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HomeMy WebLinkAboutGAS TANK PAPERWORKABOVEGROUND/UNDER, GROUND DOMESTIC TANKS. io z-z,000.,.:g. . ,Ai�.T.rwne 8" dome in black plastic or white galvanized steel IJ IbO N:TA J'1N E R S :y M NEW! POWDURA° OneCure>M. Su e p r Durable Ta coat .with Zinc Rich Primer onAboveground POWDURA°Onecure'r" Two coat system properties incldde: • Zinc rich -epoxy primer • Super durable TGIC iiolyester topcoat • Superior corrosion and edge protectiorf • Patent pending formulated primer and.toi)coat • Dual service options for above or underground applications • Option #1: Ready -to -bury red oxide durable powder coating with black • polyethylene AGUG dome* • Option #2: Aboveground option with steel 8" AGUG dome • All valves and float gauges are centered under dome • Fabricated to the latest A.S.M.E, 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 '1Pplicable 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 industry rnpurattonr.. C.,tr,o�r� protection is required and coatvr-9 must be continuous and uninterrupted and must comply with an local, state or national code. www.TrinityContainers_com Call Toll Free: 888-558-8265 All A TRINITY* Contarning Our World's Energy"' WIDTH General Specifications Tns to the latest edition of the ASME code for Ire Vessels, Section Vill, Division 1. Complies with 58. Rated at 250 psig from -20° F. to 125' F. All tanks may be evacul ted to a full (14.7 psi) vacuum. Vessel Finish: Coated with epoxy red powder. ( Tanks coated with the epoxy powder must be buried). For Aboveground use, tanks i nay be coated with TGIC powder. Applicable federal, state or local regulations may contain specifi fto requirements for protective coatings and cathodic )rote c ion. The purchaser and installer are responsible for ;omplil nce with all federal, state or local regulations. WA 120 w .454.2 250 w 946.3 320 wl 1211.2 50WC 1892.5 1000 cc 3785.01 - - WITHDRAWAL / - VALVE FLOAT once`, GAUGE L'P' W ANODE � � CONNECTION FILLER ® FILLER VALVE i O SERVICE / MULTIVALVE NAME ---/- PLATE RELIEF VALVE FITTINGS LAYOUT UNDER DOME AGUG VESSEL DIMENSIONAL INFORMATION enslons are approximate OUTSIDE DIAMETER HEAD TYPE OVERALL LENGTH OVERALL LEG LEG WEIGHT QUANTITY HEIGHT WIDTH SPACING FULL PER 24" 609.6 mm Elllp 51.5 13/16" 31.011 10 1m 3' - 0" 245 lbs. LOAD STACK 31.5" Hem! 1671.3mm 911.4 mm 257.2 mm 914.4 mm 111.1 kg. 96 12 800.1 mm 7' - 2 1/21, 2197.1 mm 3' - 7 1/2" 1104.9 mm 12 3/4" �� 63 g 31.5" Heml 8' -11 3/4" 3' - 7 1/21, 323.9 mm 12 3/4" 1061- mm �1411 ks,. g 800.1 mm 2736.9 mm 1104.9 mm 4' - 0 1/4" 588 Ibs. 45 g 37.42° Hem! 9 -10 ,� 323.9 mm 1225.6 mm 266.7 kg. 950.5 mm 2997.2 mm 4' -1 7/161, 1255,7 mm 15" 381.0 5' - 0'l 871 Ibs, 30 6 40.961, Hem[ 15' -10 13/16" 4' - 4 5/16" mm 1524.0 mm 395.1 kg 1040.4 mm 4846.6 mm 1344.6 mm 16 1/4" 412.8 mm 91.011 2743.2 1729 lbs. 15 5 mm 784.3 ka Rev; Jan. 27, 2016 between occurs di in the flog flows fror the anode tank, no c, the amnur Corrosion circuit. Corrosion general ovi may result variations s coating insulatE the flow ofcorrc 'Vernal coating 10 coating is per Iny defects, whi athodlc protecti C current from ithode. Applicai Troslon from oa stems are sacdf ad when the am th as in undergi more common] dines. Electrica electrical grour ;tiveness. Sacrificial C, ificial systems S Corrode Intl steel tanks corrode due to an electrochemical reaction different metals, The most common anode material is ma nesl to tank and the surrounding soil. The process of corrosion Which when coupled to steel results In DC current flow corn the to small voltage differences on the steel surface that result magnesium to the steel. The open circuit potential of steel is about of DC current from one location to another. Where current the tank into the soil corrosion occurs. This location is called -0'50 volts referenced to a b i a corrosion circuifi. Where currentflows from the soil to the potential of magnesium is about155V to ei1.S0U e 6 The open circuit two metals together, the difference of 1 to 1.25Vvolts results in current rosion