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n !i NATIONAL National Corrosion CORROSION www.notional-corrosion.com • Pipe support assessment • Corrosion potentials of supports and pipeline potentials • Upstream and downstream soil -to -air interface descriptions • Dry film thickness (Coating) at locations 12, 3, 6, and 9 o clock • UT (Ultrasonic) measurements at locations 12, 3, 6, and 9 o clock • Insulator potentials and AC potential Water depth Photographs with info • Sub -meter GPS coordinates • Corrosion Severity Code (Define and classify priority actions) o Perform atmospheric assessments at key locations o Conduct current requirement testing to verify current needed to bring pipe -to - soil potentials up to NACE criteria. o Create a scope of work for improvements or repairs required to improve corrosion assessment. o Verify the existence and location of stray DC currents affecting the pipelines at locations nearforeign impressed current cathodic protection systems. o Test and verify dielectric isolation from foreign structures. o All data to be ArcGIS compatible o Create coating specifications and repair procedures Task 3 — Integrate testing data into ArcGIS system Field testing data will be recorded in a format compatible with ArcGIS. If ArcGIS implementation is approved, then all data will be uploaded to a server. All activity will actively update during repairs or modifications and the condition of facilities can be monitored remotely. ArcGIS data will be recorded in a method that will aid estimation of coating and mechanical repairs. • All locations for repair will be prioritized and backed up with data Task 4 —Corrosion Report (Deliverable) After all field testing, inspection, and analysis is complete, a drafted report will be prepared including the following: • Description of testing procedures and tabulation of data • Summary of test points showing GIS Coordinates along with identification • Site photos • Evaluation and assessment of active corrosion, status, and operational condition. • Conclusions on as -found conditions • Calculation of remaining life expectancy • Prioritized recommendations of repairs or replacements. • System operation and maintenance procedures • Corrosion control plan to address immediate and long-term requirements • Prepare a list of other cathodic protection systems owned by others that may cause interference or require a coordination of efforts.