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Home My WebLink AboutPRODUCT APPROVALn ., Ef t, ' j N'D UN ER Rrt,,UUNDDC 4 1PR COUNCIL Ranked #1 by PERC In ovarall pedarmance ranking for Proteettvo Coatings applied on Underground Propane Tanks SCA VMNE EB U IP, ft"" v TRINITY 1111121,1111 mo,�i Containing Our World's Energy'" t TRINITY" �- Containing Our Wodd's Energy- W w x � OUTSIDE DIAMETER o LEG General Specifications Con f 'rms to the latest edition of the ASME code for Pres 'ure Vessels, Section Vill, Division 1. Complies with NFP 58. Ratec at 250 psig from -20' F. to 125' F. All tanks may be evacuated to a full (14.7 psi) vacuum. Vess I�1 Finish: Coated with epoxy red powder. ( Tanks coated with t e epoxy powder must be buried), For Aboveground use, tanks i ay be coated with TGIC powder. Apple 'able federal, state or local regulations may contain spec) ca requirements for protective coatings and cathodic protec ion. The purchaser and installer are responsible for ;omi pl a1 nce with all federal, state or local regulations. - _ WITHDRAWAL FLOAT ,'/ oncEVALVE GAUGE �P' ANODE CONNECTION FILLER (� ® ' FILLER I O O�-VALVE SERVICE / ' MULTIVALVE PLATE RELIEF VALVE FITTINGS LAYOUT UNDER DOME All �I AGUG VESSEL DIMENSIONAL INFORMATION vessels dimensions are approximate WATE i R OUTSIDE HEAD OVERALL OVERALL LEG LEG WEIGHT CAPAC ITY i DIAMETER TYPE LENGTH HEIGHT WIDTH SPACING 120 w' 454.2 . L 24" Ellip 5' - 5 13/16" 3' - 0" 10 1/8" 3' - 0" 245 lbs. 250 609.6 mm 1671.3mm 911.4 mm 257.2 mm 914.4 mm 111.1 kg. Wi 946.3 31.5" Hem! T - 2 1 /2" T - 7 1 /2" 12 3/4" 3' - 6" 472 lbs. 320 800.1 mm 2197.1 mm 1104.9 mm 323.9 mm 1066.8 mm 214.1 kg. wc 1211.2 L 31.5" 800.1 mm Hemi 8' -11 3/4" T - 7 1/2" 12 3/4 4 - 0 1/4 588 lbs. 500 2736.9 mm 1104.9 mm 323.9 mm 1225.E mm 266.7 kg. kc 37.42" Hem! 9'- 10" 4' -1 7/16" 15" 5' - 0" 871 lbs. 1892.5 L 950.5 mm 2997.2 mm 1255.7 mm 381.0 mm 1524.0 mm 395.1 kg 1000 w 3785.0 . 40.96" Hemi 15' -10 13/16" 4' - 4 5/16" 16 1/4" 9' - 0" 1729 lbs. .I 1040A mm 4846.6 mm 1344.6 mm 1 412.8 mm 2743.2 mm 784.3 ka QUANTITY FULL PER LOAD STACK 96 12 63 9 45 9 30 6 15 5 Rev: Jan. 27, 2016 Why Tanis Corrode Underground steel tanks corrode due to an electrochemical reaction between a tank and the surrounding soil. The process of corrosion occurs d '' to small voltage differences on the steel surface that result in the flot of DC current from one location to another. Where current flows fron the tank into the soil corrosion occurs. This location is called the anode : n a corrosion circuit Where current flows from the soil to the tank, no ct rrosion occurs. The progress of corrosion is determined by the amou of current flowing between the anode and the cathode and whetherth 1 locations of the anode/cathode remain constant overtime. Corrosion ates are generally higher in wet soil environments since the conductivi '� of the soil promotes the flow of DC current in the corrosion circuit. Corrosion enerally exhibits itself on underground tanks in either a general ova 'all rusting or more commonly, a pitting attack. Pit locations may result rom metallurgical conditions of the steel suraface or soil variations s ch as rocks, salts, fertilizer, moisture concentration, oxygen concentration, etc. } f�� Preventing Corrosion Protecting underground tanks from corrosion is easilyachieved by the use Of two commonly applied x Kxiz. protection methods: external coating and cathodic protection. These two methods are complementaryF -s and should be used in conjunction with the other. An effective ating inSula Is the steel from external the soil environment, thus preventing e e flow of corr sion current from the anode to the cathode. An effective ernal coatin can protect over 99% of the tank surface area. However, coating idefects, ws p '�fect Damage from construction or soil stresses create filch may result in accelerated corrosion at the defect. L11UUJt; pule n prevents orrosion at those defects ule cure tr fro n an external csource, forcing the tank to become hode. APPIIci tion of sufficient DC current to the tank will prevent any rosion from Iccurring. The two general types of cathodic protection tems are sac �fffciai and impressed current. Sacrificial systems are d when the mount of current required for the protection is small, h as in underground propane tanks. Impressed current systems more Comm ,nly used for large structures such as large diameter dines. Electrical isolation of the tank from metallic piping systems electrical gr urids is critical for the cathodic protection system's Itivenesc_ 1 Sacrificial dathodic Protection Works ficial system 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 1.25V volts 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—1.55V. This alloy is well suited for protection of underground propane tanks. 