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Module 1: Corrosion Knowledge Check

By admin / December 18, 2017

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Question 1 of 25

1. Question
The mixing and thinning instructions, volume solids content and curing schedule for a coating are located on the:
- A. Safety Data Sheet (SDS)
- B. The paint can lid
- C. The Product Data Sheet (PDS)
- D. The batch analysis
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Question 2 of 25

2. Question
Some multiple component coatings require an induction period, which:
- A. Is also known as “sweat-in” or “digestion” time
- B. When the components of the coating chemically blend
- C. Part of the pot life, but not the “usable” pot life
- D. All of the above
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Question 3 of 25

3. Question
Shelf life is:
- A. The period of time that an opened product can be stored and used (from the date of manufacture)
- B. The period of time that an unopened coating product can be stored and used (from the date of manufacture)
- C. The period of time that a multiple component product can be mixed, then stored and used (from the date of manufacture)
- D. Same as the pot life
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Question 4 of 25

4. Question
The information provided by the manufacturer’s PDS (product data sheet):
- A. Is carefully regulated by SSPC and ASTM
- B. Requires a uniform format containing specific information
- C. Lists any information a coating manufacturer decides to list in the format of their own choosing
- D. Is primarily a marketing brochure and has little field value
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Question 5 of 25

5. Question
When there is conflicting information between the specification and the PDS (product data sheet, the:
- A. Specification is the governing document
- B. PDS is the governing document
- C. Contractor can choose to follow the specification or the PDS, provided they document the choice
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Question 6 of 25

6. Question
A material receipt inspection involves:
- A. Opening the products to examine the condition
- B. Conducting tests to verify initial color and gloss
- C. Verifying that the products ordered for the job were the products received on the jobsite
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Question 7 of 25

7. Question
When measuring ambient conditions, it is important to verify that the temperature of the surface is:
- A. At least 5°F higher than the dew point temperature
- B. The same temperature as the dew point temperature
- C. 5°F lower than the dew point temperature
- D. 5°F higher than the air temperature
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Question 8 of 25

8. Question
Dew point is:
- A. The amount of moisture in the air
- B. The difference between the wet and dry bulb thermometers
- C. The temperature at which the air is completely saturated
- D. The temperature at which moisture from the air condenses on a surface
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Question 9 of 25

9. Question
Relative humidity is:
- A. The amount of moisture in the air
- B. The difference between the wet and dry bulb thermometers
- C. The temperature at which the air is completely saturated
- D. The temperature at which moisture from the air condenses on a surface
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Question 10 of 25

10. Question
The air temperature is 82^oF and the wet bulb temperature is 60^oF. The two values used to look-up the relative humidity in the Psychrometric Tables are:
- A. 82 and 60
- B. 82 and 142
- C. 60 and 22
- D. 82 and 22
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Question 11 of 25

11. Question
Material heating requirements for plural component spray are found:
- A. On the plural component spray rig
- B. On the coating manufacturer’s instructions
- C. On the can labels
- D. Plural component spray doesn’t use heat to reduce viscosity. Thinner must be used.
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Question 12 of 25

12. Question
A limitation to roller application is:
- A. It may require multiple applications to build the coating to the correct thickness
- B. It does not produce a smooth film
- C. Nap may become lodged in the dry film
- D. All of the above
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Question 13 of 25

13. Question
If SSPC-PA2 is specified for dry film thickness measurement and a non-conforming area is found, which of the following statements is true:
- A. Measure in 6 directions radiating out from the non-conforming area until 2 consecutive 100 square foot areas conform to the specification.
- B. Measure in 6 directions radiating out from the non-conforming area until 5 consecutive spots conform to the specification, up to the area coated during the work shift.
- C. Measure in 8 directions radiating out from the non-conforming area until 3 consecutive 100 square foot areas conform to the specification.
- D. Measure in 8 directions radiating out from the non-conforming area until 2 consecutive spots conform to the specification, up to the area coated during the work shift.
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Question 14 of 25

14. Question
If SSPC-PA2 is specified for dry film thickness measurement and there is 20,000 square feet of coated surface, how many spot measurements are necessary?
- A. 22
- B. 110
- C. 20
- D. 330
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Question 15 of 25

15. Question
If SSPC-PA2 is specified for dry film thickness measurement and there is 20,000 square feet of the coated surface, how many areas must be measured?
- A. 22
- B. 3
- C. 19
- D. 5
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Question 16 of 25

16. Question
If SSPC-PA2 is specified for dry film thickness measurement and there is 20,000 square feet of the coated surface, what is the minimum number of gage readings that must be obtained?
- A. 22
- B. 110
- C. 330
- D. 3
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Question 17 of 25

17. Question
The specified coating thickness is 5-7 mils. SSPC-PA2 coating thickness standard is invoked by the specification and Coating Thickness Restriction Level 3 (default) is required. What is the tolerance of the spot measurements?
- A. 5-7 mils
- B. 4-8.4 mils
- C. 5-9 mils
- D. 4-10 mils
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Question 18 of 25

18. Question
Which of the following statements regarding low voltage wet sponge pinhole testing is false?
- A. Requires a wetting agent for coating thicknesses in excess of 10 mils
- B. Can only be performed on non-conductive coatings
- C. The wand is traversed at a rate of 2 feet per second
- D. Is not recommended between coats
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Question 19 of 25

19. Question
Which of the following is not associated with plural component spray?
- A. Coating temperature
- B. Component ratio
- C. Induction time
- D. Internal mix
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Question 20 of 25

20. Question
The output pressure of a 45:1 airless spray pump when the regulator is set at 60 psi is:
- A. 60 psi
- B. 4500 psi
- C. 1800 psi
- D. 2700 psi
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Question 21 of 25

21. Question
One day after the application of an epoxy primer you notice a pale-yellow haze on the surface of the coating that is somewhat oily. What do you suspect occurred?
- A. There was water in the compressed air used to operate the airless spray pump
- B. Oil got splashed onto the coating overnight
- C. Cool damp/high humidity overnight conditions caused an amine blush to form
- D. The coating was mis-mixed
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Question 22 of 25

22. Question
Calculate the test voltage for performing high voltage holiday detection based on a coating that is 36 mils thick.

Note: K*√ T, where T = coating thickness and K = 525 for coatings < 40 mils thick, or 1250 for coatings > 40 mils thick
- A. 3,150 volts
- B. 18,900 volts
- C. 7,500 volts
- D. Should use low voltage pinhole detection for this coating thickness
Correct

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Question 23 of 25

23. Question
Which of the following statements is TRUE regarding holiday/pinhole detection?
- A. Used on nonconductive coatings applied to nonconductive substrates
- B. Used on nonconductive coatings applied to conductive substrates
- C. Used on conductive coatings applied to conductive substrates
- D. Used on conductive coatings applied to nonconductive substrates
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Question 24 of 25

24. Question
Which of the following statements is FALSE for conventional (air) spray?
- A. There are two regulators on the pressure pot
- B. Use of clean, dry compressed air is important
- C. The applicator has a lot of control
- D. Proper gun-to-surface distance is 12-18 inches
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Question 25 of 25

25. Question
What is the proper procedure when mixing a zinc-rich primer?
- A. Pour the liquid into the zinc powder component
- B. Cast the zinc powder into the liquid after it is applied to the surface, but before it dries
- C. Slowly pour the liquid into the zinc powder component while under agitation
- D. Slowly sift the zinc powder into the liquid component(s) while under agitation
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