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17.3.1.2.Empty existing tanks to less than one-quarter(1/4)of CAUTION capacity. Storing products and materials other than those identified in 17.3.1.3. Remove the surface slab. the manufacturer's applicable limited warranty will void a the excavation for the new tanks,but leave Xerxes'obligations under the limited warranty and may re- 17.3.1.4. Enlarge sult in tank failure and/or damage to surrounding property. as much backfill as possible around the existing tanks. 18.2.2.All products and materials must be stored at ambient 17.3.1.5.Install shoring, if necessary,to make sure that exist- temperature except as follows: ing tanks do not move and that sufficient backfill remains around them. 18.2.2.1.The maximum temperature for storing fuel oils is 150°F. 0 WARNING 18.2.2.2.The maximum temperature for storing nonpotable water is 150°F. Failure to shore tanks if necessary to keep the existing NOTE:Potable water is to be stored at ambient temperature. tank(s)from moving could result in death or serious injury. 17.3.1.6. Follow the procedures and requirements for installing 18.2.2.3.The maximum temperature for storing wastewater the tanks as outlined in this Installation Manual. products and materials is 150°F. 17.3.1.7.See SECTION 6 for backfill requirements,and 18.22.4.The maximum temperature for storing chemicals is 100°F. SECTION 7 for excavation and spacing requirements. CAUTION Q CAUTION Introducing or storing a product or material into a tank in excess of the allowable temperature may damage the tank. If any existing tank(s)should move during the installation of nFailure to follow this caution may result in damage to the now tanks,they must be removed and reinstalled according tank and/or surrounding property. to tank manufacturer's instructions.Failure to follow this caution may result in minor or moderate injury. 18.3. ENTERING TANKS 18. OPERATING GUIDELINES 18.3.1.Do not allow anyone to enter the tank unless it has been properly emptied and vented,and unless the person entering 18.1. GENERAL the tank has been trained in confined-space entry procedures 18.1.1.Owner must retain the Installation Manual and Operat- and applicable OSHA regulations. ing Guidelines for future reference to operating guidelines. 0 WARNING 18.1.2.In addition to these installation instructions and operat- Improper tank entry could cause fire,explosion or asphyxiation, ing guidelines,follow all federal,state and local laws,regula- and could result in death or serious injury. tions,codes and safety precautions that pertain to underground storage tanks and/or their associated systems. 18.4. FILLING TANKS (IN GENERAL) 18.1.3.Consult supplemental materials(see SECTION 20), 18.4.1. Never overfill the tank. tank brochures,separate product instructions(such as 18.4.2. If pump-or pressure-filling a tank,owner/operator oil/water separators)and separate accessory instructions, must take precautions to prevent overpressurization. which are available upon request from the Xerxes customer 0 service coordinator. Most of these documents are also avail- WARNING able at www.xerxes.com. Overpressurizing the tank could result in tank failure,and 18.1.4.Consult the applicable limited warranty for further op- could result in death or serious injury. erating guidelines and limitations.A copy of the applicable 0 WARNING Xerxes limited warranty is found in the printed material that accompanies each tank,in each applicable product brochure If a tank does not have overfill protection,the vent must be unrestricted and the vent size must be equal to or greater and at www.xerxes.com. It is also available upon request from than the fill.Failure to follow this warning could result in the Xerxes customer service coordinator. death or serious injury. 18.2. TEMPERATURE LIMITS FOR STORED 18.5 FILLING UL-LABELED TANKS PRODUCTS AND MATERIALS WARNING 18.2.1. Each Xerxes tank is designed to store materials identi- fied in the manufacturer's applicable limited warranty. Xeres does not recommend pump-or pressure-filling of the tank because an overfill or overpressurization could occur. CAUTION Overfilling the tank while under pressure could cause tank failure even if the tank is vented properly.Failure to follow Products and materials must be stored in the tank appropri- this warning could result in tank failure,and could result in ate for the specific product or material.Failure to follow this death or serious injury. caution may result in damage to the tank and/or surrounding 18.5.1. Each time the tank is filled,the owner/operator must property. make sure the tank is properly vented.See SECTION 14. 25