occurs. The progress of corrosion is determined b Y connecting the flow to the lank that overcomes the natural corrosion cells that exist on Of current flawing between .the anode and the cathode and Y the tank With this current available to the tank, no corrosion occurs, locations oftheanode/cathode remain constant overtime. Ites are generally higher in wet soil environments since the of the sail promotes the flow of DC current In the corrosion Magnesium Anodes There are a variety of anode sizes and alloys used for cathodic protection. The two primary alloys are designed as H-1 (or AZ6s) and High Potential. The H-i alloy is produced from recycled magnesium nerally exhibits itself on underground tanks in either a Ii rusting or more commonly, a pitiing attack. Pit locations and has it open protect potential approximately is well suited for protection of underground proPropane tanks. This alloy )m metallurgical conditions of tha steel suraface or sail Potential alloy is 99% pure magnesium having an open circuit potential h as rocks, salts, fertilizer, moisture concentration,, oxygen etc. ohm-cm8V This alloy should be used forsoA Preventing Corrosion Protectin tanks from corrosion easily achieved bythe u Of two Commonlyappif Protection method external coating a cathodic protection These two method are and should be used ai conjunction with th other. An effective the steel from texternal he soil environment, thus protective m current from the anode to the Cathode, An effective,ng ,t- Damage r99%ofthetanksurfacearea. However; .t. Damage from construction or soil stresses create may result In accelerated corrosion at the defect. Prevents corrosion at those defects by applying in external source, forcing the tank to became i of sufficient DC current to the tankwill prevent any rring. The two general RI and impressed currentt Sacrificial ypes Of cathodic stems are int of current required for the protection is small, and 'propane tanks. impressed current systems used for large structures such as large diameter �olatlan of the tank from metallic piping systems Is critical for the cathodic protection system's an c Protection Works by creating a galvanic connection between two I appllcatlons over 10,000 The two most common anode sizes used for tanks are 9 lb. and 171b. The size designation,relates to the underground propane and 10' of #12 TW insulated wire is attached to the anodes. Is then backfilled In a mixture of metal weight. d to lower the electrical resistance of the anode to so In rhodum sulfate Anodes are ad law cost, nonhazardous, electrically conductive backflll. The s; a mixture is a backoll is then packaged in a cotton bag and.elther a cardboard box or Paper bag. Actual shipping weight of these anodes With bap node and • lb. and 45 lb. kfill Is 27 s ry Application Recommendations n Magnesium anodes can protect underground tanks in most soil e conditions. The H-f alloy Is generally very effective. The following providessizeandquantityrecommendationsforvariousslzetanks bas oil on conservative design assumptions. This chart covers soil conditionsChart up to 10,000 ohm -centimeter reslstivi .based 10,000 ohm -centimeter generally represent very esfstivitles higherthanof soil resistivity can be performed through s� analysis. Verification eriffic tion for design recommendations In locations where soil resistivlties 10,000 ohm -cm, or if "there is no effective external coating on the us exceed The propane service line from the tank to the house also tank. considered in the cathodic protection design, unless the service line Is plastic. All underground steel pipe should be externally coated be a corrosion resistant material. The service lips should ly Isolated at the house with an insulating fitting or union, If se d with is less than 50' cn length, the tank anodes will provide suffic electrically to protect both tank and service pipe anode may be required at the house connectionger ons, of I lent current Pipe, an additional If another metallic material such as copper is used for serviCe PIPIng the pipe should be electrically isolated from the tank at the fill ! e connection. Copper and steel create a galvanic couple that will accelerate corrosion of the steel tank when directly connected to copper piping. Generally, copper piping does not require cathodic protection. Type ;;a�''1!mt@'t?aue;;clay; Sand. Rocky ;:ySanily`cLam';Y _Aral, Areas cap. r5bto :50Q0 uiri!.:oin 5000 to 10000 ohm -cm Size Qty, Alloy :h�ei rlsfs• ����.i; 9# 1 H-1 is di!;u�� 9 �' ��Vy,6sg1 �1 H-1 10 �1#firis'2a?