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Home My WebLink AboutTANK PAPERWORKA -W let", j 8" dome in black plastic or white galvanized steel 9 T11 Ma'.0,1 ,NEW'! ri Mejopegat 900ROO'neOu M 151uporkAd with Zin jtfioPgftn'q:onAbPuqQr'dund cR powbow6ne.Gdre7Twdeopt,system,,oroperbes.insu— • Super- duralbwTGIC flbivestedopcoat Superior C6,WsIbli,and odge prote'ction, •-Patent pending formulatddpnmprand tofidoat 7e • Dual service options for above or underground applications • Option in: 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 gaL190S are centered under dome • Fabricated to the latest A.S.M.E. Code, Section Vill, Division 1 • Registered with the National Board • 472 liquid level outage valve orifice reduces refueling emissions • Vacuum pre -purged to save time, money and product 'Applicable federal, state, or local 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 tvrPA industry regulations- Cathodic protection is required and coating must be continuous and uninterrupted and must comply will, an local, state or national code. I wvvw.TrinityCorTtainei-s.com Call Toll Free: 888-558-8265 I . TRINITY* Containing Our World's Energy- H eneral Specifications Conforms to the latest edition of the ASME code for Pressure Vessels, Section VIII, Division 1. Complies with NFPA 58. Rated at 250 psig from -20' F. to 125" F. All tanks may be evacuated to a full (14.7 psi) vacuum. Vessel Finish: Coated with epoxy red powder. ( Tanks coated with the epoxy powder must be buried), For Abpveground use, tanks maj be coated with TGIC powder. Applicable federal, state or local regulations may contain specific requirements for protective coatings and cathodic protection. The purchaser and installer are responsible for compliance with all federal, state or local regulations. G FLOAT GAUGE SERVICE' MULTIVALV VALVE FITTINGS LAYOUT UNDER DOME All vessels dimensions aH�uci Vt55EL DIMENSIONAL INFORMATION rea proximate WATER OUTSIDE HEAD OVERALL OVERALL LEG LEG CAPACITY DIAMETER TYPE LENGTH HEIGHT WIDTH SPACING WEIGHT 454.2 L 24" 609.E mm Ellip 5' - 5 13/16" 3' - 0" 10 1/8" 31. 0" 245 Ibs, w9• 31,5" 1671.3mm 911.4 mm 257.2 mm 914.4 mm 111.1 kg, 946 800.1 mm Hemi 7' - 2 1/2" 3' - 7 112" 12 3/4" 3' - 6" 472 Ibs. 320 w g 31.5" 2197.1 mm 1104.9 mm 323.9 mm 1066.8 mm 214.1 kg. . 1211.2 L 800.1 mm Heml 8' - 71 3/4" 3' - 7 1/2" 12 3/4" 4' - 0 114" 566 Ibs. 500 wg, 37.42" 2736.9 mm 1104.9 mm 323.9 mm 1225.6 mm 266.7 kg. 1892.5 L 950.5 mm Hemi 9' -10.1 mm 2- 4 -1 7/16 15 5' - 0" 871 Ibs, wg, 40.96" Hemi in 1255,7 mm 381.0 mm 1524.0 mm 395.1 kg 3785 3785,0 L 1040.4 mm 15' -10 13/16" 4646.E 4' - 4 5/16" I mm 1344,E mm 412.8 mm 2743.2 mm 784.3 kg NAME PLATE QUANTITY FULL PER LOAD STACI 96 12 63 9 45 9 30 6 15 5 Rev: Jan. 27.2016 Why Tanks Corrode Underground steel tanks corrode due to an electrochemical reaction between the tank and the surrounding soil. The process of corrosion occurs due to small voltage differences on the steel surface that result In the flow of DC current from one location to another. Where current flows from the Pnk into the soil corrosion occurs. This location is called the anode Ina corrosion circuit. Where currentflowsfrom the soil tothe tank, no corrosion occurs. The progress of corrosion is determined by the amount of current flowing between the anode and the cathode and whether the Iodations of the anode/cathode remain constant overtime. Corrosion rate$$ are generally higher In wet soil environments since the conductivity ofhe soil promotes the flow of DC current in the corrosion circuit. i Corrosion generally exhibits itself on underground tanks in either a general overall rusting or more commonly, a pitting attack. Pit locations may result from metallurgical conditions of the steel sumface or soil variations such as rocks, sats, fertilizer, moisture concentration, oxygen concentration, etc. Preventing Corrosion Protecting underground tanks from corrosion is easily achieved bythe use Of two commonly applied protection methods: extemal coating and cathodic protection. These two methods are complementary Y and should be used in conjunction with the other. An effective external protective