AST STI SP0001 External Inspection Scott AFB, Illinois

5.1.  Basic Services.5.1.1.  Perform an External AST inspection to also include the visual inspection of the containment area.  The contractor shall visually inspect containment for ability to contain the entire contents of the tank in the event of catastrophic failure, assessing for cracks, settlement, and deterioration. Record dimensions of cracks and provide photographic evidence of each deficiency.5.1.2.  Provide DRAFT and FINAL inspection reports per the attached templates. The report(s) must include a record of NDE findings with drawings depicting plate layout and thickness measurement locations. Incorporate engineering analysis, suitability for service analysis pursuant to paragraph SUITABILITY FOR SERVICE, corrosion rate determinations, and remaining service life calculations. Provide separate report for each tank inspected. Specify the due date for the next inspection.5.2.  SUTABILITY FOR SERVICE:  Evaluate inspection data to determine suitability for continued use. Identify conditions which pose a risk to integrity. Determine a metal loss threshold for mandatory repairs. In the determination of mandatory repairs:a. Use a "first, do no harm" approach to classifying tank repairs.b. Use Desired Service Interval as the time to next inspection unless notified otherwise by the Contracting Officer.c. Use minimum remaining thickness (MRT) no less than 100 mils at the next inspection.d. Do not classify as mandatory repair of conditions which are noncompliant with current standards but are un-related to structural or hydraulic integrity (e.g., gouge, improper weld spacing, weld profile).e. Apply repair determination to individual indications. Do not average across an entire plate or