HomeMy WebLinkAboutAPPROVED PRODUCT DOMESTIC TANKS!1i'/1�7ti■iItr• � ��—'v.��...�r�.az..,=•__ �^,_,a _--_ '� _ ..� _ ._ .y_. _ '��-.��._..._..
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- Dual service options for above or underground applications
- Option 411: Ready -to -bury red oxide durable powder coating with black
- polyethylene AGUG dome"
yrz - Option #2: Aboveground option with steel 8" AGUG dome
- All valves and float gauges are centered under dome
- Fabricated to the latestA.S.M.E. Code, Section Vill, Division 1
- Registered with the National Board
_ - #172 liquid -level outage valve orifice reduces refueling emissions
- Vacuum prc-purged'to save time, money and product
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'Applicable federal, state, or local regulations may contain specific requirements ror
protective coatings and cathodic protection. The purchaserand installer are responsible
for compliance with all federal, state, local and NFPA industry regulations. Cathodic
protection is; required and coating must be continuous and uninterrupted and must
comply with an local, state or national code.
www.TiinityContainers,com Call Toll Free: 888-558-8265
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OeN{.;"" ,s our Wands Energy+
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General Speciflcaflons
Conforms to the latest edition of the ASME code for
Pressure Vessels, Section Ville Division 1. Complies with
NFPA 58.
Rated at 250 prig from .200 F. to 125" F. All tanks may be
evacuated to a full (14.7 psl) vacuum.
Vessel Finish: Coated with epoxy red powder, ( Tanks coated
with the epoxy powder must be buried). For Aboveground use,
tanks may 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,
- - WITHDRAWAL
SLOAT GE . �P. rAs
�0710E VALVE
ANODE
� CONNECTION
/'u ® 1 VALV
o E
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MULRIVICE / --y� ,
ALVE NAME
- PLATE
RELIEF
VALVE
FITTINGS LAYOUT UNDER DOME
proAG eG VESSEL DIMENSIONAL INFORMATION
All vessels dimensions area
WATER OUTSIDE HEAD OVERALL OVERALL
CAPACITY DIAMETER TYPE LENGTH LEG LEG - —"
HEIGHT WIDTH WEIGHT QUANTITY
120 wg. 24" SPACING � FULL PER
454.2 L 609.6 mm Elhp 5' - 5 13/16" 3' - 0° 10 1/8" 3' _ 0„ LOAD STAC
1671.3mm 911.4 mm 257245 lbs. 98 12
250 wg. 31.5" Heml 7' - 2 1/2" , _,2 mm 914.4 mm 111,1 kg,
946,3 L 800.1 mm 3 7 1/2�� 12 314"
2197,1 mm 1104.9 mm 323.9 mm 1066.8 mm 2141 kg, 63 9
320 wg, 31.5" Neml $' -11 3/4" 3'- 7 1/2" 12 3/4"
1211.2 L 800.1 mm 2736.9 mm 1104,9 mm 4' � 0 1/4" 588 lbs. 45 323.9 mm 1225,6 mm 9
500 wg. 37.42" Hemi 9t. 10" 266,7 kg,
1892.5 L 950.5 mm 4' -1 7/16" 15" 5, - 0„
871 2997.2 mm 1255.7 mm ( 381.0 mm 1524.0 mm 395.1bk s. 30 .6
3785 0 Lg. 40.96" Hem! 15' -10 13/16" 4' . 4 6/16"g
3785,0 L 1040.4 mm 16 1/4" 91,011 1729�-
4846.6 mm 1344.E mm 412,8 mm 2743.2 mm 784.3 ka 15 5
Rev, Jan. 27, 2016
ry Tanks Corrode
lderground steel tanks corrode due to an electrochemical reaction
tween the tank and the surrounding soil. The process of corrosion
eurs due to small voltage differences on the steel surface that result
the flow of DC current from one location to another. Where current
ms from the tank into the soil corrosion occurs. This location is called
anode Ina corrosion circuit. Where current flows from the soil to the
k, no corrosion occurs. The progress of corrosion is determined by
amount of current flowing between the anode and the cathode and
zther the locations of the anode/ cathode remain constant overtime.
msion rates are generally higher in wet soil environments since the
ductivity of the soil promotes the flow of DC current in the corrosion
lilt
rsion generally exhibits itself on underground tanks in either a
'al overall rusting or more commonly, a pitting attack Pit locations
result from metallurgical conditions of the steel surface or soil
ions such as rocks, salts, fertilizer, moisture concentration, oxygen
rntration, etc.