coating Insulates the steel from the soil environment, thus pre entfng the flow of corrosion current from the anode to the cathode. An effective external coating can protectover99%ofthe tank surface area . However, no coating is perfect. Damage from construction or soil stresses create tiny defects, which may result in accelerated corrosion at the defect otection revents DC Cathodic currentr from an externalsource,forcing the defects tank to beeome cathode. Application of sufficient DC current to the tank will prevent any corrosion from occurring. The two general types of cathodic protection systems are sacdficial and impressed current. Sacrificial systems are used when the amount of current required for the protection is small; such as In underground propane tanks. Impressed current systems are more commonly used for large structures such as large diameter pipelines. Electrical isolation of the tank from metallic piping systems and electrical grounds is critical for the cathodic protection system's effectiveness. How Sacrificial cathodic Protection Works Sacrificial systems work by creating a galvanic connection between two different metals. The most common anode material is magnesium, which when coupled to steel results in DC current flow from the magnesium to the steel. The open circuit potential of steel is about -0.50 volts referenced to a copper sulfate electrode. The open circuit Potential of magnesium is about -1.55V to-1,80V. By connecting the two metals together, the difference of 1 to 1.25Vvolts results in current flow to the tank that overcomes the natural corrosion cells that exist on the tank. With this current available to the tank, no corrosion occurs. 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 AZ63) and High Potential. The H-1 alloy Is produced from recycled magnesium and has an open circuit potential of approximately— 1.ks55V. This alloy is well suited for protection of underground propane tn. The High Potential alloy is 99% pure magnesium having an open circuit potential UP to -1.8V. This alloy should be used for soil 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' of #12 TIN Insulated wire is attached to the anodes. Anodes are than backFilled in a mixture of gypsum, bentonite, and sodium sulfate to lower the electrical resistance of the anode to soil. The mixture is a low cost, nonhazardous, electrically conductive backfill. The anode and backfill is then packaged in a cotton bag and either a cardboard box or paper bag. Actual shipping weight of these anodes with backfill is 27 lb. and 45lb. Application Recommendations Magnesium anodes can Protect underground tanks in most soil conditions. TheH-1 alloy is generally very effective. The following chart provides size and nks based on conservative designiassumptions. This chart covers olrecommendations forvarlous size conditions up to 10,000 ohm -centimeter resistivity. Resistivities higher than 10,000 ohm -centimeter generally represent very dry soils. Verification of soil resistivity can be performed through soil analysis contact us for design recommendations in locations Where soil resistivities exceed 10,000 ohm -cm, or if there Is no effective external coating on the tank. The propane service line from the tank to the house also must be considered in the cathodic protection design, unless the service line is plastic, All underground steel pipe should be externally coated with a corrosion resistant material. The service line should be electrically IsolIs less tat the h n50 hn length, the tank anodes wl illl provide sufficie ticurr pipe to protect both tank and pipe. For longer lengths of pipe, an additional anode may be required atthe house connections, If another metallic material such as copper is used for service piping, the pipe should be electrically Isolated from the tank at the fill pipe connection. Copper and steel create a galvanic couple thatwillaccelerate corrosion of the steel tank when directly connected to copper piping. Generally, copper piping does not require cathodic protection. Mecha _ 'I Connection 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: Insert the blacktest lead into the Common