HomeMy WebLinkAboutPRODUCT APPROVALABOVEGROUND/UNDERGROUND DOMESTIC TANKS
8" dome in black plastic or white
galvanized steel
is
120 - 2,000 wg
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NEW!
POWDURAO OneCureTm Super Durable Topcoat
with Zinc Rich Primer on Aboveground
POWDURA91 OneCure"" Two coat system properties include:
• Zinc rich -epoxy primer
• Super durable TGIC polyester topcoat
• Superior corrosion and edge protectiori
• Patent pending formulated primer and topcoat
• 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 Vill, 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, or local regulations may contain specific requirements for
L' ®N TA 1 N E R S
protective coatings and cathodic protection. The purchaser and installer are responsible
• . . , for compliance with all federal, state, local and NFPA industry re-guiations. cathodic
protection is required and coating must be continuous and uninterrupted and must
comply with an local, state or national code.
www.TrinityContainers.com Call Toll Free: 888-558-8265
A;9fi&' TRINITY*
Containing OurWorld's Energy'
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1 General Specifications
Conforms to the latest edition of the ASME code for
Pressure Vessels, Section All, Division 1. Complies with
NFP,,, 58.
Rate at 250 psig from -20' F. to 125' F. All tanks may be
evacuated ated to a full (14.7 psi) vacuum.
Vessel Finish: Coated with epoxy red powder. ( Tanks coated
with t e epoxy powder must be buried). For Aboveground use,
tanks
may be coated with TGIC powder.
Appli� able federal, state or local regulations may contain
spec' is requirements for protective coatings and cathodic
prote�; tion. The purchaser and installer are responsible for
comp lance with all federal, state or local regulations.
^%IC15AI 1 I nkf^+ U
- - WITHDRAWAL
VALVE
FLOAT ' OTICE` �.
GAUGE LPANODE
ANODE
. x CONNECTION
' FILLER
I -VALVE
f p
1 ,
SERVICE / � NAME
MULTIVALVE PLATE
RELIEF
VALVE
FITTINGS LAYOUT UNDER DOME
All vesj'
AGUG VESSEL DIMENSIONAL INFORMATION
Is dimensions are ap roximate
WATIR
OUTSIDE
HEAD
OVERALL
OVERALL
LEG
LEG
WEIGHT
QUANTITY
CAPAIICITY
DIAMETER
TYPE
LENGTH
HEIGHT
WIDTH
SPACING
FULL
PER
120 �1 g,
2411
Ellip
5'
LOAD
STACK
- 5 13116"
3' - 01'
10 1/8"
3' - 0"
245 Ibs.
96
12
454.2 L
1 609.6 mm
1671.3mm
911.4 mm
257.2 mm
914.4 mm
111.1 kg.
250 g.
315'
Hemi
7' - 2 1/211
3' - 7 1/211
12 3/4"
3' - 6"
472 Ibs.
63
9
946. L
800.1 mm
2197.1 mm
1104.9 mm
323.9 mm
1066.8 mm
214.1 kg.
320 I g.
1211 �g L
31.5"
800.1
Hemi
8' -11 3/411
3' - 7 1/2"
12 3/4"
4' - 0 1/4"
588 Ibs.
45
9
mm
2736.9 mm
1104.9 mm
323.9 mm
1225.6 mm
266.7 kg.
500 v"g.
37.42"
Hemi
9' -1011
4' -1 7/1611
1511
5' - 0"
871 Ibs.
30
6
1892.5 L
950.5 mm
2997.2 mm
1255,7 mm
381.0 mm
1524.0 mm
395.1 kg
100Ag.
3785.
40.96"
Hemi
15' -10 13116"
4' - 4 5/16"
16 1/4"
9' - 0"
17291bs.
15
5
lip
1040.4 mm
4846.6 mm
1344.6 mm
412.8 mm
2743.2 mm
784.3 kg
Rev: Jan. 27, 2016
- O
CATHODIC"O
Wh Tan s
y Corrode
Undergrt, nd steel tanks corrode due to an electrochemical reaction
between a tank and the surrounding soil. The process of corrosion
occurs du to small voltage differences on the steel surface that result
In the flo of DC current from one location to another. Where current
flows from the tank into the $oil corrosion occurs. This location is called
the anode) a corrosion circuit. Where currentflows from the soil to the
tank, no c rros(on occurs. The progress of corrosion Is determined by
the amour of current flowing between the anode and the cathode and
whetherthe locations of the anode/cathode remain constant overtime.
Corrosion P" tes are generally higher in wet soil environments since the
conductivlg' of the soil promotes the flow of DC current In the corrosion
circuit, 0
Corrosion generally exhibits itself on underground tanks in either a
general overall rusting or mare commonly, a pitting attack. Pit locations
May result "I am metallurgical conditions of the steel suraface or sail
variations suFh as etc.
rocks, salts, fertilizer, moisture concentration, oxygen
concentration, etc
Preventing Corrosion
' r Protecting underground
tanks from corrosion is
easily achieved bythe use
Of two commonly applied
Protection methods:
external coating and
cathodic
These two methods
methods
are complementary
and should be used in
conjunction with the
other. An effective
external otective
ating insulates the steel from the soil environment, thus pr enting
I flow of corros ion current from the anode to the cathode. An effective
:ernalcaating�priprotect over 99%ofthe tank surface area. However,
coating is perfect Damage from construction or soil stresses create
f defects, whiich may result in accelerated corrosion at the defect.
