API 653 Tank Cleaning and Inspection Charleston AFB, South Carolina

Remove and transfer of 5,000 gallons of fuel product. Clean the tank and perform an internal 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. 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.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Concrete Reinforcing, Cast-in-Place Concrete.
Division 05 -	Metals, Structural Metal Framing, Metal Decking.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Facility Fuel Piping, Facility Fuel-Storage Tanks.
Division 31 -	Earthwork, Clearing and Grubbing, Grading.
Division 32 -	Exterior Improvements, Fences and Gates.
Division 33 -	Utilities, Storm Drainage Utilities.