Laserfiche WebLink
-GuideSpecificaAi <br />. Short Form <br />(� The contractor shall provide a jacketed steel underground D. <br />storage tank which carries U.L. listings for both the primary <br />steel storage tank and the secondary containment jacket which <br />covers tank construction, corrosion protection, secondary <br />containment and for storage of flammable liquids. The tanks <br />shall be manufactured by a Total Containment, Inc., licensed <br />manufacturer. <br />Tanks shall be tested and installed in accordance with the E. <br />manufacturers published installation instructions and only <br />approved bedding and backfill material may be used. <br />a <br />Le <br />Long Form <br />Construction Standards <br />A. Primary Storage Tank <br />Shall be a steel underground storage tank build in <br />accordance with the requirements of UL -58 and tested and <br />labeled accordingly. <br />B. Secondary Containment Jacket: <br />Shall be a Tank Jacket`, as manufactured by Total <br />Containment, Inc. applied to the primary storage tank in <br />accordance with the requirements of Underwriters <br />Laboratories, by a licensed tank manufacturer and tested <br />and labeled accordingly. <br />Construction Materials <br />A. Primary Storage Tank <br />Shall be all welded constructed of prime steel, of <br />appropriate wall thickness as required by U.L., ASME, <br />API, NFPA 30 and UFC. <br />B. Secondary Containment Jacket <br />Shall be made of 100 mil high density polyethylene with <br />all extrusion welded construction. <br />Design Performance <br />0 <br />C. <br />Product Compatibility <br />Both the primary storage tank and secondary containment <br />jacket shall be compatible with gasoline, gasahol, <br />ethanol, methanol, jet fuel, av-gas, kerosene, diesel fuel, <br />and motor oil or fuel oil stored at temperatures not to <br />exceed 150°F. <br />Secondary Containment Jacket <br />The primary storage tank shall be contained in 360°, <br />air -pressure testable and unbreakable jacket; bonded <br />together with extrusion welds and sealed off at the fittings <br />by means of a compression O -Ring seal. <br />Interstitial Fluid Migration <br />There shall be an interstitial space between the primary <br />tank and secondary containment jacket, created by high <br />density polyethylene stand-off grid, with a high/low <br />profile, to allow 100% fluid migration between the wall <br />under maximum load conditions with a 5 to 1 safety <br />factor. <br />14 <br />Corrosion Protection <br />The primary storage tank shall provide striker plates under <br />each fitting to eliminate internal impact corrosion due to <br />dipsticking. The secondary containment jacket shall <br />totally isolate the primary storage tank from all of <br />corrosion causing elements without the need for cathodic <br />protection and tested accordingly. <br />Monitoring Capability <br />The secondary containment jacket shall provide a 2" NPT <br />interstitial access fitting for insertion of a leak detection <br />sensor down to the bottom of the tank. This fitting shall <br />be located at the lower end of the sloped tank. <br />F. Contained Attachments <br />Tanks shall be designed to accommodate pipe exits and <br />containment sumps in such a manner that connection to <br />the tank is secondarily contained and water -tight. <br />Integrity Testing <br />A. Primary Storage Tank <br />At the factory, a 5 p.s.i. air pressure/soap test shall be <br />performed to detect pin hole leaks, prior to shipment. <br />B. Secondary Containment Jacket <br />At the factory, a 2 p.s.i. air pressure/soap test shall be <br />performed to detect pin hole leaks, prior to shipment. <br />C. Site Testing <br />Tanks will be site tested as follows: a 5 psi air pressure <br />hold test shall be performed to the primary storage tank <br />and an air pressure/soap test may be performed to the <br />secondary containment jacket not to exceed 1 si.—^ <br />Note: T s ship sate witha continuous <br />vacuum (6 inches of mercury vacuum in the annular space <br />are not required to undergo site testing except where <br />required otherwise by code. <br />Accessories <br />A. Close -off Cap <br />All unused and non -contained fittings shall be plugged and <br />sealed with a protective cap to isolate fitting from the <br />surrounding environment. <br />B. Lifting Lugs <br />Lifting lugs shall be of a removable design to eliminate <br />metal exposure to the environment. <br />C. Anchor Straps <br />Anchor straps shall be provided with strap cushions <br />installed under each metal strap. Number and location <br />shall be specified by manufacturer. <br />D. Flanged Manways <br />24" and 30" manways are optional on tank diameters of <br />6', 8' and 10'. All manways shall be secondarily <br />contained and furnished complete with U.L. listed gaskets, <br />welded studs and covers. <br />