POL Tank Inspection (PET) Peterson AFB

Remove and transfer of 5,000 gallons of fuel product.Clean the tank and perform an AST API internal 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.Perform a thorough storage tank inspection in accordance with API Std 653, API RP 575, and Project Inspection Management Plan (pmp). Scan 100 percent of the tank bottom, as interior appurtenances allow, for indications such as metal loss, pits, cracks, gouges, and general corrosion. Distinguish between product and backside indications. Measure metal thickness with an ultrasonic method. Procedures must be compliant with ASME BPVC SEC V. Record measurements, exclusive of coating, for all tank bottom plates. Provide UT thickness measurement on

no less than five locations per plate and at indications from the screening technologies determined to be relevant. Mark relevant indications on tank surfaces in a neat and professional manner adjacent to the indication. Collect data to be used in the assessment of corrosion growth, structural integrity, brittle fracture, and hydraulic integrity. Complete the API Std 653 checklist and provide them with the DRAFT and FINAL reports. Utilize UFC 3-460-01 Table 8-1 and indicate appurtenances that are not present.Hydrostatically test the containment inlet, basin, line, valve.  Visually assess the liner integrity and impermeability where applicable. Each containment drain inlet, drain line and containment drain valve shall be hydrostatically tested to assure the drainage system is liquid tight. The Contractor shall perform a hydrostatic test to ensure the drainpipe and release valve do not leak. The Contractor shall perform a hydrostatic test to ensure the integrity of the inlet sump.  Drain Line and Release Valve.  The Contractor shall perform a hydrostatic test to ensure the drainpipe and release valve do not leak.  Test in accordance with applicable requirements of AWWA C600 for hydrostatic testing.  Ensure the release valve is closed and pressurize the end of the pipe within the containment basin sump.  Test for leakage by filling the pipe with water and pressurizing to 10 psi using a suitable pump connected to the pipeline. The test pressure shall not vary by more than ±1 psi for the duration of the test.  Hold this pressure for not less than 2 hours.  If the system does not hold pressure, check the outfall point to see if water is bypassing the valve.  Test pressure shall be maintained during the test by adding makeup water through the pressure test pump into the pipeline.  Accurately note the amount of makeup water required to maintain pressure during the test.  Containment Drain Inlet.  The Contractor shall perform a hydrostatic test to ensure the integrity of the inlet sump.  Test for leakage by filling the inlet with water to a level at least 1-2 inches above the top of the inlet structure.  The inlet shall hold this water for not less than 2 hours with no measurable change in the water level.Provide legible tank stencil or label on tank.  Upon completion of the Out-of-Service inspection the contractor shall provide a legible tank stencil or decal, consisting of black letters at least 1” in height, stating the date cleaned and inspected, the contractor’s name and the name of the contractor’s personnel supervising the work. Remove any existing stencils displaying previous inspection information. New information shall be provided in the following format: Provide Teleconference out briefing prior to closing up the tank.  The Contractor shall be responsible to establish a report of findings and coordinate a teleconference after the inspection is complete and at least 24 hours prior to placing tank back in service. This teleconference will review deficiencies found during the inspection with the Government making the final decision on whether or not to place this tank back into service. The Contractor can use Attachment H- API OUT-OF-SERVICE TELECON BRIEFING TEMPLATE or their own format however this document shall include the next recommended inspection intervals for both In-Service and Out-of-Service Inspection, and State regulated inspection intervals, if applicable. Also when listing the findings they shall be categorized as either “Mandatory”, or “Recommended”. 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. Include the API Std 653 inspector of record certificate number and signature.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 course.