CoatingsPro Magazine

MAY 2017

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Page 29 of 84

COATINGSPRO MAY 2017 29 requirements. Electronic instrumen- tation may result in the revision of some industry norms, such as the frequency of measurements. Currently, the industry has a standard of five-spot measurements per 1,000 square feet (92.9 m²) per the Society for Protective Coatings (SSPC) Paint Application (PA) No. 2: Procedure for Determining Conformance to Dr y Coating ickness Requirements. With the capability to record and analyze a large number of data points quickly via electronic instruments, an amendment to that standard might be necessary to capture the additional measurements . Even the traditional method of inspecting film thicknesses with a minimum and maximum range may change. Statistical analysis of appli- cations may someday be included in inspection acceptance criteria. For example, software programs show the standard deviation (σ) of coating thicknesses found via the onsite readings, and these help to demon- strate the distribution or uniformity of film thickness over the surface. In the future, specifications may require a maximum standard deviation of thick- ness due to the ability to measure these with the inspection tools, taking into account that the standard deviation for an applied film is affected by both painter's application skills and the complexity of the part being painted. App-solute Access In addition to the electronic instru- mentation itself, you should also take the software apps associated with them into consideration. e apps from the instrument vendors are best suited for anyone working on multiple projects in the field, such as consultants and field inspectors. W here inspection work vacillates from project to project and customer specifications require a variety of inspection tests to be performed, flexibility in report forms is necessary. And not all instruments/reports are created equal. ere is flexibility in these instrument reports, since non-routine data can be inserted into the report. Typically, there is no cost to use the instrument vendor's software; the only cost is the purchase price of the instrument. On the other hand, a commercial app may be the best option when quality control is required to monitor and document routine coatings data using dedicated, trained personnel. ose apps offer preformatted inspection forms accessed via an iPad or similar device. is option uses a cloud-based standard job report form with drop down fields for entering data. In addition to the efficiency of writing inspection reports, using an app on an iPad with a custom- ized report form serves as a checklist. e inspector is much more likely to provide a fully completed inspection on site if he or she has fields to fill out on the app. e costs may include a monthly user fee, the iPad, and the inspection instruments. Use of the iPad and the electronic equipment requires a trained user who is comfortable with data entry and who will protect instruments from damage in a painting environment where abrasive dust and paint overspray may be present. Going paperless by using electronic devices may not be suited for everyone or every coating situation. When performing an inspection alongside a paint crew to gather data, sometimes the traditional one-page, hand-written inspection report may be the most practical option. In the Field On a recent field coating project, a NACE-certified inspector was contracted to monitor work performed on equipment in a wastewater Inspector's Corner Wr i te in Re ad e r In q u ir y #34

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