TOOLS AND PROCEDURES WORKBOOK
SOLVED QUESTIONS COMPILATION
◉ A barrier coating interrupts the ______ of the electrochemical cell.
Answer: electrolyte
◉ List the three mechanisms by which coatings adhere to a
substrate
Answer: 1. Polar
2. Chemical
3. Mechanical
◉ What is the rule for coating work when it comes to Dew Point and
Steel Temperature?
Answer: Steel Temperature must be 5 degrees less than the Dew
Point
◉ What characteristics of solvents influence coatings?
Answer: - solvency power
- volatility
,◉ The contractor's sling psychrometer gives a different reading than
your electric hygrometer. What would you do first as an inspector?
Answer: verify calibration of both instruments
◉ Which of the following coating are co-reacting?
Answer: - polyurethane
- epoxy
◉ Fusion Bond Epoxy (FBE) is most commonly used to coat ____
Answer: pipe
◉ Which coatings may require external moisture to cure?
Answer: - single component polyurethane
- solvent borne inorganic zinc
◉ Amine blush is likely to occur with which type of coating?
Answer: epoxy
◉ Which type of coating cures the fastest?
Answer: Polyurea
,◉ When an inorganic Zinc Rich primer is applied too heavily a
common result is ______
Answer: mud cracking
◉ Commonly used primers for steel structures are ?
Answer: - epoxy
- inorganic zinc
- organic zinc
◉ Coatings that cure by polymerization are _____
Answer: convertible
◉ Water-borne latex coatings cure by a process known as _____
Answer: coalescence
◉ On a blast-cleaned surface, ultraviolet ligt can reveal _____
Answer: oil
◉ You are an inspector on a project with a sprayed polyurethane
coating. The probable safety concern is _______
Answer: isocyanates
, ◉ The requirements of a coatings project are defined by which
document?
Answer: coating specification
◉ A prejob conference is useful for discussions on which of the
following?
Answer: - 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?
Answer: 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 ______
Answer: SSPC-SP 11
◉ What is referenced by ISO 8503?
Answer: Grit and Shot profile comparators
◉ List the reasons that mill scale is typically removed: