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Specification 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 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 Work Specified in Other Sections C. Each tank shall be equipped with two 22"I.D.manways.Each steel manway A. Liquid Level Gauges:Section 15174 cover shall have three 4"NPT fittings welded in place. B. Plastic Pipe:Section 15064 D. Materials: C. Anchor Bolts:Section 05501 D. Cast-in-Place Concrete:Section 03300 1. Tanks(Primary and Secondary)shall be manufactured with 100% isophthalic polyester resin and glass fiber reinforcement with no sand 1.02 Quality Assurance fillers. A. Acceptable Manufacturer:XERXES CORPORATION E. Annular Space B. Governing Standards;primary tank: 1. Tank shall have a space between the primary and secondary shell walls 1. ASTM standard document number D4021-81. to allow for the free flow and containment of all leaked product from the 2. Underwriters Laboratories,Inc.(U.L.)File MH 9061 for storage of flam- primary tank.Space also allows the insertion of a monitoring device mable liquids.A U.L.certification plate shall be attached to each tank. 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 Oil 1. Tank shall have nominal capacity of gallons. Burning 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. Military Specifications No.MIL-T-52777. 2.02 Accessories C. Governing Standards;secondary tank: A. Anchor Straps-Provide FRP anchor straps as manufactured by tank 1. Underwriters Laboratories,Inc.(U.L.)File MH 9061 for storage of flam- manufacturer.Number and location of straps shall be specified in current mable liquids.A U.L.certification plate shall be attached to each tank. installation instructions of tank manufacturer. 2. National Fire Protection Association(NFPA30)Flammable and B. Manways Combustible Liquids Code and(NFPA31)Standard for Installation of Oil 1. All manways to be flanged and 22"I.D.complete with U.L.listed Burning Equipment. gaskets,bolts and covers.(30"I.D.manway is also available.) 3. Factory Mutual Systems approval IM7AOAF. 2. Location as shown on drawings. 1.03 Submittals 3. Manway extension tubes shall be FRP and 24"long for manways shown A. Shop Drawings:Contractor shall submit copies of shop draw- on drawings. ings for each tank.Drawings shall show locations of all fittings,accessories, 4. Each steel manway cover shall have three-4"NPT fittings welded in and critical dimensions. place. B. Catalog Data:Contractor shall submit copies of manufacturer's liter- C. Fill Tubes ature to include copies of manufacturer's current installation Y Y 1. Tubes shall be FRP and factor installed b manufacturer. instructions. 2.. Location as shown on drawing. 3. Tubes shall be 4"diameter with 6"steel fitting and a 6"x 4"double tapped reducer bushing. PART I i Products 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 a separate 22"manway and shall be A. Loading Conditions-Tank shall meet the following design criteria: standard items supplied by tank manufacturer. 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 2. Vacuum Test:Every tank shall be mercury vacuum tested by the tank the requirements of U.L.label. manufacturer to assure structural integrity.Primary tank shall be tested 2. All standard thread fittings shall be half couplings and shall be 4"in to 11.5 inches and secondary tank 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 T of overburden Inlet 4" over the top 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 termi- tubes,submersible pumps,ladders when installed according to tank nate 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 test monitor fittings consisting of a 4"NPT fitting on the 1.1. secondary tank. 2. Both primary and secondary tanks shall be individually vented to atmo- 2. Tank shall have two monitor fittings,one near each end of the tank. spheric pressure.The tanks are not designed as pressure vessels. (Tanks of less than 3000-gallon capacity have only one monitor fitting.) TURY FIBERGLASS XERXES-,, I HORN PROCESSFIBERGLASS ENT'" C.F.123/DWT 7/87 CORPORATION