NACE CIP Level 1 Exam Questions Correctly Answered.
what's a coating? - CORRECT ANSWER a liquid, liquefiable, or mastic (thick film) composition that, after application to a surface, is converted into a solid, protective, decorative, or functional adherent film.
What's the primary purpose fo...
NACE CIP Level 1 Exam Questions
Correctly Answered.
what's a coating? - CORRECT ANSWER a liquid, liquefiable, or mastic (thick film) composition that, after
application to a surface, is converted into a solid, protective, decorative, or functional adherent film.
What's the primary purpose for applying industrial coating? - CORRECT ANSWER to prevent or limit
contact between a metal substrate and its corrosive environment. (In order for the coating tube able to
protect against corrosion.)
What is paint used for? - CORRECT ANSWER aesthetic or decorative purpose
What is coating used for? - CORRECT ANSWER for performance or protective purposes
Four reasons for coatings in industrial environments - CORRECT ANSWER Aesthetics
Performance requirements
Safety identification
Corrosion prevention and control
What's corrosion? - CORRECT ANSWER the deterioration of a metal or alloy that results from an
electrochemical reaction with its environment.
Anode - CORRECT ANSWER The area of the metal surface that corrodes.
The metal oxidizes(gains oxygen) causing it to lose mass and dissolve into the electrolyte. The metal that
dissolves does so in the form of positively charged cations that then migrate to the cathode through the
electrolyte.
Oxidation - CORRECT ANSWER A chemical reaction that occurs at the anode where the metal losses
electrons.
, Cathode - CORRECT ANSWER The area of the metal surface that reduces (loses oxygen), does not
corrode and is protected. The metal forms negatively charged anions that migrate to the anode through
the electrolyte. Electrons flow from the anode toward the cathode in the metallic pathway.
Reduction - CORRECT ANSWER A chemical reaction that occurs at the cathode that involves the gain of
electrons to the metal. Reduction and oxidation always occur together through an exchange of electrons
at specific sites on the metal surface
Metallic pathway - CORRECT ANSWER Connects the anode and cathode and allows the passage of
electrons generated at the anode to the cathode. The metallic pathway is often the underlying metal
substrate
Electrolyte - CORRECT ANSWER A conductive medium in which ions are carried from the anode to the
cathode. The electrolyte is any solution capable of conducting electricity, such as water.
Cathodic protection - CORRECT ANSWER adds a sacrificial metal or anode to a system that then
corrodes instead of the core asset.
Oxygen - CORRECT ANSWER increases the rate of corrosion. Corrosion can take place in an oxygen-
deficient environment, but the rate of the corrosion reaction is generally much slower
Water - CORRECT ANSWER like oxygen, influences the rate of corrosion, Having a readily available
electrolyte results on the corrosion process occurring more frequently and the metal degrading faster.
Salts - CORRECT ANSWER increase the rate of corrosion by increasing the conductivity of the electrolyte.
This is the result of exposing a surface to an environment containing chlorides in the air, such as a
coastal or marine environment. The most common chemical salt is sodium chloride, a major element of
seawater.
Coating help minimize corrosion by - CORRECT ANSWER forming a physical barrier that prevents the
electrolyte from encountering the substrate. Coatigs provide this protection through three different
mechanisms, which are barrier, sacrificial, and inhibitive.
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