NACE CIP Level 1 Study Guide Questions and Answers.

NACE CIP Level 1 Study Guide Questions and Answers. Define Corrosion - AnswerThe deterioration of a substance, usually a metal from a reaction with its environment What is Passivation? - AnswerA layer of oxides formed on the surface of a metal that provides corrosion protection. What is an example of passivation? - AnswerStainless Steel What are the elements of a corrosion cell? - AnswerAnode, Cathode, Metallic Pathway, Electrolyte Describe what happens at the anode. - AnswerThe metal dissolves into the electrolyte What is the function of the electrolyte? - AnswerAllows the passage of ions to connect the corrosion cell What is the function of the metallic pathway? - AnswerAllows the flow of electrons to connect the corrosion cell What is the galvanic series? - AnswerA listing of metals in order of reactivity (more or less noble) in seawater at 25 C The general rules of galvanic corrosion are: - AnswerThe more reactive metal --when connected to the less reactive (more noble) metal -- will corrode preferentially Name the five (5) most important factors that affect the *rate of corrosion.* - AnswerHumidity, oxygen, chemical salts, pollutants, temperature General corrosion is: - AnswerResults 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: - AnswerAt discrete/specific spots on the metal surface. Typically pitting and crevice corrosion. The most concerning as damage is concentrated and loss of integrity or structural failure can result. List some of the common tools/methods used for *corrosion control*. - AnswerDesign, Inhibitors, Material Selection, Cathodic Protection, Protective Coatings, Splash Zone Systems, Alteration of the Environment How does NACE define the Inspector's role? - AnswerThe 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? - AnswerSafety 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. - AnswerAmbient 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. - AnswerDaily/weekly summary, material usage reports, manpower and equipment, conformance, and Non-conformance What are the most important characteristics of a good report? - AnswerObjective, Accurate, and Detailed. What is the inspector's primary responsibility and what should the inspector not do as it pertains to the specification. - AnswerThe 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 [Material] Product Data Sheet (PDS)? - AnswerSurface 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? - AnswerHealth, safety and environmental. The PPE required. Physical characteristics. Emergency responder information.