jack on the meter, and connect the opposite and of the lead to a charged reference electrode (% cell). STEP 3: Remove protective cap from the porous plug at bottom end of electrode. Place porous plug end into native soil (remove grass if necessary) atfour locations around hetank (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 Yz 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 UnscrewSTEP 1: porous saletof new reference odeAdd delonized or distilled water to the copper sulfate ill turn blue in coloraand here Shoelectrode uld always completely. xcess crystals aon tJthe bottom of the tube. DO NOT USE TAP WATER. STEP 2: 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 t substances that may con o contact oil, road sells, or other taminafe the solution by absorption through porous plug. Do not a110W electrode to freeze. Tank ytR_ i ,ravel, Rocky Areas UpO hm' 5000 is 10000 chm-cm e Size pry. Alloy i 9# 1 H-1 KAMi Piao�ai raa�ausx 9# 9# 1 H-1 2 H-1 9# 2 H-1 9# 2 H-1 9# 4 H-1 9# 1 4 1 H-1 'Based on 90% effective external coating, IPA, 4nM. If 2 ma/ft2 current density, and 30- Anode Installation 1. Determine size and quantity of anodes from application chart. 2. When a Single anode is Installed, it should be located near the tank center on either side of tank. 3. When m�ltiple anodes are Installed, space them evenly around the tank. See examples below. 1 anode 2 anodes 4 anodes 4.Anodes are shipped in either cardboard boxes or multi -wall papersacks. Remove outer container and bury the cloth bagged anode. if anode is supplied in plastic bag, remove plastic bag before installing. 5. Install anodes approximately two to three feet from the tank and at least as deep as the center line of the tank. Anodes work best In locations with permanent moisture, so generally the deeper the better. 1, 6.After placing the anode, stretch out the anode connection wire and extend aver to a connection point on the tank fill pipe. 7. Cover the anode with approximately six inches of backfili and pour 5 gallons of water on the anode to saturate the prepared backfill. B.Connect heteanode r Is cwire ntotothe itank vate thwith aelow electrical resistance 'connection. es are threaded stud n the tank fill pipe or any accessible metallic connection po nt to he tank. All connections should be coated with a moisture -proof material. 9.Ideally, the tank connection is made in the area of the tank fill Pipe within the covered dome. With access to the anode wire, subsequent I testing of the tank can include measurement of anode output and veriflcauon of performance. 10.Verify performance of the anode using an appropriate test procedure. ideal for use as a Bret siege regulator on any domestto alga ABME or DOT container In propane gas Installations requiring up to 1,500,000 BTU's per hour. Tha regulator Is factory set to reduce container pressure to an Intermediate pressure of approximately 10 PSIS. 20 PSIG higher [he lha regulator segfng end dative 4'' "��u,°uu in Iheyshigg, ry pmeeure 2g°/, lower than the regulator ate first stage reguiatlon I— n hyc a MUM ors to to P I , Alsc used to r :es or boilers, Also Incorporated In mt 9eafoe ration tank systems, Reduce tank pressure r high pressure bumers for applications like cylinder Installations. ••- MWahzaMnuummedwhMeeeaanlietepreeeure20, erinnorpomleytegre7le with NFPApamphlel Rede anprsure MAIM] mvetellhreliafVelva orae6p-e1m0te rellervaNe ehauld6e epeeHledin eaWrdsnea Pala hlgharthen the reguletoreeHing and delNe , _ ry pregsvm 70h lowerlhan the selling, Ideal a reduce fuse stage pressure of s to 2a P8I0 down to burner pressure, normally 11"w,o. ,deal ermedlum commercial Inetellatlans, multiple cylinder Install burner and normal domestic loads, �rra9er�eg ianlforeenettfi®n The LV94093R Bec g burner rasa k MGIrnt Regulator la designed to reduce fuse P ure ❑armall 1t wo. Deslgned as a aeoontl stage raga requirements up to gy0,00o BTUihr. and are as of far homes, mobllr Dirderi98o {I7Etfaene.,�_.. Maximum flow based an to p510 Inleand a° t w,c, d--Fery Fete i� Inlet pressure. udge pressure of 5•10 p9IG down to latorior Smaller applications with flow homes, and cottages. y,P