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HomeMy WebLinkAboutPRODUCT APPROVALABOVEGROUNLbNDER, GROUND, 6,6MESTIC TAW
8." dome in black plastic or white
galvanized steel
COIMTAI
r
NEW!
POWDURA° OneCure Super >Duraple Topcoat
with Zinc Rich Primer"on Aboveground"
POWDURA° Onecure"" Two coat system ro -
• Zinc riche ox p per6es include:
P y primer
• Super durable TGIC polyester topcoat
• Superior corrosion and edge protection '
• Patent"pending formulated primer and topcoat
r
• Dual service options for above or underground applications
• Option #1: Ready -to -bury red oxide durable powder coating with black
• polyethylene AGUG dome
• Option 42: 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
Protective coatings and cathodic Protection The Purchaser and 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.TrinityContainers.com Call Toll Free: 888-558-8265
TRINITY'O
Containing Our World's Energy'
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General Specifications
Confo s to the latest edition of the ASME code for
Pressm Vessels, Section Vill, Division 1. Complies with
NFPA „I
B.
Rated t 250 psig from -20' F. to 125' F. All tanks may be
evacua ed to a full (14.7 psi) vacuum.
Vessel 1'-inish: Coated with epoxy red powder. ( Tanks coated
with thE I epoxy powder must be buried). For Aboveground use,
tanks m,lay be coated with TGIC powder.
Applicec ble federal, state or local regulations may contain
Specific requirements for protective coatings and cathodic
protect on. The purchaser and installer are responsible for
complijInce with all federal, state or local regulations.
- - WITHDRAWAL
VALVE
OTICE`
FLOAT GP. GAS ANODE
GAUGE CONNECTION
FILLER
J VALVE
g %
SERVICE! NAME
MULTIVALVE PLATE
RELIEF
VALVE
FITTINGS LAYOUT UNDER DOME
AGUG VESSEL DIMENSIONAL INFORMATION
All vesse
s dimensions are ap roximate
WATE
OUTSIDE
HEAD
OVERALL
OVERALL
LEG
LEG
WEIGHT
QUANTITY
FULL
PER
CAPAC
TY
DIAMETER
TYPE
LENGTH
HEIGHT
WIDTH
SPACING
LOAD
STACK
120 w'
.
24"
Ellip
5'- 5 13/16"
3' - 0"
" 10 1/8
3' - 0"
245 Ibs.
96
12
454.2
L
609.6 mm
1671.3mm
911.4 mm
257.2 mm
914.4 mm
111.1 kg.
250 w'°
31.5"
Hemi
7'- 2 1/2"
3' - 7 1/2"
12 3/4"
3' - 6"
472 Ibs.
63
9
946.3
L
800.1 mm
2197.1 mm
1104.9 mm
323.9 mm
1066.8 mm
214.1 kg.
320 wl'.
31.5"
Hem!
8' -11 3/4"
3' - 7 1/2"
12 3/4"
4' - 0 1/4"
588 Ibs.
45
9
1211.
L
800.1 mm
2736.9 mm
1104.9 mm
323.9 mm
1225.6 mm
266.7 kg.
500 w
.
37.42"
Hem!
9'- 10"
4' -1 7/16"
15"
5' - 0"
871 Ibs.
30
6
1892.
]L
950.5 mm
2997.2 mm
1255.7 mm
381.0 mm
1524.0 mm
395.1 kg
1000 w1g.
40.96"
Hem!
15' -10 13/16"
4' - 4 5/16"
16 1/4"
9' - 0"
1729 Ibs.
15
5
3785.
1L
1040.4 mm
4846.6 mm
1344.6 mm
412.8 mm
2743.2 mm
784.3 kg
Rev: Jan.'27, 2016
Why Tanks orrode
Undergroun steel tanks corrode due to an electrochemical reaction
between the ank and the surrounding soil. The process of corrosion
occurs due t'11 small voltage differences on the steel surface that result
in the flow o � DC current from one location to another. Where current
flows from the tank into the soil corrosion occurs. This location is called
the anode In, corrosion circuit: Where currentflows from the soil to the
tank, no corn lion occurs. The progress of corrosion Is determined by
the amount o ' current flowing between the anode and the cathode and
whetherthe I it of the anode/ cathode remain constant overtime.
