How is the process of steel corrosion ALWAYS described? - ANSWER-electrochemical Based on the galvanic series presented in the NACE CIP Level 1 Manual, which three can be used effectively as galvan... ic anodes for carbon steel? - ANSWER-zinc, aluminum, magnesium A decrease in temperature will generally cause the corrosion rate to _____ - ANSWER-decrease The electrolyte is a medium which carries the following type of current? - ANSWER-Ionic Corrosion occurring uniformly across a surface is called _____ - ANSWER-general corrosion When a conflict occurs on a coatings project, as the inspector, the preferred first course of action is to _____ - ANSWER-actively listen and endeavor to understand the positions of others A proper coating specification should contain information regarding ____, ____, and ____ - ANSWER-surface preparation standards, safety, and locations to be used Is it ever okay to accept a gift from a contractor? - ANSWER-NO What should you do if you find discrepancies between the specification and the coating manufacturer's technical data sheet? - ANSWER-seek written clarification from the owner's representative What are the general components of inspection reports? - ANSWER-- results of inspection tests - location(s) of work - details of preparation and application Inspection reports typically provide sufficient detail permitting the owner to evaluate ___ ___ ___ ___ - ANSWER-- contractor's performance - inspector's performance - job progress - work interruptions As an inspector headed to the job site for the first time, where would you always find instruction regarding appropriate types of PPE? - ANSWER-Safety Data Sheet (SDS), previously called MSDS Materials inventory report should contain which of the following? - ANSWER-- quantity of each component of each material onsite - material batch numbers - date of materials arrival at job site and storage information The primary function of the coating inspector is _____ - ANSWER-specification compliance High humidity in the air during coating application can cause _____ - ANSWER-solvent entrapment The temperature at which moisture condenses on a surface is called _____ - ANSWER-dew point Where should the steel surface temperature reading be taken? - ANSWER-at the actual work location What type of water should be added to a sling psychrometer? - ANSWER-distilled Which type of coating is manufactured with the specific components added to slow down the activity of the electrochemical cell? - ANSWER-inhibitive Which coating component forms a stable film that retains its characteristic properties? - ANSWER-binder/resin A barrier coating interrupts the ______ of the electrochemical cell. - ANSWER-electrolyte List the three mechanisms by which coatings adhere to a substrate - ANSWER-1. Polar 2. Chemical 3. Mechanical What is the rule for coating work when it comes to Dew Point and Steel Temperature? - ANSWER-Steel Temperature must be 5 degrees less than the Dew Point What characteristics of solvents influence coatings? - ANSWER-- solvency power - volatility The contractor's sling psychrometer gives a different reading than your electric hygrometer. What would you do first as an inspector? - ANSWER-verify calibration of both instruments Which of the following coating are co-reacting? - ANSWER-- polyurethane - epoxy Fusion Bond Epoxy (FBE) is most commonly used to coat ____ - ANSWER-pipe Which coatings may require external moisture to cure? - ANSWER-- single component polyurethane - solvent borne inorganic zinc Amine blush is likely to occur with which type of coating? - ANSWER-epoxy Which type of coating cures the fastest? - ANSWER-Polyurea When an inorganic Zinc Rich primer is applied too heavily a common result is ______ - ANSWER-mud cracking Commonly used primers for steel structures are ? - ANSWER-- epoxy - inorganic zinc - organic zinc Coatings that cure by polymerization are _____ - ANSWER-convertible Water-borne latex coatings cure by a process known as _____ - ANSWER-coalescence On a blast-cleaned surface, ultraviolet ligt can reveal _____ - ANSWER-oil You are an inspector on a project with a sprayed polyurethane coating. The probable safety concern is _______ - ANSWER-isocyanates The requirements of a coatings project are defined by which document? - ANSWER-coating specification A prejob conference is useful for discussions on which of the following? - ANSWER-- safety - cleaning - application - schedule You are the inspector on a project where the specified level of cleanliness is "near white". Which standard would you follow? - ANSWER-NACE No. 2 / SSPC-SP 10 The power tool standard