What is the function of the electrolyte? - CORRECT ANSWER-Allows the passage of
ions to connect the corrosion cell
What is the function of the metallic pathway? - CORRECT ANSWER-Allows the flow of
electrons to connect the corrosion cell
What is the galvanic series? - CORRECT ANSWER-A listing of metals in order of
reactivity (more or less noble) in seawater at 25 C
The general rules of galvanic corrosion are: - CORRECT ANSWER-The less noble (or
more reactive) metal when connected to a more noble (or less reactive metal) will
corrode preferentially
Name the five most important factors that affect the rate of corrosion. - CORRECT
ANSWER-Humidity, oxygen, chemical salts, pollutants, temperature
General corrosion is: - CORRECT ANSWER-Results in a relatively uniform loss of
material over the entire surface, Results in a general thinning of the affected surface,
Relatively easy to inspect, Does not casue catastrophic failures
Localized corrosion is: - CORRECT ANSWER-Typically pitting and crevice corrosion. It
is typically of the most concern as damage is concentrated and loss of integrity or
structural failure can result.
Define Corrosion - CORRECT ANSWER-The deterioration of a substance, usually a
metal from a reaction with its environment
What is passivation? - CORRECT ANSWER-A layer of oxides formed on the surface of
a metal that provides corrosion protection.
What is an example of passivation? - CORRECT ANSWER-Stainless Steel
What are the elements of a corrosion cell? - CORRECT ANSWER-Anode, Cathode,
Metallic Pathway, Electrolyte
Describe what happens at the anode. - CORRECT ANSWER-The metal dissolves into
the electrolyte
, List some of the common tools/methods used for corrosion control. - CORRECT
ANSWER-Design, Inhibitors, Material Selection, Cathodic Protection, Protective
Coatings, Splash Zone Systems, Alteration of the Environment
How does NACE define the inspector's role? - CORRECT ANSWER-The inspector's
role is that of a quality control technician responsible for observing and reporting
conformance or deviation from the project specification.
What is the inspector's responsibility when it comes to safety on the project? -
CORRECT ANSWER-Safety enforcement is not the responsibility of the inspector;
however, it is his/her responsibility to report any issues that may affect the project.
Name some tests that may need to be conducted during surface preparation and
coating operations. - CORRECT ANSWER-Temperature, Relative Humidity, Dew Point,
Anchor Profile, Surface Cleanliness
Name some of the documentation/reports that may be required to be maintained on a
coatings project. - CORRECT ANSWER-Daily/weekly summary, material usage reports,
manpower and equipment, non conformance, and conformance
What are the most important characteristics of a good report? - CORRECT ANSWER-
Objective, Accurate, and Detailed.
What is the inspector's primary responsibility and what should the inspector not do as it
pertains to the specification. - CORRECT ANSWER-The Inspector's primary
responsibility as the inspector is to "enforce" specification. The inspector is NOT to
make changes to the specification for any reason.
What type of information could you expect to find on a Product Data Sheet? -
CORRECT ANSWER-Surface preparation and application information such as
recommended level of surface cleanliness, recommended application methods and
equipment such as tip sizes. Also, environmental parameters for application such as
max and min temperatures, curing times, recoat windows.
What type of information could you expect to find on a Safety Data Sheet? - CORRECT
ANSWER-Health, safety and environmental. The PPE required. Physical
characteristics. Emergency responder information.
Explain the difference between Quality Assurance (QA) and Quality Control (QC). -
CORRECT ANSWER-Quality Assurance - Any systematic process of checking to see
whether a product or service being developed is meeting specs.
Quality Control - A procedure or set of procedures intended to ensure that a
manufactured product or performed service adheres to a defined set of quality criteria or
meets the requirements of the client or customer