(=' 'Based on 90% eflective extemal coating, 2 malft2 current density, and So_ life. Anode Anode Installation 1. Deterrr'Ina size and quantity of anodes from application chart. 2. When single anode is Installed, .it should be located near the tank center on either side of tank. 3. When r luitipie anodes are installed, space them evenly around the tanl . See examples below. 7 anode 2 anodes 4 anodes 4.Anodes are shipped in either cardboard boxes or multi -wall papersaiks. Remove outer container and bury the cloth bagged anode. If anode is supplied in plastic bag, remove plastic bag before in tailing. 5. Install anodes approximately two to three feet from the tank and at least ads deep as the center line of the tank. Anodes work best In locations with permanent moisture, so generally the deeper the bette�ji. 6.After placing the anode, stretch out the anode connection wire and extend over to a connection point on the tank fill pipe. 7. Cover the anode with approximately six inches of backfill and pour 5 gallons of water on the anode to saturate the prepared backfill. Water is necessary to activate the anode. 8. Connect the anode wire to the tank with a low electrical resistance connection. Examples are threaded stud on' the tank fill pipe or any accessible metallic connection point to the tank. All annectlons should be coated with a moisture -proof material. 9. Ideally, th tank connection is made in the area of the tank fill Pipe within the covered dome. With access to the anode wire, subsequen# testing of the tank can Include .measurement of anode output and verification of performance. 10.Verify performance of the anode using an appropriate test procedure. Mechanic __. ''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 multivalve. 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 (lr2 cell). STEP 3: Remove protective cap from the porous plug at bottom end of electrode. Place porous plug and into native soli (remove grass if necessary) at four locations around the tank (one on each side of the tank, and one at each end of the tank). If difficulty is encountered obtaining readings, moisten soil with water or dig % 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 deionized 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. STEP2: Replace porous plug end of electrode and place in an upright position so that the 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 electrode to contact oil, road salt$ , or other substances that may contaminate the solution by absorption through porous plug. Do not allow electrode to frea�P_ Ideal for use + e 1 as lr first shone regulator T any dome,tfo size gsME or l]p7 container in propane gas inessurlons requlHng up to 1,500,000 BTl!'s per hour. The regulator it factory set n re pressure to an intermediate pressure of approximately 10 PSIt3. duos container • -��°�° au;b tower Than the saHing.V �1O" U1e regulator ae0ing and delivery pressure 20% Iowa" Than The re - gWator ---- ,,,ul„Wie cylinder (nstallatlons. '-'-F.-l—nons like 'n "fiat pressure 20 PSIG hl8 herthen the reg ulalorsetil"g ry and dellve rr Y`a 1tlll'" verve should be epecigad In accordance pressure 20% lower Than the setting. _ - "mestto loads, - • -• inlet anal 9- W'm darrvery pressure. The LV3403SR Back - • e . Mount Regulator is designed to reduce first stage burner pressure normally 11 e w c. Designed as a second stage regulator requlrementsiup to 450,000 BTU/hr. and are as S far homes g pressure of 5.10 PSIG to down Dirdetrl� g lator for smaller appltcatfona with now �q 1"14 'ml�to®� , mobile homes, and cottages.