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Home My WebLink AboutDOMESTIC GAS TANKSABOVEGROUN6/UNDERGROUND D U-MESTIIQ TANM 120 - 2',00 wg f �fi rGr•'s5'lr I S l aS� '�..+' , 5 r .a Ll Iq 4- li iy �[ a •y art � �'Ri y+...y,'t7`•�' ft��r7' � "'��j � e�'�.6�//jj� ,,yit $fin` �1y r') ' � ! . r,,,�, � r� � - _ Y - rM yµr .• 8" dome in black plastic or white galvanized steel ®N TA I.ry'E.R S' NEW! . POWDURA r' Onecure�" Super Duraple.Topcoot With Zinc Rich Primer on•Aboveground POWOURAP-Onecurelm Two coat system properties incldde: • Zincrich,epoxy primer • Super durable TGIC polyester topcoat • Superior corrosion and edge protection • Patent pending formulated primer and topcoat • Dual service options for above or underground applications • Option -tk7: Ready -to -bury red oxide durable powder coating with black • polyethylene AGUG dome' • Option 42: Aboveground option with steel 8" AGUG dome • All valves and float gauges are centered under dome • Fabricated to the latest A.S,M.C. Code, Section VIII, Division 1 • Registered with the National Board #72 liquid level outage valve orifice reduces refueling emissions • Vacuum pre -purged to save time, money and product 'Applicable federal, state, orlocal regulations may contain specific requirements for Protective coatings and cathodic protection. The purchaser and installer are responsible for compliance with all federal, state, local and NFPA inrlu,try r� proteruwith h required and coating rnust bo continuous ranand uninterrupted d must comply with an local, state or national code. www_Trinit /Containers_com Call Toll Free: 888-558-8265 Con Prek NFP Rate evac Vass, with i tanks WA 120 % .454.2 250 w, 946,3 320 w, 1211.2 500we 1892.5 1000w ,c 3785,01 TRINITY* e , Contalning OurWorld's Energy General Specifications rms to the latest edition of the ASME code for are Vessels, Section VIII, Division 1. Complies with 58. at 250 psig from -20° F. to 1250 F. All tanks may be Ited to a full (14.7 psi) vacuum. Finish: Coated with epoxy red powder. ( Tanks coated ) epoxy powder must be buried). For Aboveground use, lay be coated with TGIC powder. ble federal, state or local regulations may contain requirements for protective coatings and cathodic X. The purchaser and installer are responsible for nce with all federal, state or local regulations. , W TI DRAWAL FLOAT GAUGE L.PnGAS -ANODE rt�CONNECTION /L7CJ l FILLER O O/r-VALVE MCE ULTIVALVE NAME ,�. RELIEF PLATE VALVE FITTINGS LAYOUT UNDER DOME tensions area AGUG VESSEL roximate DIMENSION AL INFORMATION OUTSIDE DIAMETER HEAD TYPE OVERALL LENGTH LENGTH HEIGHT LEG LEG WEIGHT QUANTITY 24° Ellip 5' - 5 13/16" WIDTH SPACING FULL LOAD PER 609.E mm „ 1671'.3mm 3' ' oil 911.4 mm 10 1/81, 257.2 3' - 0„ 245 lbs. 96 STAC 12 31.5 800,1 mm Heml 7'-21/2,, 3'-71/21, mm 12 3- 914.4 mm 111.1 kg. 31.5 „ Neml 2197,1 mm 8' 1104.9 mm 323.9 mm 31.610 1066,8 mm 472 lbs. 214.1 k 63 9 800.1 mm -11 3/4" 2736.9 mm 3' - 7 1/2" 1104.9 mm 12 3/4" 41.0 1/4" . 588 lbs. 45 37.42° Hem! " 91,1011 323.9 mm 1225.E mm 266.7 kg. 9 950.5 mm 2997.2 mm 4' -1 7/16,, 1255.7 mm 15° 381.0 mm 5' - 0" 871 ibs, 3Q 6 40.96° 1040.4 mm Heml 15' -10 13/16" 41 _ 4 5/16" 16 1/4" 1524.0 mm 395.1 kg 4846.6 mm 1344.E mm 412.8 mm 91.011 2743.2 1729 lbs. 15 5 mm 784.3 kin Rev: Jan. 27, 2016 Why Ti OR Corrode Underg' ound steel tanks corrode due to an electrochemical reaction different metals. The most common anode material is magnesium, 6etwee i the tank and the surrounding soil. The process of corrosion occurs ue to small voltage differences on the steel surface that result Which when coupled to steel results !n DC current flow tom the magnesium to the steel. The open circuit potential of steel r the In the fl 'w of DC current from one location to another. Where current 1lowsfr -0.50 volts referenced to a copper sulfate electrode. The open circuit „ the tank into the soil corrosion occurs, This location is called the anad in a corrosion circuit Where currentflows from the soil to the potential of magnesium Is about -1.55V to-i.eOV, g t tank, no orroslon occurs. two metals together, the difference of i to 1.2 -B volts results In current The progress of corrosion is determined b r connecting the flow to the tank that overcomes the natural corrosion cells that exist on the amo ��it of current flowing between the anode and the cathode and y the tank With this current available n the tank, s corrosion occurs. exist whether t e locations of the anode/cathode remain constant overtime. Corros(o rates are generally higher in wet soil environments since the conductiv of the soil promotes the flow t DC current In thecorrosionse hMagnesium Anodes circuit There are a variety of anode sizes end it prote ti Carrosion�'generally exhibits itself on underground tanks In either a general ov hall rusting or more commonly, a pitting attack. Pitlocations may result 1, rom metallurgical conditions of the steel suraface