Volume 2: Verifying the Quality of Coating Application is the second eBook in the Three Volume eBook series Inspection Instruments for the Pipeline Coatings Industry
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This self-study course is in eBook format. After reading this eBook, participants should be able to successfully:
- List the prevailing ambient conditions that are most commonly assessed prior to mixing and application of coatings.
- Describe the consequences of applying coatings outside of acceptable conditions.
- Explain the relationship between the dew point temperature and surface temperature.
- Identify the minimum delta between the surface temperature and dew point temperature.
- Describe the frequency and location in which ambient conditions are typically measured.
- Describe the proper use of a whirling (sling) psychrometer.
- Describe the procedures used to look-up relative humidity & dew point temperature using psychrometric charts.
- Explain the importance of acclimation of digital (electronic) psychrometers.
- Describe a common procedure for verifying the accuracy of thermometers.
- Identify the frequency of calibration recommended by most manufacturers of digital psychrometers.
- List two characteristics of a mixed coating that are based on the temperature of the material.
- List three type of instruments that can be used to measure paint temperature
- Describe the effect on the volume solids content of a coating when it is thinned.
- Explain the value of measuring the wet film thickness during application of a coating.
- List three values that are used to calculate the target wet film thickness.
- Calculate the target wet film thickness of an unthinned coating.
- Calculate the target wet film thickness of a thinned coating.
- Determine the “practical” volume solids content of a coating using a wet-to-dry ratio
- Describe other benefits of determining the “practical” volume solids content of a coating using a wet-to-dry ratio method.
- Describe the proper use of a wet film thickness gage
- Explain the benefits of a 4-in-1 wet film thickness gage versus a traditional wet film thickness gage.
- Describe the primary difference between the ASTM standard and the SSPC standard for coating thickness measurement.
- List two types of dry film thickness gages.
- Explain the proper use of a magnetic pull-off dry film thickness gage.
- Differentiate between calibration, verification of accuracy, and adjustment.
- Identify the frequency of calibration recommended by most manufacturers of dry film thickness gages.
- Describe the recommended frequency of accuracy verification of dry film thickness gages.
- Explain the difference between a single point and a two-point verification procedure.
- Explain how to calculate the combined tolerance of a gage and traceable coated standards when determining the accuracy of a coating thickness gage prior to use.
- Explain the procedure for determining the effect of the base metal on coating thickness measurements.
- Differentiate between base metal reading and surface profile.
- Describe the advantages of using electronic coating thickness gages versus magnetic pull-off coating thickness gages.
- Identify the type of standard used to verify gage accuracy.
- Identify two types of shims that can be used for gage adjustment procedures.
- Describe the procedures for measuring coating thickness along edges.
- Explain the difference between a gage reading, spot measurement and area measurement.
- Determine the minimum number of gage readings to obtain to generate a spot measurement.
- Determine the number of spot measurements that culminate in an area measurement.
- Calculate the number of area measurements required based on the total area coated during a work shift.
- Calculate he number of area measurements required for a cart or rack of coated pipe.
- Describe how Frequency Factors (FF) affect the number of spot measurements to obtain on a cart or rack of coated pipe.
- Describe how pipe spool diameter affects the number of circumferential spot measurements.