NACE CIP 1 EXAM Practice Questions with Correct Answers Latest 2023 | 2024 (Graded)

NACE CIP 1 EXAM Practice Questions with Correct Answers Latest 2023 | 2024 (Graded) Anode the electrode at which oxidation occurs. electrons flow away from the the anode in the external circuit. corrosion usually occurs and metal ions enter the solution at the anode cathode the electrode at which reduction occurs. electrons flow towards the cathode in the external ciruit cathodic protection A technique to reduce the corrosion of a metal surface by making that surface the cathode of an electrochemical cell. corrosion the deterioration of a material, usually a metal, that results from a reaction with its environment. corrosion inhibitor A chemical substance or combination of substances that, when present in the environment, prevents or reduces corrosion. crevice corrosion localized corrosion of a metal surface at, or immediately adjacent to, an area that is shielded from the environment and full exposure due to the close proximity of the metal to another surface electrolyte A chemical substance that promotes conduction of an electrical current galvanic series List of metals and alloys arranged according to their corrosion potentials in a given environment (in sea water at 25 celcius) generalized corrosion Corrosion that is distributed more or less uniformly over the surface of a material localized corrosion Occurs at discrete sites and often in areas that are difficult to inspect mill scale The oxide layer formed during hot fabrication or heat treatment of metals. Passivation a layer of oxides formed on the surface of a metal that provides corrosion protection (ex stainless steel) a reduction of the anodic reaction rate of an electrode involved in corrosion, Pitting Corrosion Localized corrosion of a metal surface that is confined to a small area and takes the form of cavities called pits. Return Path (Metallic Pathway) Connects the anode and cathode, allowing passage of electrons, generated at the anode, to the cathode what are the elements of a corrosion cell 1. Anode 2. Cathode 3. Metallic pathway 4. Electrolyte what happens at anode oxidation. metal dissolves into 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 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 at least 5 factors that affect the rate of corrosion temp, humidity, chemical salts, oxygen, pollutants General Corrosion Uniform loss of material over an entire surface and general thinning of affected surface corrosion that is distributed more or less uniformly does not cause catastrophic failures Localized Corrosion Occurs at discrete sites and often in areas that are difficult to inspect. concentrated and can cause catastrophic failures what are some of the common tools/methods used for corrosion control inhibitors, design, cathodic protection, protective coatings, splash zone systems, altering the environment Coatings Specification Formal, structured document containing information on a project (scope, terms, schedule, inspection, etc.) Instrument Calibration History Reports Reports that normally contain information on how frequently each instrument is to be or has been calibrated. Materials Inventory Reports Reports that contain information on the inventory of jobsite materials, and are normally submitted periodically safety data sheets (SDS sheets) a form containing data of known substances in a particular product Quality insurance (QA) any systematic process that checks whether a manufactured product or service being developed is meeting specified requirements quality control (QC) Procedure intended to ensure that a manufactured product or performed service meets the requirements of the client or customer quality control technician Inspector's role, primarily responsible for observing and reporting the technical aspects of a coating project and its conformance or deviation from the project specifications standards a term applied to codes, specs, recommended practices, procedures, classifications, test methods, and guides that provide interchangability and compatability. enhance quality, safety, and economy. published by a standards development group of organization 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 inspectors responsibility when it comes to safety on a project? safety enforcement is NOT the role of the inspector. However, the inspector is responsible to report any issues that may affect the project Name some tests that may need to be conducted during surface preparation and coating operations. surface temp, 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 reports, weekly summary, materials usage reports, manpower and equipment, Non-conformance and conformance reports what the the most important characteristics of a good report accurate, detailed, objective what is the inspectors primary responsibility and what should he/she not do as it pertains to the specs inspectors role is to ENFORCE specs only. inspector should NOT make any changes to specs what type of information could you expect to find on a product data sheet surface prep and application info, such as recommended surface cleanliness, application methods, and equipment sizes. also environmental parameters like max and min application temps, curing times, recoat windows what type of information could you expect to find on sds sheets health, safety, environmental. necessary PPE. physical characteristics emergency responder info dew point The temperature at which condensation begins to form on a steel surface Infrared thermometer devices that measure temp, using blackbody radiation emitted from objects Magnetic Surface Contact Thermometer One of the most common instruments used to determine substrate temps. Psychrometric Chart a graph of physical properties of moist air at a constant pressure (often equated to elevation relative to sea level) Psychrometric Tables Booklet used to a determine the relative humidity and dew point temperature of air relative humidity The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature Repeatability The ability of the instrument to give the same readings under similar ambient and target conditions. sling psychrometer type of psychrometer most used in coating inspection. it is used to measure the ambient air temp to calculate relative humidity and dew point Wind Speed Monitor An instrument to help decide if conditions are appropriate for coating application projects. identify some of the defects that can be caused by incorrect application temps failure to cure too fast solvent evaporation poor film formation name some of the effects that wind may have on a coating project blowing abrasives, excessive drift or overspray, accelerating solvent evap, contribution to formation of dry spray what are some of the common errors when using and electronic hygrometmeter failure to acclimate the instrument to the environment with adequate time explain the process for the use of the sling psychrometer wet or make sure wick wet. sling for 40 sec. continue until 3 consecutive wet readings achieved additives Components of a coating, typically added in small amounts to perform a specific function adhesion process in which dissimilar molecules cling together due to attractive forces can be chemical, mechanical, polar, or all three barrier coatings A coating that (1) has a high resistance to permeation of liquids and/or gases, or (2) is applied over a previously coated surface to prevent damage to the underlying coating during subsequent handling. binder nonvolatile portion of the vehicle of a formulated coating material Inhibitive Pigment A pigment that passivates the metal surface by forming a thin, tightly adherent film or by reinforcing and plugging defects in the natural air-formed film. Inorganic Coatings Coatings whose binders are made from non-living things, most commonly based on either silicone or zinc Organic Coating coatings whose binders are made from living or once living things pigment fine, solid particles added during manufacturing of a coating, which are substantually insoluble in the vehicle, used to impart color, corrosion control, or decorative purposes sacrificial coatings Coatings that use a metal that is anodic to steel and corrodes preferentially solvents Added to coatings to liquefy the binder and allow for application in a productive manner. compostion of a liquid coating pigment and vehicle vehicle- made of resin/binder and solvent solvency power ability to dissolve the resin volatility governs evap rate chemical adhesive bonding most effective Polar adhesion (valence bonding) most common. resin acts as a weak magnet with north and south poles attracting opposite poles on substrate mechanical adhesion interlocking, contraction list 3 desirable properties of a coating - Chemical resistance - Water resistance - Ease of application - Adhesion to substrate - Cohesive strength - Flexibility and elongation - Impact resistance - abrasion resistance - Temperature resistance - Dielectric strength two broad classifications of a coating are Organic/Inorganic, Convertible/non-convertible, thermosetting/thermoplastic what are 2 primary components of a liquid applied coating vehicle(resin/binder and solvent) and pigment describe 3 methods by which a coating provides corrosion control barrier, inhibitive, sacrificial what are 3 different ways a coating can adhere to the surface chemical, mechanical, polar, or a combo of all 3 truly beneficial communication takes form of