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GUIDE SPECIFICATIONS DOUBLE WALL FIBERGLASS REINFORCED PLASTIC (FRP) UNDERGROUND STORAGE TANKS SHORT FORM: The contractor shall provide Double Wall Fiberglass Reinforced Plastic(FRP)U.L.labeled underground storage tanks as shown on the drawings. Sizes and fittings shall be as shown.The tanks shall be Century-Cast Tanks as manufactured by XERXES CORPORATION. Tanks shall be tested and Installed with pea gravel or crushed stone as specified in the current installation instructions provided with the tank. LONG FORM: Section 15177-1 3. Tanks shall be capable of storing gasoline or gasohol(10%ethanol and I 90%gasoline mixture),jet fuel,diesel fuel,AV gas,potable water at Part I General ambient underground temperature or fuel oil at temperatures not to exceed 150°F 1.01 Related ftrk Specified in Other Sections O, Tanks with 3,000 gal.capacity and larger have two 22"I,D.manways. A. Liquid Level Gauges:Section 15174 Tanks smaller than 3,000 gal.shall have only one 22"I.D.manway.Each B. Plastic Pipe:Section 15064 steel manway cover shall have three 4"NPT fittings welded in place. C. Anchor Botts:Section 05501 D. Materials: D. Cast-in-Place Concrete:Section 03300 1. Tanks(Primary and Secondary)shall be manufactured with 100 1.02 Quality Assurance isophthalic polyester resin and glass liber reinforcement with no sand A. Acceptable Manufacturer:XERXES CORPORATION liners. B. Governing Standards;primary tank E Annular Space 1. ASTM standard document number D4021-81. 1. Tank shall have a space between the primary and secondary shell 2. Underwriters Laboratories,Inc.(LLL.)File MH 9061(N)for storage of walls to allow for the free flow and containment of all leaked product flammable liquids.A U.L.certification plate shall be attached to each from the primary tank.Space also allows the insertion of a monitoring tank. device through a monitoring fitting. 3. National Fire Protection Association(NFPA30)Flammable and F Tank Dimensions(Refer to Xerxes literature on gallonage.) Combustible Liquids Code and(NFPA31)Standard for Installation of 1. Tank shall have nominal capacity of gallons. Oil Buming Equipment. 2. Tank shall have nominal outside diameter-feet. 4. National Sanitation Foundation,Standard 14. 3. Tank shall have approximate overall length of_feet. 5. Factory Mutual Systems approval J.I.1G4A0.AF 2.02 Accessories 6. Military Specifications No.MIL-T-52777(A). A. Anchor Straps-Previde FRP anchor straps as manufactured by tank C. Governing Standards:secondary tank; manufacturer.Number and location of straps shall be specified in current 1. Underwriters Laboratories,Inc.(U.L.)File MH 9061(N)for storage of installation instructions of lank manufacturer, flammable liquids.A U.L.certification plate shall be attached to each B. Manways tank. 1. All manways to be flanged and 22"I,D.complete with U.L.listed 2. National Fire Protection Association(NFPA30)Flammable and gaskets,bolls and covers.(30"I.D.manway may be available on .m�f Combustible Liquids Code and(NFPA31)Standard for Installation of certain size tanks.) Oil Burning Equipment. 2. Location as shown on drawings. 1.03 Submittals 3. Manway extension tubes shall be FRP and 24"long for manways A. Shop Drawings:Contractor shall submit copies of shop draw- shown on drawings. ings for each tank.Drawings shall show locations of all fittings,accesso- 4. Each steel manway cover shall have three-4"NPT fittings welded in nes,and critical dimensions. place. B. Catalog Dale:Contractor shall submit-copies of manufacturers lifer C. Fill Tubes ature to include copies of manufacturer's current Installation 1. Tubes shall be FRP and factory installed by manufacturer. instructions. 2. Location shown on drawing. 3. Tubes shall be 4"diameter with 6"steel fitting and a 6"x 4"double PART II Products tapped reducer bushing. D. Gauge Plates-Shall be installed at location shown on drawing. 2.01 Double Wall Fiberglass Reinforced Plastic(FRP)Underground Storage E. Heating Coils Tanks with a Primary(internal)tank and a Secondary(external)tank. 1. Heating Coils shall be installed in separate 22"manways and shall be A. Loading Conditions-Tank shall meet the following design criteria: standard items supplied by tank manufacturer. �l 1. Internal load:Primary and Secondary tanks shall withstand 5 psi air 2. Location as shown on drawings. pressure test with 5 to 1 safety factor.Contractor shall individually test F NPT Threaded Fittings tanks prior to installation as this is to test for leakage.Maximum test pressure is 5 psi. 1. All threaded fittings shall be a material of construction consistent with the requirements of U.L.label. 2. Vacuum Test:Every tank shall be mercury vacuum tented al the tank 2, All standard threaded fittings shall be half couplings and shall be 4"in manufacturer to assure structural integrity.to Primary lank shall be tested 9 1011.5 inches and secondary lank tested to 9.5 inches mercury diameter.Reducers are to be used for smaller sizes where shown and vacuum, provided by contractor. 3. Surface Loads:Tank shall withstand surface H-20 axle loads when 3. Sizes Standard Other Sizes properly installed according to current manufacturer's Installation Fill 4" instructions. Gauge 4" 4. External hydrostatic pressure:Buried in ground with 7'of overburden Inlet 4" l over the lop of the tank,the hole fully flooded and a safety factor of 7:1 Outlet 4" against general buckling. Vent 4" 5. Tanks shall support accessory equipment such as heating coils,drop 4. Suction Line-Shall be installed by contractor on site.Pipes shall tubes,submersible pumps,ladders when installed according to tank terminate a minimum of 4"from bottom of tank. manufacturer's recommendations and limitations. 5. Return line shall be installed by contractor. B. Product Storage: G. Monitor Fittings 1. Tanks shall be capable of storing petroleum with specific gravity up to 1. Tank shall have two test monitor fittings consisting of a 2"NPT fitting on 1.1. the primary lank and a 6"NPT fitting directly above on the secondary - 2. Both primary and secondary tanks shall be individually vented to atmo- tank. spheric pressure.The tanks are not designed as pressure vessels. 2. Tank shall have two monitor fittings,one near each end of the tank. ^` X E RX E S O CENTURY FIBERGLASS" HEIL PROCESS EQUIPMENT'" QRNYTE'"FIBERGLASS CT 123;DWT 10/85 CORPORATION