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Whenever the tanks are stored at the site,chock them in place to 0 prevent rolling. (See Figure 1-2).Tie them down if high winds are When the tank is under pressure,the manways and/or fittings expected. may dislodge or the tank may rupture and result in death, After delivery and before pre-installation testing,visually inspect severe personal injury,or property damage.Before beginning the entire exterior surface of the tank for signs of damage(holes, the test,notify all people on the test site to remain in a safe cracks or deep scrapes). location.ALWAYS ATTEND THE TANK DURING THE TEST. Verify that all of the safe-delivery provisions of the Xerxes Avoid extended exposure to the manways,fittings and ends of "Damage Free Delivery"program have been followed.Sign the the tank during the test. driver's release form. Q WARNING: The maximum test pressure is 5 PSIG(3 PSIG when testing a 12 foot tank).The pressure gauge must be positioned so that the pressure readings can be clearly read at all times. I II MAX III II I II s PSIG IIII FIGURE 1-2 IIIII- IlaIII ILL III .. I I SI - All Xerxes tanks are tested prior to shipment but it is required that all tanks be tested prior to installation in order to verify the absence of shipping and handling damage. In the unlikely event of a leak,it is most likely to develop at a manway or a fitting.After installation and before backfilling to grade,the test must be 1.Open one service fitting.Remove the remaining fittings, repeated to verify that no damage has occurred during redope,and reinstall fitting plugs. installation. Refer to the appropriate section below for the instructions for 2.Install the test manifold in the open service fitting.Connect the testing a single wall tank,a double wall tank with a dry interstitial pressure source to the test manifold.(See Figure 2-2). space or a double wall tank with a liquid-filled interstitial space. 3.Pressurize the tank to 5 PSIG(3 PSIG when testing a 12 foot If damage is detected, DO NOT ATTEMPT REPAIRS.Contact the tank).Add or remove air as necessary and allow the pressure UST Coordinator at the Xerxes plant nearest you or the Technical to stabilize. Service Department at Xerxes corporate office.Telephone 4.Close the valve on the test manifold.Disconnect the air supply numbers are found on the last page of this manual. line. Construct a test manifold as shown in Figure 2-1.The air supply 5.Monitor the pressure for one hour.Soap the entire exterior of gauge must have a maximum full-scale reading of 15 PSIG with the tank and watch for active air bubbles which indicate a leak. 1/4 or 1/10 Ib.increments. 6.When the test is complete,carefully release the air pressure WARNING: from the tank by opening the air supply valve.The air supply line should already have been disconnected. Remove the test The pressure relief device or regulated air source must be manifold. rated at a maximum of 6 PSIG(4 PSIG for 12 foot tanks)to reduce the risk of overpressurizing the tank The tester is responsible for verifying that all of the test equipment is in good working condition and properly configured. FROM COMPRESSOR PRESSURE RELIEF DEVICE AIR SUPPLY VALVE FROM COMPRESSOR AIR SUPPLY GAUGE SERVICE FITTING AIR SUPPLY VALVE PRESSURE RELIEF AIR SUPPLY GAUGE DEVICE SERVICE FITTING TEST MANIFOLD FIGURE 2-2 FIGURE -1