Nace cip level 1 study guide questions and answers latest 2023
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Nace cip level 1
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Nace Cip Level 1
Nace cip level 1 study guide questions and answers latest 2023
Define Corrosion
The deterioration of a substance, usually a metal from a reaction with its environment
What is passivation?
A layer of oxides formed on the surface of a metal that provides corrosion protection.
What is an exampl...
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Nace cip level 1 study guide questions and answers latest
2023
Define Corrosion
The deterioration of a substance, usually a metal from a reaction with its environment
What is passivation?
A layer of oxides formed on the surface of a metal that provides corrosion protection.
What is an example of passivation?
Stainless Steel
What are the elements of a corrosion cell?
Anode, Cathode, Metallic Pathway, Electrolyte
Describe what happens at the anode.
The metal dissolves into the electrolyte
What is the function of the electrolyte?
Allows the passage of ions to connect the corrosion cell
What is the function of the metallic pathway?
Allows the flow of electrons to connect the corrosion cell
What is the galvanic series?
A listing of metals in order of reactivity (more or less noble) in seawater at 25 C
The general rules of galvanic corrosion are:
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.
Humidity, oxygen, chemical salts, pollutants, temperature
General corrosion is:
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:
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.
List some of the common tools/methods used for corrosion control.
Design, Inhibitors, Material Selection, Cathodic Protection, Protective Coatings, Splash
Zone Systems, Alteration of the Environment
How does NACE define the inspector's role?
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?
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.
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.
, Daily/weekly summary, material usage reports, manpower and equipment, non
conformance, and conformance
What are the most important characteristics of a good report?
Objective, Accurate, and Detailed.
What is the inspector's primary responsibility and what should the inspector not
do as it pertains to the specification.
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?
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?
Health, safety and environmental. The PPE required. Physical characteristics.
Emergency responder information.
Explain the difference between Quality Assurance (QA) and Quality Control (QC).
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
Identify some of the defects that can be caused by incorrect application
temperatures.
Failure to cure, too rapid solvent evaporation, poor film formation
Describe relative humidity.
The amount of moisture in the air compared to saturation level
What is the dew point temperature?
The temperature at which moisture will begin to form on a steel surface.
Name some of the effects wind may have on a coatings project.
blowing abrasives, causing excessive drift or overspray, accelerating solvent
evaporation, contributing to the formation of dry spray
What are some of the common errors when using an electronic hygrometer?
Failure to acclimate the instrument to the environment with adequate time.
Explain the process for use of the sling psychrometer.
Make sure the wick is wet and clean, continue to "sling" until 3 consecutive readings are
achieved
List three desirable properties of a coating?
Chemical Resistance, water resistance, ease of application, cohesive strength, impact
resistance, dielectric strength
Two broad classifications of a coating are:
Organic/Inorganic, Convertible/non-convertible, thermosetting/thermoplastic
What are the two primary components of a liquid applied coating?
Pigment, Vehicle (Resin or Binder)
What are the three methods by which a coating provides corrosion control?
barrier, inhibitive, sacrificial
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