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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 CFR 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 UL 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 64 high integral concrete legs. <br /> The Con Voult above ground fuel storage system is manufactured and tested in accordance with the UL 2085 Standard. <br /> 1 <br /> io <br /> y <br /> i.. 7 <br /> l _ _ <br /> z _r - 1. Fuel Dispenser 7.Support Legs <br /> 2. Level Indicator. 8.Internal Bracing <br /> ;y 3. Steel PrimaryTank 9.Atmospheric Vent <br /> 4. Polystyrene Layer 10. Leak Detector Tube <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 integrity of each layer will be addressed in the following steps. <br />