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2.1.3.5.Do not roll the tank to move it. 3.1.6.When checking the tank for leaks during an air/soap test, rotate the tank to check the bottom,unless it is a tank filled with 2.1.3.6.When handling a tank with a bottom sump or fitting,always monitoring fluid. take extra care so that the bottom sump or fitting is not damaged by contact with any other object,such as the truck bed or the ground. CAUTION Never rotate a tank filled with monitoring fluid.See 2.1.4.Whenever a tank is temporarily placed aboveground at SECTION 3.4.and SECTION 3.8.for instructions regarding the site,chock it in place to prevent rolling. (See FIGURE 2-3.) these tanks. Tie the tank down if high winds are expected. 3.1.7.Before rotating the tank during an air/soap test,place protective material on the area on which the tank will be rotated. Tie Downs Make sure the area is flat and is free of large or sharp objects, such as rocks,which may damage the tank. Sandbags Tres Tank 3.1.8.Rotate the tank slowly and carefully to avoid developing too much momentum.Momentum can grow because fittings on top of the tank make it top heavy. Make sure the tank's fittings and manways never touch the ground.Do not rotate the tank more than 120°from the initial starting point. FIGURE 2-3 1A WARNING 3. PREINSTALLATION TESTING Always secure the tank before moving or lifting it.This is commonly done by connecting a crane or backhoe to the 3.1.GENERAL lifting lugs.Failure to do so could result in death or serious 3.1.1.Xerxes tanks are tested prior to shipment,but the tank injury. must be retested at the site prior to installation—even if shipped with the optional vacuum in the interstitial space or wet A WARNING interstitial space—in order to verify the absence of shipping and While moving or lifting the tank,do not position any part of handling damage. your body underneath the tank. This could result in death 3.1.2.The tester is responsible for verifying that all of the test or serious injury. equipment is in good working condition,and is properly configured and calibrated. A WARNING 3.1.3.Construct a test manifold with two air-supply gauges as Do not lift or hoist a tank under pressure. This could resultin death or serious injury. shown in FIGURE 3-1.Each air-supply gauge must have a maximum full-scale reading of 15 psig with 1/4-Ib.or 1/10-Ib. 3.1.9.Refer to the appropriate section below for instructions for increments,and a pressure-relief device set at 6 psig[4 psig for the following situations: 12-foot-diameter tanks]. 3.1.9.1.For testing a single-wall tank,see SECTION 3.2. Gauge JK—_Ai,-Supply Valvely g dry 3.1.9.2.For testing a double-wall tank with a d interstitial Air-Supp Gauge space,see SECTION 3.3. Pressure-Relief 3.1.9.3.For testing a double-wall tank with a wet interstitial Device space,see SECTION 3.4. FIGURE 3-1 3.1.9.4.For testing a single-wall multicompartment tank with a 3.1.4. In air tests,temperature change could be a factor in single-wall bulkhead,see SECTION 3.5. changes in gauge readings. 3.1.9.5.For testing a single-wall multicompartment tank with Note: Multiple test manifolds are required to test double-wall bulkhead(s),see SECTION 3.6. multicompartment tanks. 3.1.9.6.For testing a double-wall multicompartment tank with a 3.1.5. It is the installer's responsibility to select a thread sealant dry interstitial space,see SECTION 3.7. that is compatible with the product being stored.Some sealants 3.1.9.7.For testing a double-wall multicompartment tank with a cannot be used with some products.Remove,clean and redope wet interstitial space,see SECTION 3.8. all factory-furnished temporary plugs with appropriate thread sealant. Install permanent plugs in all openings where piping will 3.1.10. If damage is detected,do not attempt repairs.Contact not be installed.Make sure all manway bolts are tightened,and the UST coordinator at the Xerxes plant nearest you.Telephone fitting plugs are properly doped and sealed. and fax numbers are found on the back cover of this manual. 4