Preventing corrosion
Protecting underground
:;<:, tanks from corrosion is
easily achieved by the use
Of two commonly applied
Ur, • .� protection methods:
external . coating and
cathodic
protection.
These two methods
are complementary
and should be used in
conjunction with the
other. An effective
external protective
co�ting insulates the steel from the soil environment, thus preventing
th4flow of corrosion current from the anode to the cathode. An effective
ex%rnalcoating can Protect over 99%oofthe tank surface area. However,
no lcoating is perfect. Damage from construction or soil stresses create
tinydefects, which may result in accelerated corrosion at the defect.
it
iodic protection prevents corrosion at those defects by applying
current from an external source, forcing the tank to become
lode. Application of sufficient DC current to the tank will prevent any
osion from occurring, The two general types of cathodic protection
ems are sacrificial and impressed current. Sacrificial systems are
i when the amount of current required for the protection Is small,
i as in underground propane tanks. Impressed current systems
pore commonly used for large structures such as large diameter
lines. Electrical isolation of the tank from metallic piping systems
electrical grounds Is critical for the cathodic protection system's
tl.,o.,e....
Sacrificial Cathodic Protection Works
frcial 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 1.25V 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 soll applications over 10,000
ohm -cm resistivity.
The two most common anode sizes used for underground propane
tanks are 9lb. 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 forvarlous 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 soli 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 extemally 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.
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Fedlle Soils Clap, ; �lnd, Gravel SandgLoam — , Rock,
Tank Cap.
;, 11•10,50' ah:
Areas
(gal.j
Size . Q{y; �
5000 to 10000 ohm -cm
120
; A110
9#;.. 1 y
Size Qty. Alloy
150
"H-1
1 ' H-1
9# 1 H-1
9#
250
325
' 9#-1
9#
1 H-1
9# 2 H-1
500
1 H-1
17#'. ' H1
9# 2 H.1
1000
17# , ":2 .. .FI�1
9# 2 H-1
9#
1500 17# 2 11
4 H-1
9#
2000
17# 3 ._1
4 H-1
9#
6 H 1
sea on 90% effective external coating, 2 m&V current density
rAnade Ilfe.
and 30.
'do Installation
Determine size and quantity of anodes from application chart.
When a single anode is installed, it should be located near the
tank center on either side of tank.
When multiple anodes are installed, space them
the tank. See examples below. evenly around
2 anodes 4 anodes
C- _
' ice. hl
inoaes are shipped in either cardboard boxes or
iapersacks. Remove outer container and burythe cloth bagged
multi -wall
node. If anode is supplied in plastic bag, remove Alasticgb
afore installing, a
'stall anodes approximately two to three feet from the tank and
least as deep as the center line of the tank. Anodes work best
locations with permanent moisture, so generally the deeper
e better.
ter placing the anode, stretch out the anode connection wire
d extend over to a connection point on the tank fill pipe.
ver the anode with approximately six inches of backfill and
jr 5 gallons of water on the anode to saturate the prepared
ldill. Water is necessary to activate the anode.
inect the anode wire to the tank with a low electrical
stance connection. Examples are threaded stud on the
fill pipe or any accessible metallic connection point to the
All connections should be coated with a moist
Trial.. Trial.
ly, the tank connection is made in the area of the tank fill
within the covered dome. With access to the anode wire,
3quent testing of the tank can include measurement of
output and verification of performance.
performance of the anode using an appropriate test
lure.
Mechanical Connection Under Dome
Cathodic Projection 'Pasting Procedure
Equipment Needed: Digital Voltmeter Red Test Lead Min. 12 Lon
8, Black Lead Min. 2' Long, Reference Electrode (Copper/CoAper
Sulphate Half -Cell) g
STEP 1: Using a digital voltmeter insert the red test lead into the V
Jack of the meter and select the 2 or 20 volt DC scale. Clip red to It
lead connector to an uncoated metallic area of the tank, preferably
to the fill pipe multivalve. A good solid connection is very importan
(DO NOT connect to shroud), t.