or sail variations s ch as rocks, salts, fertilizer, moisture concentration, oxygen concentration, etc. [I ,urnal coating coating is pet ►defects, whi current �tems are sacs when the a h as In under more comma lines. Electric electrical grai liveness. Sacrificial ce ftclal systems I Preventing corrosion Praecting underground tanks from corrosion is easily achieved bythe use Of two commoniyapplied protection methods: Kemal coating and Cathodic o protection. These methods are complementary 11W and should be used in conjunction with the other. An effective the steel from external protective Ion current from the anode to the cathode. An effective an Protect OvelOtthetanksurfaaearea. However ict Damage from construction or soil stresses create i may result in accelerated corrosion at the defect. n prevents corrosion at those defects b an external source, forcing the tank to beclame �n of sufficient DC current to the tank will prevent any urring. The two general of Iia1 and Impressed current Sacrificiacathol sic ystems are runt of current required for the protection Is small, wnd propane tanks. impressed current systems used for large structures such as large diameter (sofatlon of the tank from metallic piping systems is is critical for the cathodic protection systems c Protection Works NY creating a galvanic connection between two c an. The two primary alloys are designed as H 1d(OrAZs3j and Hlgdh Potential. The H-1 alloy is produced from recycled magnesium and has an open circuit potential of approximately is well suited for protection of underground ane tanks. The High Potential alloy Is 99% pure magnesium having an open circuitThis alloy up to -1.8V This alloy should be used forsoit applications over 10,000 ohm -cm resistivity, The two most common anode sizes used for underground Propane tanks are 9 lb. and 171b. The size designation relates to the metal weight. 10' 0f #12 TW Insulated wire is attached to the anodes, odesere then bacMlled In a mixture of gypsum, belland sodium su a e to lower the electrical resistance of the anode to soil. The mi low cost; nonhazardous,ctrically . e anode and eleconductive backfillure is a Thxt backflll Is then packaged in a cotton bag anbox or lb. and 45 !b. Paper bag. Actual shipping Weight d either a cardboard of these anodes with backflll is 27 Application Recommendations Magnesium anodes can protect underground tanks In Provides size and quantity alloy is generally very effective. The fallowing chart most soil provides size and quantity recommendations for varioTh size tanks based on conservative design assumptions. This chart covers soli conditions 10 to 10,000 ohm -centimeter reslstly 10,000 ohm -centimeter generally represent verye d tivitles higher than Of soil resistivl dry soils. Verification resistivity can at performed through soil analysts. Contact us for design recommendations in locations where soil resistiv(tles ex 1 o,00D ohm -cm, or It there Is no effective external coating on theta teed The propane service line from the tank to the house also nk considered in the cathodic protection design, unless, the service p Is Plastic. must be P All underground steel pipe should be externally coated with a corrosion resistant material. The service line should be electriwith e Isolated at the house with an Insulating fitting or union, If eleC is less than 50' in length, the tank anodes will provide sufficient Current Y to protect both tank and pipe, For longer lengthsservice pipe anode may be required at the house connectiof pipe, an additional If another metallic material such as copper is used for service the pipe should be electrically Isolated from the tank at the fill pipe connection. Copper and steel create a galvanic couple thatwi,,accelerate ' corrosion of the steel tank when directly connected to copper piping. Generally, copper piping does not require cathodic protection. b11 Type ;CRCK Ita,apilsa y;i� Sam �vel, Rocky ikli 5tbyfla1R.:r Areas Tenk Cap.;?st4'9dHi�i1�4� 5000 to 10000 ohm -cm �;. Size Qty, Alloy 120 250 # ;'i'i 9# 2 W-1 �I 325 Y ��i w:n ' �'7' 9# - I?i: a'y 2 H-1 Illsao 9# 2 H-1 11000 to X± fr"`�1� 9# 4 H-1 )500 4 H-1 000 ;i;;8x==-1r 'Based o 90% efleetive externs1 coat/ng,`2 maw current density, and 30- yearAnm life. Anode Installation 1. Date �j Ina size and quantity of anodes from application chart. 2. Whe a single anode is Installed, It should be located near the tank enter on either side of tank. S. When multiple anodes are Installed, space them evenly around the ts II k. See examples below. 7 an' de 2-anodes 4 anodes 4. Anode are shipped in either cardboard boxes or multi -wall paper)lasks. Remove outer container and bury the cloth bagged anode If anode is supplied in plastic bag, remove plastic bag before installing. 