for cleaning to bare metal with minimum profile of 1 Mil (25.4 microns) is ______ - ANSWER-SSPC-SP 11 What is referenced by ISO 8503? - ANSWER-Grit and Shot profile comparators List the reasons that mill scale is typically removed: - ANSWER-- to avoid future delamination - to improve coating adhesion - to eliminate a source of galvanic corrosion Which standard defines a "commercially" blast cleaned surface? - ANSWER-NACE No. 3 / SSPC-SP 6 ISO SA 2-1/2 is a blast cleaning surface that is similar to which joint standard? - ANSWER-NACE No. 2 / SP 10 Approximately 75% of premature coating features are caused by _____ - ANSWER-inadequate or improper surface preparation NACE SP0178 comparator addresses ___ ___ ___ ___ - ANSWER-- butt welds - lap welds - radius edges - finishing grades of weld You are on a project where Testex Tape is specified to determine surface profile by ASTM D4417 Method C. What is likely to cause reading errors? - ANSWER-- dust on the surface - using incorrect grade of tape Which power tool cleaning standard describes a surface free of all oil, grease, dirt, rust, coatings, mill scale, oxide and other foreign matter yet permits random staining while requiring a minimum profile of 25 microns (1 mil)? - ANSWER-SP 15 When applied to concrete, alkyd coatings will fail prematurely due to _____ - ANSWER-saponification Which SSPC Vis 1 rust grade defines a surface covered with both mill scale and rust? - ANSWER-Grade B You are on a job and observe the coating is being applied in an unacceptable manner. As an inspector you should ____ and ____ - ANSWER-- report to the contractor's supervisor - report to the owner's representative Which standard gives guidelines for how many DFT measurements should be taken in a given area? - ANSWER-SP 2 A pre-job conference should be held - ANSWER-after bids have been submitted and contracts signed What are the goals of a pre-job conference? - ANSWER-- review and discuss the scope of work - discuss lines of communication between parties - discuss and clarify inspector's responsibilities and authority What is one of the inspector's roles at a pre-job conference? - ANSWER-clarify reporting requirements According to ASTM D 4417 Method B-2014, when taking measurements using a profile gauge , at each location make ______ - ANSWER-ten (10) readings per location, recording the maximum value. Determine mean for all maximum values as the reported profile Daily reports or weekly reports should be written in ___ - ANSWER-pen What can inspection records be used for? - ANSWER-- help in resolving legal or arbitration disputes - assist owners in the evaluation of applicator performance - assist owners in the evaluation of inspector performance - determine total cost of the project The inspector's log book is a personal chronicle of what happened on a daily basis and is usually ____ - ANSWER-retained by the inspector Generally speaking, on a typical coating project overall safety is the responsibility of _____ - ANSWER-a certified safety professional When applying coatings, generally high relative humidity _____ - ANSWER-slows solvent evaporation A typical daily report should include ___ ___ ___ - ANSWER-- description of manpower and equipment used - explanation of work stoppages - list of environmental conditions What is an advantage of airless spray compared to conventional air spray? - ANSWER-faster production rate What inspection challenges do you expect specific to working inside containment? - ANSWER-- illumination - control of temperature and humidity Improper atomization of the coating may cause ___ ___ ___ - ANSWER-- uneven DFT - dry spray - overspray High viscosity due to low temperature should be corrected by ___ ___ - ANSWER-- adding extra thinner - heating the coating SSPC Technology Guide No.12 states "Surface preparation and coating applications must have a minimum of how man candles / lumens? - ANSWER-50 foot candles (538 lumens) One major advantage of conventional spray is ___ - ANSWER-applicator control When using WFT comb/gauge, the measurment should be taken when? - ANSWER-immediately after the coating is applied When reporting the wet film thickness from a wet film thickness comb/gauge you report which tooth? - ANSWER-the last tooth that has coating on it Solventbourne inorganic zinc primer is being applied with airless spray to a complex bridge with difficult access for application. The contractor is having difficulty with high DFT resulting in mudcracking. What application method might be a good alternative? - ANSWER-conventional spray [Show More]
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