STEP 2: Insert the black test lead into the Common jack on the me
and connect the opposite end of the lead to a charged reference
electrode � ter,
STEP 3; (� cell)
protective cap from the porous ping 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
obtaining readin s )• If difficulty is encountered
the soil. g moisten soil with water or dig Yz cell deeper into
STEP 4: Record all four meter readings on an appropriate
least of all four readings should be a minimum of-0.850v or mor
negative. {Note: If any of the four readings are below(less negative)
form. The
-0.850v then the tank Is not fully protected), e
Charging Reference Electrode
STEP 1: Unscrew and remove porous Plug electrode. Add delonized or distilled Water to the eu w reference
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 poit on
and let stand for 1 hour before use. This will allow the porous plug
to become completely saturated before use.
Caution: Dv not al/ow electrode to contact oil, road sa/ts, or other
substances that y contaminate the solution by ahsorotlen
through porous lu Do not allow n_►am. — ,_ .
Ideal for use statie regulator on -
as a first an
Installations requiring up to 1,500,000 BTU's Y domestic size
pressure of approximately 10 PSIG. SME or DOT container in propane gas
Pressure to an Intermediate
per hour. The regulator is factory set to reduce container
'Ord ll"I g �69jf®9'Ai14faiFne+,.
LV3403TR f
LV3403TRVS 'y4" FNPT Y
a " '
FNPT '/s2" Over O Maximum now besedloilinlet Pressure 9 10 PSIG utlet
ailing and derive P re 20 PSIG higher than the regulator setting and dative 9.00 1.500,000
ry pressure 20 ; lowerthan the selflng,
very pressure 20% lower than the regulator
accurate first stage regulation in two-sta • r , , +
ate Pressure of 5 to 10 PSIG. 9e bulk tank systems. Reduce tank pressure to an
furnaces or boilers. Also tncorptora ed ntmult musuppltiple cyllg►n er tnstallations.pressure rs for a
Berg HnfoIrttlmatlo, PAlications like
[ LV4403SR4
J1104403TR4 +a" F NPT 5 -
I'ILV4403SR9 W F. NPT 10 1-5
ILV4403TR9 5-10
VY 5 1-5
tV4403SR96 F POL 10 Yes
I`V4403TR96 '/a" RNPT 5 5-5 2,500,00(
I 1-5
When used for Mal stage pressure conlrol, must ettherinco 10 5-10
t,lIvith NFPq pamphlet 68. Incorporate Integral relief valve or se arate relief valve should be s e
axlmum flow based on Inlet pressure 20 PSIG higher then the reguletorsettin and delivery
P d0ed in eccordem
9 ry Pressure toy, lower than the selling.
0 �
e ,
Inetl to reduce first stage pressure of 5 to 20 PSIG down to burner pressure no "
for medium commercial Installations, multiple cylinder installations loads.
842109 1nfv% M,tj®and normal domestic ads.Bil normally 11 ws.
Z„
LVA4031346 �° F NPT
LV,403846R"
LV44031366 %" NPT Drill F.
LV`1 031366R• 314" F NPT
.. aackmount design
Me ,mum flow based on 10 PSIG Inlet and 9" w e. delivery pressure.
11"wc.
at 10 9" to 13"
PSIG W. Over Inlet
Inlet 935,000
The-V3403BR Back Mount Regulator is designed to reduce first stage r e 9
burn r pressure normally 11" W.C.
c. Designed as a second stage regulator , o •,
req38fring
i ements up to 450,000 BTU/hr. and are ideal for homes, mobile homes, and ll of 5-10 PSIG down w
for smaller applications with flow fir onto rmattu®li�l cottages.
Lva4R3e46R W FNPT ���F�:.N
PT11"w.c. At 10 "
'/a"PT '�32� PSIG Inlet 9" to 13
`Maximum flow based on 10 PSIG Inlet and 9" W.C. Over Inlet 450,000
.� it w.c, delivery pressure.
p