Ll,UulU proiect►on prevents corrosion at those defects by applying
current from♦ an external source, forcing the tank to become
hode• Application of sufficient DC current to the tank will prevent any
roslon from Ocurring. The two general types of cathodic protection
tems are sacrIount
icial and Impressed current. Sacrificial systems are
d when the a of current required for the protection Is small,
h as in underround propane tanks. Impressed current systems
more commonly used for large structures such as large diameter
dines. Electrical isolation of the tank from metallic piping systems
electrical grounds is critical for the cathodic protection system's
,,tiveness. 11
Sacrificial Ca�hodlc Protection Works
f(clal systems 4work 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-1.55V. 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 10,000
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 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 forvarious size tanks based
on conservative design assumptions. This chart covers soil conditions
UP to 10,000 ohm -centimeter resistivity. Resistivitles 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 an 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. I 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.
soil
i
ype
`y�f=erti�e,$oils;�Glay,-•
Sand, r " 1'I, Rocky
Areas
Tangy
9 u
Cap
i.)
to�`50QO�dm
cinc '+
5000 to 1 OD00 ohm -cm
r :,
1: .: _
1z1=111
r
L
;,:�
G.
Y
io
'IUM,�k
Slze
Qty.
Alloy
190
K
9#
1
H-1
9#
1
H-1
d'
b
t�',f„7`1'1-•J
9#
2
H-1
(.,pis..
9#
2
H-1
500
';;.?r
?s 1Ft= l 4'!
9#
2
H-1
10d0
-a4.1
<^2='z'
9#
4
H-1
1500
" �1�#_�N�`
�h'S�f�'"�N`�
_:
,9#
4
H-1
2000
<u7#j?73r;x!y?t
9# 1
6
H-1
''Based on 9d �b e#ective external coating, 2 ma&2 current density, and 3o-
yearAnode life.
Anode Installation
1. Determinne size and quantity of anodes from application chart.
2. When allsingle anode is Installed, it should be located near the
tank cer%ter on either side of tank.
3. When m Itiple 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
paper sac, ks. Remove outer container and bury the cloth bagged
anode. If��anode is supplied in plastic bag, remove plastic bag
before in tailing.
5. Install an" des approximately two to three feet from the tank and
at least as deep as the center line of the tank. Anodes work best
in locatio s with permanent moisture, so generally the deeper
the better.
6.After plad�iing 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 gal ons of water on the anode to saturate the prepared
backfill. e ater is necessary to activate the anode.
8. Connect t e anode wire to the tank with a low electrical
resistancel' connection. Examples are threaded stud on the
tank fill pi le or any accessible metallic connection point to the
tank. All or
should be coated with a moisture -proof
material. 1I
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,
subsequentesting of the tank can include measurement of
anode outp,, t and verification of performance.
O.Verify performance of the anode using an appropriate test
procedure.11
Mechanica!,r, jrtnection 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 end of the lead to a charged reference
electrode (1/2 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 1/2 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 delonized or distilled water to the copper sulfate
crystals, filling electrode completely. The solutionmill 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 and 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 salts, or other
substances that may contaminate the solution by absorption
through porous plug. Do not allow electrode to freeze.
Ustributed By:
for use as a first stake regulator on any domestic size ASME or DOT container In propane gas
ations requiring up 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.
lering 0Iformation
--'/<FNPT I '/s' F.NPTI 7/32" I uver uunei
1,500,000LV30310 PSIG 9,00
Maximum flow basedl on Inlet pressure 20 FSIG higher then the regulator setting and dellvery pressure 20% lower than the regulator
siting and delivery pressure 20% lower than the setting.
accurate first stage regulation In two -stage bulk tank systems. Reduce tank pressure to an
ate pressure of 5 to 10 PSIG. Also used to supply high pressure burners for applications like
furnaces or bollere. Also Incorporated In multiple cylinder installations.
'Qng Bnf®n'tPirnat9®n
W F. NPT
'/" F. NPT
,VV
F. POL
Yes 1 2,600,000
TR96 I W FNPT I f-----f-------� LV4403TR96 10 5 1 n
When used for flnel stage pressure control, must either incorporate integral relief valve or separele relief valve
wilt} NFPA Pamphlet $8. should be epeciHed In accordance
" Me imum How based on inlet pressure20 PSIG higherthan the regulalorsetting and deliverypressure 20% lower than the setting.
1 to reduce first stage pressure of 5 to 20 PSIG down to burner pressure, normally 11" w.c.
medium commercial installations, multiple cylinder installations and normal domestic loads,
Ing Information
.„
tv44,03e45 1/a" R NPT
LV4403134811" #28
Lv4463ess 3/" F. NPT Drill
LV4403866R' Y4" F. NPT
"aackr9ount design
Mexlmum flow based an 10 PSIG Inlet and V w.c. delivery pressure.
11" W.C.
at 10 9" to Over Inlet 935,000
PSIGIG W.C.
Inlet
The If 403BR Back Mount Regulator Is designed to reduce first stage pressure of 5-10 PSIG down to
burner pressure normally 11" w.c. Designed as a second stage regulator for smaller applications with flow
requi laments up to 450,000 BTU/hr. and are ideal for homes, mobile homes, and cottages.
®lyd1brr71tnag information
W RNPT vi t rvr t „ 11" w.c. At 10 9" to 13"
LV3403a46R °/a" F NPT /32 PSIG Inlet W.C. I Over Inlet
*Maxi um flow based on 10 PSIG inlet and 9" w.c. delivery pressure.
I(
460,000
U�,
1.13,00
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