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3.1.1.The applicable inspection and testing procedures set 3.3.2.If the tank being installed is not an air-testable tank,pro- forth in SECTIONS 3 and 4 must be performed to validate the ceed to SECTION 5. limited warranty. 3.3.3.See SECTIONS 3.4. through 3.9.for specific instruc- 3.1.2.All tanks are tested and inspected at the factory prior to tions for preinstallation testing procedures. shipment. However,in order to verify the absence of any dam- 3.3.4.See SECTION 4 for preinstallation testing instructions - age resulting from shipping or handling, prior to installation all for specific types of air-testable tanks. - tanks must also be inspected at the site.Some tanks must also be tested at the site prior to installation according to the 3.3.5.Someone must be with the tank at all times during air applicable procedures. testing. ® 3.3.6. Prior to the pressure test,remove all plugs,apply _ WARNING sealant,and replace and tighten plugs. Always secure the tank before moving, rotating or lifting it. This is commonly done by connecting a crane or backhoe to ® WARNING the lifting lugs. Failure to follow this warning could result in death or serious injury. When the tank is under pressure,the manways,access = openings and/or fittings may dislodge,or the tank could ® WARNING rupture,and this could result in death or serious injury. Be- fore beginning the air test,notify all people on the test site While moving or lifting the tank,do not position any part to remain in a safe location.NEVER LEAVE A TANK UNDER _ of your body underneath the tank. Failure to follow this PRESSURE UNATTENDED.Stand clear of manways,fittings warning could result in death or serious injury. and tank ends during the test. ® WARNING3.4. PREPARING THE TANK FOR AIR TESTING Do not lift or hoist a tank under pressure. Failure to follow 3.4.1.The air test pressure is 5 psig(3 psig for 12-foot-diameter this warning could result in death or serious injury. tanks).See FIGURE3-1. 3.1.3. Not all tanks are air-testable in the field. If a tank needs ® WARNING to be hydrostatically tested,see SECTION 13.3. Do not overpressurize the tank.Position the pressure gauges 3.1.4.If the tank is a water/wastewater tank equipped for op- so that the pressure readings can be clearly read at all times. tional preinstallation testing, after inspecting the tank(see The pressure gauge must have a pressure-relief valve that is SECTION 3.2.),follow procedures in the Xerxes supplement, used and set at 6 psig(4 psig for 12-foot-diameter tanks).Fail- ure to follow this warning could result in death or serious injury. Preinstallation Testing Instructions for Water/Wastewater Tanks Factory-Equipped for Pressure Testing. See SECTION 20 for II - =IIIII information on how to obtain this supplement. =IIIII - 3.1.5. If damage of any kind is detected,contact the plant IIIII- —IIIII from which the tank was shipped before installing the tank. =IIIIIIIIII NOTE: Do not attempt unauthorized repairs. IIIII= LO I=IIIII -IIIII3.2. INSPECTING INSPECTING THE TANK IIIII=II II-IIIII _3.2.1.Thoroughly inspect the entire outside surface of the tankfor signs of shipping or handling damage. Rotate or lift thetank to inspect the bottom of the tank.3.2.2. If damage of any kind is detected,contact the plant III = I I from which the tank was shipped before installing the tank. =IIIII =IIIII NOTE:Do not attempt unauthorized repairs. Note:Maximum is 3 psig for 12-foot-diameter tanks. 3.3. PRETESTING PROCEDURES NOTICE FIGURE 3-1 3.4.2.The tester is responsible for verifying that all of the test Do not install any piping or fittings other than test fittings equipment is in good working condition,and is properly con- - until all preinstallation testing has been completed.Failure figured and calibrated. to follow this notice may result in property damage. 3.4.3. Construct a test manifold with two pressure gauges as NOTICE shown in FIGURE 3-2. Each pressure gauge must have a max- imum full-scale reading of 15 psig with graduations in 1/2 psig Never pressurize a wet interstitial space.Doing so may re- increments, and a pressure-relief valve set at 6 psig(4 psig for sult in damage to the primary tank and/or tank failure. 12-foot-diameter tanks). 3.3.1.All UL-labeled tanks,chemical tanks and potable water 3.4.3.1.When air testing multicompartment tanks, a test mani- tanks must be air tested after backfill is brought close to the fold is needed for each compartment.See FIGURE 3-2. top of the tank. 4