NACE Level 1 Study Review Practice Exam.
Examples of corrosion - CORRECT ANSWER Rust, scaling, discoloration, oxidation, pitting
Percent iron in mild carbon steel - CORRECT ANSWER 98-99%
passivation - CORRECT ANSWER formation of surface layer of substrate that slows down corrosion. Iron...
NACE Level 1 Study Review Practice
Exam.
Examples of corrosion - CORRECT ANSWER Rust, scaling, discoloration, oxidation, pitting
Percent iron in mild carbon steel - CORRECT ANSWER 98-99%
passivation - CORRECT ANSWER formation of surface layer of substrate that slows down corrosion. Iron
alone does not form such a barrier
Corrosion is what type of process? - CORRECT ANSWER Electrochemical. Both electrons and ions carry
the corrosion current
voltage = ?? - CORRECT ANSWER voltage = current x resistance
four components of the corrosion cell - CORRECT ANSWER anode, cathode, electrolyte, metallic
pathway
role of anode in corrosion cell - CORRECT ANSWER the part of the metal that corrodes (ie disolves in the
electrolyte)
Where does metal deterioration occur? - CORRECT ANSWER Anode
charge of anode? - CORRECT ANSWER Negative. It loses electrons to the cathode
role of cathode in corrosion cell - CORRECT ANSWER where the electrons are consumed
return path (the metallic pathway) - CORRECT ANSWER connects the anode and the cathode and allows
passage of electrons, generated at the anode, to the cathode
, role of electrolyte in corrosion cell - CORRECT ANSWER Medium that conducts ionic (not electronic)
current
Cause of fish eyes (cissing) - CORRECT ANSWER contamination such as grease, oil, or silicon
type of water for sponge in low voltage holiday detector? - CORRECT ANSWER tap water
High voltage holiday detector usable on concrete? - CORRECT ANSWER Yes
Excess moisture on coated surface can cause false indications by creating a path from coated surface to
pinhole. What is this called? - CORRECT ANSWER telegraphing
Random staining limited to no more than 33% standard - CORRECT ANSWER NACE 3 SSPC SP 6
Commercial Blast Cleaning
ISO 851 ST-3 - CORRECT ANSWER commercial grade power tool cleaning
grounding the pump and and fluid hose in airless spray prevents? - CORRECT ANSWER static sparking
does the product data sheet PDS override the coating products in the spec? - CORRECT ANSWER No
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