NACE COMPREHENSIVE EXAM QUESTIONS
AND SOLUTIONS
◉ 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:
Answer: - to avoid future delamination
- to improve coating adhesion
- to eliminate a source of galvanic corrosion
◉ Which standard defines a "commercially" blast cleaned surface?
Answer: NACE No. 3 / SSPC-SP 6
◉ ISO SA 2-1/2 is a blast cleaning surface that is similar to which
joint standard?
Answer: NACE No. 2 / SP 10
◉ Approximately 75% of premature coating features are caused by
_____
Answer: inadequate or improper surface preparation
◉ NACE SP0178 comparator addresses ___ ___ ___ ___
Answer: - 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?
Answer: - 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)?
Answer: SP 15
◉ When applied to concrete, alkyd coatings will fail prematurely due
to _____
Answer: saponification
◉ Which SSPC Vis 1 rust grade defines a surface covered with both
mill scale and rust?
Answer: Grade B
AND SOLUTIONS
◉ 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:
Answer: - to avoid future delamination
- to improve coating adhesion
- to eliminate a source of galvanic corrosion
◉ Which standard defines a "commercially" blast cleaned surface?
Answer: NACE No. 3 / SSPC-SP 6
◉ ISO SA 2-1/2 is a blast cleaning surface that is similar to which
joint standard?
Answer: NACE No. 2 / SP 10
◉ Approximately 75% of premature coating features are caused by
_____
Answer: inadequate or improper surface preparation
◉ NACE SP0178 comparator addresses ___ ___ ___ ___
Answer: - 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?
Answer: - 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)?
Answer: SP 15
◉ When applied to concrete, alkyd coatings will fail prematurely due
to _____
Answer: saponification
◉ Which SSPC Vis 1 rust grade defines a surface covered with both
mill scale and rust?
Answer: Grade B
