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0 —0 i <br /> Whenever the tanks are stored at the site,chock them in place to 0WARNING: <br /> prevent rolling. (See Figure 1-2).Tie them down if high winds are When the tank is under pressure,the manways and/or fittings <br /> expected. may dislodge or the tank may rupture and result in death, <br /> After delivery and before pre-installation testing,visually inspect severe personal injury,or property damage.Before beginning <br /> 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 <br /> cracks or deep scrapes). location.ALWAYS ATTEND THE TANK DURING THE TEST. <br /> Verify that all of the safe-delivery provisions of the Xerxes Avoid extended exposure to the manways,fittings and ends of <br /> "Damage Free Delivery"program have been followed.Sign the the tank during the test. <br /> driver's release form. ZLWARNING: <br /> The maximum test pressure is 5 PSIG(3 PSIG when testing a <br /> 12 foot tank).The pressure gauge must be positioned so that <br /> the pressure readings can be clearly read at all times. <br /> lilt <br /> -IIIII <br />` IIII IIII- <br /> - I II <br /> ME MAX <br /> I - <br /> IIIII-11 5 PSIG -IIII <br /> FIGURE 1-2 I III_ I II R1111 <br /> I II <br /> �- • III - IIII- <br /> All Xerxes tanks are tested prior to shipment but it is required that mull =—_— — =IIIII— <br /> all tanks be tested prior to installation in order to verify the 1111119 = I = = III <br /> absence of shipping and handling damage. In the unlikely event <br /> of a leak,it is most likely to develop at a manway or a fitting.After <br /> installation and before backfilling to grade,the test must be 1.Open one service fitting. Remove the remaining fittings, <br /> repeated to verify that no damage has occurred during redope,and reinstall fitting plugs. <br /> installation. <br /> Refer to the appropriate section below for the instructions for 2.Install the test manifold in the open service fitting.Connect the <br /> testing a single wall tank,a double wall tank with a dry interstitial pressure source to the test manifold.(See Figure 2-2). <br /> 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 <br /> If damage is detected,DO NOT ATTEMPT REPAIRS.Contact the tank).Add or remove air as necessary and allow the pressure <br /> UST Coordinator at the Xerxes plant nearest you or the Technical to stabilize. <br /> Service Department at Xerxes corporate office.Telephone 4.Close the valve on the test manifold.Disconnect the air supply <br /> numbers are found on the last page of this manual. line. <br /> 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 <br /> gauge must have a maximum full-scale reading of 15 PSIG with the tank and watch for active air bubbles which indicate a leak. <br /> 1/4 or 1/10 Ib.increments. 6.When the test is complete,carefully release the air pressure <br /> Zt WARNING: from the tank by opening the air supply valve.The air supply <br /> line should already have been disconnected.Remove the test <br /> The pressure relief device or regulated air source must be manifold. <br /> rated at a maximum of 6 PSIG(4 PSIG for 12 foot tanks)to <br /> reduce the risk of overpressurizing the tank. <br /> The tester is responsible for verifying that all of the test <br /> equipment is in good working condition and properly configured. <br /> FROM COMPRESSOR <br /> PRESSURE RELIEF DEVICE AIR SUPPLY VALVE <br /> FROM COMPRESSOR f� AIR SUPPLY GAUGE <br /> SERVICE FITTING <br /> AIR SUPPLY VALVE <br /> PRESSURE RELIEF AIR SUPPLY GAUGE <br /> DEVICE <br /> SERVICE FITTING <br /> TEST MANIFOLD FIGURE 2-2 <br /> FIGURE 2-1 <br />