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 10,0o0 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 TW insulated wire is attached to the anodes. Anodes are then 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 45 lb. Application Recommendations Magnesium anodes can protect underground tanks in most soil conditions. The H-1 alloy is generally very effective, The following chart Provides size and quantity recommendations for various size tanks based on conservative design assumptions. This chart covers soil 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 1 Q000 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 isolated at the house with an insulating fitting or union. If service pipe is less than 50' in length, the tank anodes will provide sufficient current to protect both tank and pipe. For longer lengths of pipe, an additional anode may be required at the 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 that will accelerate corrosion of the steel tank when directly connected to copper piping. Generally, copper piping does not require cathodic protection. oil Typeballs, Clay, is Sr an;ravel, Roelry -dy'Coam , Areas ank Cap �5 to 5000;ojtm cm� 4 5000 to 10000 ohm -cm S�e� Qty Alidy Size Qty. Alloy 120 9# 1150 9#M _ 1" H 1 n 1 H-1 1 250 �`9, ,' s 1_>a H-1 2 H-1 325 9# 1 r H ,7 : 9# 2 H-1 �500 17,�,1 Ali 1 9# 2 H-1 1000 17 2 H 1-, 1500 1,7 r s. 3 9# 4 H-1 4 H-1 9# 6 H-1 Based on 90% effective external coating, 2 ma/1t2 current density, and 30- yearAnod Illife. Anode In tallailon 1. Deter"nine size and quantity of anodes from application chart. 2. When la single anode is installed, it should be located near the tank enter an either side of tank. 3. When multiple anodes are installed, space them evenly around the to 'k. See examples below. 'i 7 an ode 2 anodes ' 4 anodes CD CO� - 4.Anodes, are shipped in either cardboard boxes or multi -wall papers, icks. Remove outer container and bury the cloth, anode. f anode is supplied in plastic bag, rebagged move plastic bag before i ;stalling. 5. Install anodes approximately two to three feet from the tank and at least c, 's deep as the center line of the tank. Anodes work best in locatli 6s with permanent moisture, so generally the deeper the bette '. 6. After plai ing the anode, stretch out the anode connection wire and exte �d over to a connection point on the tank fill pipe. 7. Cover thf anode with approximately six inches of backfill and pour 5 g Icons of water on the anode to saturate the prepared backfili. I Vater is necessary to activate the anode. 8. Connect he anode wire to the tank with a low electrical resistant ,i connection. Examples are threaded stud on the tank fill pi a or any accessible metallic connection point to the tank. All onnections should be coated with a moisture -proof material. 9.Ideally, thi tank connection is made in the area of the tank fill Pipe Withir the covered dome. With access to the anode wire, subsequent testing of the tank can include measurement of anode output and verification of performance. O.Verify perf" rmance of the anode using an appropriate test procedure. Mecha,._ _ it 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/Co Sulphate Half -Cell) pper 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, preferabiy to the fill pipe multivalve. A good solid connection is very important. (DO NOT connect to shroud). STEP 2: Insert the black test lead into the Common jack an the meter, and connect the opposite end of the lead to a charged reference electrode (z 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) 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 end 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. 