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Whenever the tanks are stored at the site,chock them in place to WARNING:When the tank is under pressure,the manways and/or prevent rolling.(See Figure 1-2).Tie them down if high winds are fittings may dislodge or the tank may rupture and result in death, expected. severe personal injury,or property damage.Before beginning the j After delivery and before pre-installation testing,visually inspect test notify all people on the test site to remain in a safe location. the entire exterior surface of the tank for signs of damage(holes, ALWAYS ATTENDTHETANK DURING THE TEST.Avoid extended cracks or deep scrapes). exposure to the manways,fittings and ends of the tank during the test. Verify that all of the safe-delivery provisions of the Xerxes"Damage CAUTION:The maximum test pressure is 5 PSIG(3 PSIG when Free Delivery'program have been followed.Sign the drivers testing a twelve-foot tank). release form. HE 111111 RE IIII IIIIIMAXIIII IIII I 5 PSIG II II- 11 I = 11 FIGURE 1.2 111111 � � 8 1 111111 =111112 1 2. MEINSTALWJONTIESTINO*', NI 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 repeated to verify 1. Open one service fitting.Check to see that all remaining service that no damage has occurred during installation.Refer to the 1. s are property doped,plugged and tightened. appropriate section below for the instructions for testing a single 9 p p y p p gg wall tank,a double wall tank with a dry interstitial space or a double 2. Install the test manifold in the open service fitting.Connect the wall tank with a liquid-filled interstitial space. pressure source to the test manifold.(See Figure 2-2). If damage is detected,DO NOT ATTEMPT REPAIRS.Contact the 3. Pressurize the tank to 5 PSIG(3 PSIG when testing a 12-toot UST Coordinator at the Xerxes plant nearest you or the Technical tank).Add or remove air as necessary and allow the pressure Service Department at Xerxes'corporate office.Telephone numbers to stabilize. are found on the last page of this manual. 4. Close the valve on the test manifold.Disconnect the air Construct a test manifold as shown in Figure 21.The air supply supply line. gauge must have a maximum full-scale reading of 15 PSI with 1/4 5. Monitor the pressure for one hour.Soap the entire exterior of or 1/10 Ib. increments.The pressure relief valve must be rated at a the tank and watch for active air bubbles which indicate a leak. maximum of 6 PSI (4 PSI for 12-foot tanks)to reduce the risk of overpressurizing the tank.The tester is responsible for verifying 6. When the test is complete,carefully release the air pressure that all of the test equipment is in good working condition and from the tank by opening the air supply valve.The air supply line property configured. should already have been disconnected.Remove the test manifold. FROM COMPRESSOR FROM COMRESSOR AIR SUPPLY VALVE PRESSURE RELIEF DEVICE AIR SUPPLY VALVE AIR SUPPLY GAUGE PRESSURE RELIEF AIR SUPPLY GAUGE SERVICE FITTING DEVICE SERVICE FITTING TEST MANIFOLD FIGURE 21 FIGURE 2-2