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1.3.7.7.19.Measure the distance from the tank top(inside) 2: HANDLING AND to the top of the standpipe.Subtract the distance from the nail to the base of the dipstick and record this measurement. STORING TANKS 1.3.7.7.20.Subtractthe second measurement(inside tank top to top of standpipe)from the first measurement(tank bottom 2.I.GENERAL to top of standpipe)to calculate the deflection. 2.1.1.Take care not to drop or damage the tank during loading,unload- 1.3.7.7.21.Record the deflection at the appropriate ing,handling and storage at the jobsite. place(as Measurement#1,#2,#3 or#4)on the Tank 2.1.2.Move tanks by lifting and setting only.Do not move tanks Installation Checklist. by rolling ordragging. 2.1.3.Always lift tanks by using the lifting lugs provided with CALCULATION AND COMPARISON the tank.Distribute the lifting load evenly between the lifting lugs.Use spreader bars and equal length slings as required. 1.3.7.7.22.To calculate the deflection at any time during NOTE:Larger tanks may be provided with guide lugs for installation,take a diameter measurement and subtract it from attachment of guide ropes during lifting and positioning Measurement#1. operations.Do not use guide lugs for lifting. 1.3.7.7.23.Compare this calculated deflection to the applicable allowable deflection shown in Table 1-6. NOTICE Never roll,drag or drop the tank.This could result in damage to the tank. Tank Diameter Allowable Deflection 2.2•UNLOADING, HOISTING AND GUIDING TANKS 2.2.1.Complete the following steps before unloading or relocating the 4-foot /z"[1.3 cm] tank on the jobsite(and before preinstallation testing at the jobsite): 6-foot 3/4"[1.9 cm] • Visually inspect the entire exterior surface of the tank to make sure 8-foot 1%"[2.9 cm] that no shipping or handling damage has occurred.Look particularly for visible damage,cracks or deep scrapes. 10-foot 1112"[3.8 cm] • Sign the shipping papers accepting the tank as delivered. Any damage observed must be noted in these papers. 12 foot 13/a"[4.5 cm] • Be sure that all equipment used to lift the tank is rated to handle the load. See Appendices 131,132 and 133 in this Installation Manual forweights. 1.3.7.7.24.Deflection above the allowable limit indicates the tank is • Select a smooth,solid,level area on which to place the tank,and clear not properly installed. that area of all large rocks,trash and debris. • Make sure all tools and other items that may damage the tank during 1.3.7.8.ONSITE PRESSURE unloading are removed from the trailer bed. TESTING REQUIREMENTS 2.2.2.Make sure the tank is secured in such a way that it does not roll 1.3.7.8.1.At various stages of the installation process,there may off the truck when unloading the tank from the truck. be onsite testing requirements. A WARNING 1.3.7.8.2.To pressure test tanks,you need to construct a test Do not release straps securing the tank to the truck until lifting manifold.See Figure 4-1. • The pressure-supply gauge must have a maximum full-scale reading equipment(such as a crane)is secured to the tank's lifting of 15 psig[ -s kPa]. lug(s)and until anyone in a position to be injured by the tank's movement is in a safe location.Failure to do so could result • The pressure relief device must be rated to a maximum of 6 psig[40 kPa],or 4 psig[28 kPa]for a 12-foot-diameter in death,serious injury or property damage. tank,to reduce the risk of overpressurizing the tank. A WARNING NOTE:For multicompartment tanks,you need a test manifold Always secure the tank before moving,rotating or lifting for each compartment. it.This is commonly done by connecting a crane or backhoe to the lifting lugs.Failure to follow this warning could result in death or serious injury. A WARNING While moving or lifting the tank,do not position any part of your body underneath the tank.Failure to follow this warning could result in death or serious injury. 14