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 to contact oilsalts, or other , road s substances that may contaminate the solutions absorption through porous plug. Do not allow electrode to freeze_ C for use as a first stage regulator on any domestic size ASME or container in propane gas installations requiring up to 1,500,000g`'"o s per hour: The regulator is factory set to reduce container U� ;ure to an intermediate pressure of approximately 10 PSIG. Neiring Information Part Number �Connectio� { i Inlet. I' h Outlet Congectioh ..Factory ! Orifice t:Stze ^ Delivery �' Pr'essure 'Bonnet Vent Posdion Vapor Capacity 4 IBTUIhr Propane* t _—��_�.�_ _ • 11 111 E� • 11 13TR Maximum flow based on inlet pressure 20 PSIG higher than the regulator setting and delivery pressure 20% lower than the regulator setting and delivery pressure 20% lower than the setting. ies accurate first stage regulation in two -stage bulk tank • B ckmount design M iximum flow based on 10 PSIG inlet and 9" w.c. delivery pressure. LV4403B Series 100 Rego Dr. P.O. Box 247 Elon, NC 27244 USA www.regoproducts.com Phone (336) 449-7707 Fax (336) 449-6594 Maximum Capacity of PE Pipe in Thousands of BTU per Hour of Liquefied Petroleum Gas with p Gab Pressure of 11.0 in. WC and a Pressure Drop of 0,61n. WC _ wo"Cl an a 1,52 speC490 81oft gas) 1073 720 571 484 426 883 325 286 257 235 218 204 192 169 152 1391 934 740 627 661 497 421 370 833 305 283 264 249 219 197 1983 1331 1064 893 786 706 600 628 476 436 403 376 364 311 2880 3663 2391 1894 ' 1605 1412 1272 1078 948 864 781 723 676 686 560 504 4724 3247 2608 2232 1978 1792 1534 :1359 1232 1133 1064 989 934 828 750 10063 6755 8351 4636 3989 3892 3044 2678 2411 2207 2044 1910 1797 1661 1424 129 113 102 86 76 68 63 68 • 54 51 48 46 44 42 40. 167 147 132 112 99 89 81 : 75 70 66 63 60 57 64 52 238 427 209 188 160 140 126 116 107 100 94 89 85 81 78 75 642 376 669 838 287 262 227 208 192 180 169 160 816 441 391 364 326 203 286 269 285 152 244 146 233 140 224 134 216 1207 1061 966 810 712 642 687 544 BOB 478 453 431 411 394 379 251691U Maximum Capacity of PE Pipe In Thousands of BTU per Hour of Liquefied Petroleum Gas =1C11, with a Gas Pressure of 2,0 psi and a Pressure prop of 1.0 psi _ (based an a 1,82 epaolAc aravity S3081 11300 7686 600B W92 4479 4033 3418 '3007 2707 2478 2296 2144 2016 1775 1899 14652 20877 9W5 14014 7790 11100 6602 9408 6807 8276 6229 7451 4432 3898 3510 3213 2976 2780 2617 2302 2073 37614 25183 19946 16905 14869 13389 6316 11348 6556 :9982 6002 8988 4578 8226 4289 7618 3962 7119 3729 3280 2953 43429 10596 29848 1 23969 '56339 20515 18182 16474 14100 02496 11322 10417 9691 9092 6700 8689 5.894 7612 8307 6897 47780 42000 376M 32054 128194 26388 23234 21517 20106 18926 1664A 14990 7366 1787 1192 1545 1078 910 800 720 659 ; 611 671 637 608 484 462 448 425 2803 2202 1391 1179 1037 934 855 792 740 696 1983 1680 1478 1331 1218 1054 659 627 699 674 551 4498 5908 3956 6232 111128 992 3663 3019 2666 2891 2189 2027 1694 1783 4749 4057 :2788 939 1688 893 .1605 883 1633 8i8 1469 786 1412 12705 11176 3696 3268 2997 2616 2477 10063 8529 76M 6755 6182 •5728 8360 2347 2239 2144 2060 1985 6036 4767 4636 4337 4150 3988 Maximum Capaoily of PE Pipe in Thousands.ot BTU per Hour of Licluefted Petroleum 2616BTU Gas =1 C1:H with a Gas Pressure of 10.0 psi and a Pressure drop of 1.0 psi (based an a 1.52 madfle aravliv am% 14284 18455 9855 12388' 7568 9812 6414 8316 6642 6080 '„ 4306 Vv7 1787 ara 3410 09a 3121 b03 2890 470 2701 442 2842 889 2236 350 2014 26296 17652 13981 11849 7315 10423 6557 9395 66B3 7984 4910 •6997 4422 6300 4047 3747 3502 3296 2894 2611 47262 31720 26123 21293 18729 16865 14294 12572 11321 8766 10361 5340 9696 4990 8967 4697 8440 4131 3720 63960 138476 37087 89601 29782 70967 26489 60148 22691 62906 20469 47640 17519 15527 14068 12943 12041 11297 10671 7423 9468 6686 8669 40876 86514 31980 29267 27104 28329 23840 209701 18882 1707 2213 i501 1352 1146 100E 907 830 '769 719 676 640 609 582 557 I 93 636 3183 1946 2778 1763 2497 1485 2116 1306 1862 1176 1676 1077 1634 997 1421 932 1328 877 830 790 754 723 695 5665 7384 4983 4487 38M 3846 3012 2767 2553 2386 1250 2246 1183 2126 1126 2022 1075 1931 1030 1851j 990 1779 16004 66M 14077 sago 12676 604i 10743 4468 9449 4048 8609 3724 7787 3465 .7212 3261 3071 2916 2782 2664 2664 25b0: 2660; 2466 2466 6739 6343 boos 5712 8024 Ph: 1.8�10.662.0206 o Fax: 616.325.9407 o Web: www gasltis,00m _ -- ,l —... 7