NACE CIP level I chapter 5 environmental testing questions and answers 100% solved

Environmental Conditions - ANSWER Environmental, or ambient, conditions can greatly affect all phases of a coating operation. Surface Temperatures - ANSWER * Surface temperature is often different from air temperature * Application at incorrect temperatures can cause defects * Minimum and maximum application temperatures should be recognized * Substrate should be at least 3 degrees C (5 degrees F) above the determined dew point Relative Humidity - ANSWER * Measure of the amount of moisture in the air compared to saturation level * May affect the coating if too high or too low * Too high may cause solvent entrapment * Relative Humidity changes relative to a parcel of air as temperature increases Dew Point - ANSWER The temperature at which moisture will begin to form on a surface. Wind speed - ANSWER ______ can adversely affect a coating job in several ways. * Blowing abrasives * Causing excessive overspray * Accelerating solvent evaporation * Contributing to the formation of dry spray Surface Temperature Instruments - ANSWER * Digital Infrared Thermometers * Mechanical Surface Contact Thermometers * Electronic Surface Contact Thermometers Digital Infrared Thermometer - ANSWER ______ are non-contact thermometers that are used to measure temperature from a distance.