5. Install nodes approximately two to three feet from the tank and at leas. ;has deep as the center line of the tank. Anodes work best In local ons with permanent moisture, se generally the deeper the be er. 6.After pacing the anode, stretch out the anode connection wire and extend over to a connection point on the tank fill pipe. 7. Cover t,' a anode with approximately six inches of backfill and pour 5 allons of water on the anode to saturate the prepared backfill.' Water Is necessary to activate the anode. 8. Cannec the anode wire to the tank with a low electrical resistana connection. Examples are threaded stud on the tank fill Ipe or any accessible metallic connection point to the tank. A I connections should be coated with a moisture -proof materlal�'� 9. ideally, t ie tank connection Is made in the area of the tank fill Pipe wit In the covered dome. With access to the anode wire, subsequ nt testing of the tank can Include measurement of anode o put and verification of performance. 10.Verify performance of the anode using an appropriate test procedure. Mechani'_ —j" Onnection Under Dome Cathodic Protection Testing Procedure Equipment Needed: Digital Voltmeter, Red Test Lead Min, 12- Long & Black Lead Min. 2' Long, Reference Electrode (Copper/Copper Sulphate Half -Cell) STEP 1: Using a digital voltmeter insert the red test lead into the Volt jack of the meter and select the 2 or 20 volt DC scale. Clip red test lead connector to an uncoated metallic area of the tank, preferably to the fill pipe multivaive. A good solid connection Is very important. (DO NOT connect to shroud). STEP 2: Insertthe black test lead into the Common jack on the meter, and connect the opposite end of the lead to a charged reference electrode (%a cell). STEP 3: Remove protective cap from the porous plug at bottom end of electrode. Place porous plug and Into native soil (remove grass if necessary) at four locations around the tank (one an each side of the tank, and one at each end of the tank), If difficulty is encountered obtaining readings, moisten salt with water or dig Y2 cell deeper Into the soil. STEP 4: Record all four meter readings on an appropriate form. The least of all four readings should be a minimum of-0.850v or more negative. {Note: if any of the four readings are below (less negative) -0.850v then the tank is not fully protected). Charging Reference Electrode STEP 1: Unscrew and remove porous plug and of new reference electrode. Add delonized or distilled water to the copper sulfate crystals, filling electrode completely. The solution will turn blue in color and there should always be excess crystals at the bottom of the tube. DO NOT USE TAP WATER. STEP 2: Replace porous plug end of electrode and place in an upright Position so thatthe porous plug end Is facing In the down position and let stand for 1 hour before use. This will allow the porous plug to become completely saturated before use. Caution: Do not allow eleelrode to contact oll, road sails, or other substances )hat may contaminate the solulion 1) through porous plug. Do not allow elactroda to fro absorption eze. The Lk burner for use as a first stage regulator on any domestlo size ASME or DOT container In propane gas ations requiring �p to 1,600,000 BTU's per hour. The regulator is factory set to reduce container ure to an Intermediate pressure of approximately 10 PSIG, V9403TRv9 '/i' F NPT I Y" F NPT Over Outlet ' II eximum flow besedl on inlet pressure Z0 P51G fdghat inert Ina re uletor sOUn and delivery a ��6 0,000 ajlinganddaltve , 9.00 ry pressure 20,6 lower the sailing. g 0 ry pressure 20% lower than the regulator accurate first stage regulation In two -stage bulk ate pressure of 6 to itank systems, Reduce tank pressure to an 0 PSIG, Also used to supply high pressure burners for applications like furnaces or boilers, Also Incorporated In multiple cylinder Installations. 1Ir1.81 g61faIrmati®lm i4" F NPT Y" F. NPT /"Ef O -8 :R29'e's F POL 5.10 Yes 2,800,000 es %" F NPT 1-6 10 rctfor anal amphlesiegepressureconVni,moatellherinanrporeIsInteg Irellervalvearaepereoereilervatveah0uldbea acme Raw based on inlet pressure 20 Palo higherrhan there uiaiorsaNin and delivery olower p d In accordance g e ry pressure 20 /o lowarlhen the selling, d to raduoe first stage pressure of S to 20 PSIG down to burner pressure, normally 11" w,c. Lmedium commercial installations, multiple cylinder Installations and normal domestic loads, 119 Information atios� Z" 'A" F NPT #28 a/" F NPT Drill V4" F. NPT d an 10 PaiG iniel and g" w.o dernrerypressure 11" w.c. at 10 9" to 13° pair.W.0 Over Inlet 935,000 Inlet 'R Back Mount Regulator is designed to reduce first stage pressure of 5.10 PSIG down ire normally 11" w c. Designed as a second stage regulator for smaller appi(oatlons with floto w UP to 450,000 BTU/hr. and are 1de01 for homes n w inf®rmatli®n , mobile homes, and cottages. R !" FNPT %" NPT ode F.NpT � At 10 9" to 13" . flow based on 10 PSIG inlet and 9" W,Q, del YeiG inlet yl/ C, Over Inlet 450,000 , lY pressure. filLi Liffen N �. 0 t�1 ` r