

 

Cathode  

Anode  

Metallic Pathway  

Oxygen  

 

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Question 17 of 50. 

In order to build an even more consistent film, you should overlap each type of pass.

True False

    

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Question 18 of 50. 

Coating Inspector responsibilities include: 

Verifying that the work complies with the specifications  

Supervising coating activities  

Proofreading Coating Specification  

All of the above  

 

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Question 19 of 50. 

Factors affecting paint transfer efficiency are: 

Distance from spray gun to item  

Item shape  

Type of application equipment  

All of the above  

 

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Question 20 of 50. 

In the coating specification, the DFT of epoxy primer is 50-75 microns and the epoxy primer has 75% solids by volume. What range of WFT will arrive at the target DFT range? 

35-55  

50-75  

67-100  

100-150  

 

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Question 21 of 50. 

Mill Scale: 

Will tightly adhere to steel surface even if water is present on the surface  

Is softer than the parent steel  

Protects pure steel against corrosion  

Becomes cathode relative to pure steel when water is present on the surface  

 

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Question 22 of 50. 

The final surface preparation shall not be carried out during which of following conditions: 

Surface temperature is at least 3º Celsius above the dew point temperature  

Relative humidity exceeds 85%  

Dew point temperature is below surface temperature by at least 3º Celsius  

All of the above  

 

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Question 23 of 50. 

Post-surface preparation inspections include: 

Inspection of cleaned steel surface for grease and oil  

Verifying the level of cleanliness of steel surfaces  

Verifying the surface profile  

All of the above  

 

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Question 24 of 50. 

What kind of substrate will lead the coating film to premature failure? 

Irregular surface  

Inaccessible surface  

Retention of water  

All of the above  

 

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Question 25 of 50. 

What defect can cause the coating film to have pinpoint rust? 

High surface profile  

Too much zinc pigment is added to the coating  

Low surface profile  

The pigment settles out during spray coating application  

 

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Question 26 of 50. 

Is it necessary for Intertek Coating Inspectors to monitor and record coating mixing processes and procedures and why? 

Yes. If errors occur during mixing process, it can lead to premature coating failure.  

No. Coating inspectors only verify the quality of coating film.  

 

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Question 27 of 50. 

What reasons will cause paint to sag? 

Too much thinner added  

Too much paint reaches the surface  

The spray gun being too close to the surface  

All of the above  

 

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Question 28 of 50. 

Pitting will present when: 

Mill scale is present  

Oxygen Corrosion Cell is present  

Coating film has broken  

All of the above  

 

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Question 29 of 50. 

The standard of SSPC-SP3 includes: 

A. Clean all tightly adhering materials away from the surface  

B. Clean all loosely adhering rust and paint away from the surface  

C. Clean all loosely adhering mill scale away from the surface  

Both B and C  

 

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Question 30 of 50. 

Which surface preparation standard is recommended for thermal spray metal coating? 

SSPC-SP5 / ISO Sa3  

SSPC-SP7 / ISO Sa1  

SSPC-SP15  

SSPC-SP6 / ISO Sa2  

 

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Question 31 of 50. 

Poorly written coating specifications may result in: 

Project being successfully completed on time  

High quality performance of coatings  

High quality control  

Disputes  

 

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Question 32 of 50. 

Which of the following statements is true relating to surface preparation? 

The cleanliness and surface profile should be inspected separately  

Surface preparation is only to clean the steel surface  

The surface roughness is stipulated by ISO standards  

Abrasive blast cleaning will not clean and roughen a surface at the same time  

 

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Question 33 of 50. 

What may lead pinpoint rusting to appear over Dry Coating Film? 

Surface profile is too high  

Surface profile is too low  

Hardener may not be blended into the coating  

DFT is too thick  

 

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Question 34 of 50. 

According to pre-painting inspections, which following statement is true? 

Thinning materials and amount do not need to be monitored  

Mixing procedure does not need to be monitored; it is up to coating applicators  

It is not necessary to inspect coating storage  

Color of paint should be verified according to coating specification  

 

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Question 35 of 50. 

What can cause a dry coating film to crack? 

The re-coat interval expired  

The coating film dried too fast  

Too much thinner added to the coating  

The coating film is too thick  

 

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Question 36 of 50. 

What must be removed from compressed air during conventional air spray of paints? 

A. Oil  

B. Water  

C. Air  

Both A and B  

 

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Question 37 of 50. 

Which following surface is not suitable for roller application of paints? 

A. Large and flat surface  

B. Pores and cracks  

C. Irregular surface  

Both B and C  

 

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Question 38 of 50. 

What can cause an uncured coating film to blush (light color spot)? 

Too much hardener (curing agen) added to coating  

High temperature during curing period  

High-humidity environment  

Low wet coating film  

 

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Question 39 of 50. 

Before abrasive blast cleaning is done, the following should be taken care of: 

Weld fill the crevices and pits when the depth exceeds the requirements in the specification  

Grinding the weld spatters  

Grinding the sharp edges and corners  

All of the above  

 

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Question 40 of 50. 

Which following reasons will lead to overspray during paint application? 

A. The gun too far from the surface  

B. Rapid solvent evaporation  

C. The gun too close to the surface  

Both A and B  

 

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Question 41 of 50. 

The standards of SSPC-SP11 includes: 

No visible oil and grease remaining on the surface  

All visible contaminants are cleaned away  

Having a minimum of 25 microns of surface profile  

All of the above  

 

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Question 42 of 50. 

Oxygen Corrosion Cell will occur when: 

A. There is a break in the coating film  

B. An overlap occurs in steel plates  

C. Dissimilar metals connect  

Both A and B  

 

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Question 43 of 50. 

Is it possible to clean the steel surface by hand tools or power tools for metal thermal spray?

Yes No

    

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Question 44 of 50. 

Protective Coatings prevent steel from corrosion by means of: 

Galvanic protection  

Inhibitive protection  

Barrier protection  

All of the above  

 

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Question 45 of 50. 

The disadvantage of airless sprayers are: 

Reduced quality finish  

Reduced operator control  

Hazardous spray pressures  

All of the above  

 

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Question 46 of 50. 

Which following statements are true relative to Oxygen Corrosion Cell? 

High oxygen area will allow the metal to rust in the electrolyte  

Low oxygen area acts as cathode  

High oxygen area acts as anode  

Low oxygen area acts as anode  

 

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Question 47 of 50. 

The standards of SSPC-SP 10 include: 

The remains must tightly adhere on the surface  

The staining does not exceed 5% of each 9 square inches (58 cm²)  

Only loosely adhering materials are cleaned away  

The staining is not limited  

 

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Question 48 of 50. 

What can cause coating film to disbond from the under layer surface? 

Coated over moisture or damp surface  

Coated over oil/grease combination  

Coated over dirty surface  

All of the above  

 

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Question 49 of 50. 

What kind of thinner can be used to thin the coating? 

The fresh thinner that is recommended by the coating manufacturer  

Any fresh thinner  

Out-of-date thinner  

Any thinner can be used to thin paint  

 

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Question 50 of 50. 

Conventional air spray atomizes the paint with: 

High hydraulic pressure  

Compressed air  

 

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