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The ConVault System <br /> ConVault is an above ground fuel and oil storage system manufactured for the purpose of above ground storage.The <br /> purpose of this testing procedure document is to aid ConVault owners and engineers in complying with the requirements <br /> of the Spill Prevention Control and Containment regulations for integrity testing or inspection as found at 40 CER 112.8(c)(6) <br /> In effect as of January 14,2010. - <br /> The ConVault system includes: <br /> 1.Primary containment:Inner shop fabricated steel tanks built in accordance with A 142 Standard.The tank is pressure <br /> tested for 24 to 48 hours after fabrication process, again pressure tested during the precasting process, and also prior to <br /> shipment of the tank. <br /> 2.Secondary containment: Consists of a high density polyethylene (HDPE) liner.This secondary containment is vacuum <br /> tested prior to shipment of the tank. <br /> 3.Encasement inner steel tank and the HDPE liner are encased on all sides in 6°thick reinforced concrete.The entire system <br /> is elevated upon 4"to 6'high Integral concrete legs. <br /> The ConVault above ground fuelstorage system is manufacturedand testedin accordance with the OL2085 Standard <br /> t <br /> r <br /> } 4 <br /> F <br /> I. Fuel Dispenser T Support Legs <br /> a 2. Level Indicator 8,Internal Bracing <br /> 3.Steel Primary Tank 9.Atmospheric Vent <br /> 4. Polystyrene Layer 10,Leak DetectorTuhe <br /> 5. HDPE Liner 11.Overfill Containment <br /> 6. Reinforced Concrete 12. Emergency Vent <br /> ConVault is thus a three layered containment system;Primary steel tank, secondary HDPE liner and exterior concrete layer <br /> acting as a dam or dike.The integrityofeach layerwill be addressed in thefollowing steps. <br />