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3.5.2.4.Soap the entire exterior of the tank.Watch for active air <br /> Lifting Lug Typical Service Fitting bubbles,which indicate a leak.Pay special attention to fitting and <br /> Typical Manway with Fittings l Monitor Fitting When Double manways.Lift the tank to check the bottom. Do riot roll the tank. <br /> / Bulkhead Is Used <br /> 3.5.2.5. Monitor the pressure for one hour. Do not release air <br /> End Tank rfljank End Tank pressure. <br /> 1111 <br /> 3.5.3.AIR TEST OF END TANK(S) <br /> Bulkhead Flat <br /> Seam for Rib 3.5.3.1. Install the test manifold in the open service fitting. <br /> Seam for Base Tank Seam for <br /> End Tank End Tank Connect the pressure source to the test manifold on the end <br /> tank(s). (See FIGURE 3-3 and FIGURE 3-8.) <br /> FIGURE 3-6 3.5.3.2.Pressurize the end tank(s)to 5 prig[3 psig for a 12-foot <br /> tank].Allow the pressure to stabilize by adding or removing air <br /> Air Test of Base Tank as necessary. <br /> 3.5.3.3.Close the air-supply valve on the test manifold. <br /> Disconnect the air-supply line. <br /> 3.5.4.EXTERNAL SOAP TEST <br /> 3.5.4.1.Soap the entire exterior of the tank.Watch for active air <br /> bubbles,which indicate a leak.Pay special attention to fitting and <br /> manways. Lift the tank to check the bottom. Do not roll the tank. <br /> FIGURE 3-7 <br /> 3.5.4.2.Monitor the pressure for one hour. <br /> Air Test of End Tank(s) 3.5.4.3.After the test is completed,release all tank air pressure <br /> and remove gauges. <br /> 3.6. TESTING A SINGLE-WALL MULTICOMPARTMENT <br /> TANK WITH DOUBLE BULKHEAD(S) <br /> ACAUTION <br /> Do not connect air supply di to the interstitial--space <br /> FIGURE 3-8 monitor fitting.Pressurizing the ndary tank(intersbfial <br /> space)by itself may damage the primary tank or cause tank <br /> failure. <br /> Air-Test Monitoring of Double Bulkhead(s) <br /> 3.6.1. GENERAL <br /> 3.6.1.1. Remove all temporary service fitting plugs,redope and <br /> reinstall all fitting plugs except one in each compartment <br /> (needed for test manifolds). Install permanent plugs in all <br /> unused openings. (See FIGURE 3-6 and FIGURE 3-7.) <br /> 3.6.2.AIR TEST OF BASE TANK <br /> 3.6.2.1.Install the test manifold in the open service fitting. <br /> FIGURE 3-9 Connect the pressure source to the test manifold on the base <br /> tank. (See FIGURE 3-3 and FIGURE 3-7.) <br /> 3.5.2.AIR TEST OF BASE TANK <br /> 3.5.2.1. Install the test manifold in the open service fitting. 3.6.2.2.Pressurize the base tank to 5 psig[3 psig for a 12-foot <br /> Connect the pressure source to the test manifold on the base tank].Allow the pressure to stabilize by adding or removing air <br /> tank. (See FIGURE 3-3 and FIGURE 3-7.) as necessary. <br /> 3.5.2.2.Pressurize the base tank to 5 psig[3 psig for a 12-foot 3.6.2.3.Close the air-supply valve on the test manifold in each <br /> tank].Allow the pressure to stabilize by adding or removing air compartment.Disconnect the air-supply line. <br /> as necessary. 3.6.2.4.Soap the entire exterior of the tank.Watch for active air <br /> 3.5.2.3.Close the air-supply valve on the test manifold in each bubbles,which indicate a leak. <br /> compartment.Disconnect the air-supply line. 3.6.2.5. Monitor the pressure for one hour. Do not release air <br /> pressure. <br /> 6 <br />