Corrosion rat( are generally.higher in wet soil environments since the
conductivity o the soil promotes the flow of DC current In the corrosion
circuit.
�Corroslon generally exhibits itself on underground tanks In either a
general overall rusting or more commonly, a pltting attack. Pit locations
may result fro metallurgical conditions of the steel suraface or soil
Variations such as rocks, salts, fertilizer, moisture concentration, oxygen
concentration, to.
,a :..• :: �...
Prevenfing Corrosion
on
Protecting underground
._. _F. tanks from corrosion is
easily achieved bythe use
Of two commonlyappiled
Protection methods:
external coating and
cathodic protection.
These two methods
complementary
and should be used in
conjunction with the
other. An effective
external
coreventing
ating Insulates he steel from the soil environment, thus protective
Iflow of corrosi n current from the anode to the cathode. An eft ctive
extemaicoav cad protectover99%ofthetanksurfacearea. However,
no coating is perfe' t Damage from construction or soil stresses create
tiny' defects, which'may result in accelerated corrosion at the defect.
'athodlc protect101 prevents corrosion at those defects by applying
)C current from in external source, forcing the tank to become
athode. Application of sufficient DC current to the tank will prevent any
orrosion from occ `rring. The two general types of cathodic protection
Vstems are sacrifi ial and impressed current. Sacrificial systems are
sed when the amount of current required for the protection is small,
ich; as in undergr and propane tanks. impressed current systems
e more commonl i used for large structures such as large diameter
pelines. Electrical isolaffon of the tank from metallic piping systems
d electrical group s is critical for the cathodic protection system's
activeness.
Iw Sacrificial Gat ,odic Protection Works
adficiai systems prk 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 meals 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 N. This alloy should be used for soil applications over 10,000
ohm -cm resistivity.
The two most common anode sizes used for underground ne
tanks are 9 lb. and 171b. The size designation,relates to the meal 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 backflll. The anode and
backfill is then packaged in a cotton bag and:elther a cardboard box or
Paper bag. Actual shipping weight of these anodes with backflll is 27
lb. and 45 lb.
Application Recommendations
Magnesium anodes can protect underground tanks in most soil
conditions. The H-1 allay 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
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
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.
-
Soil Tvil
Ferti�eSoilsClay Sand, ©' Rocky
Mechanical section Under Dome
Tank Ca ' =;5 to 000 oil m-gym =«: 5000 to 10000 ohm -cm
i9ai)i?er ity� �K111io! = Size Qty. Alloy
1 H-1
H-1
250 FRIEN=t Nl m-, a9# 2 H-1
325
±� h ti i„
2 H-1
1000 }?< "2 K mF( t sc 9# 4 H-1
150017#r2 fN1f 9# 4 H-i
2000 I'i `x17#4 ;:T3< R=lIT I:? 9# 6 H-1
I*Based on 90% 11 ffective external coating, 2 m&V current density, and 30-
yearAnode life. f
Anode Installation
1. DetermIni 'size and quantity of anodes from application chart.
2. When a s gle anode is installed, it should be located near the
tank cent � on either side of tank.
3.When mu tiple anodes are installed, space them evenly around
the tank. ee examples below.
1 anode, 2 anodes 4 anodes
4-Anodes ato shipped in either cardboard boxes or multi -wall
paper sacl S. Remove outer container and bury the cloth bagged
anode. If node is supplied in plastic bag, remove plastic bag
before ins ailing.
5. Install anakep
s approximately two to three feet from the tank and
at least as as the center line of the tank. Anodes work best
In location $ with permanent moisture, so generally the deeper
the better.ig
6.After pthe anode, stretch out the anode connection wire
and exten over to a connection point on the tank fill pipe.
7. Cover the node with approximately six inches of backfill and
pour 5 gal ns of water on the anode to saturate the prepared
backfiii, 1A ter is necessary to activate the anode.
8. Connect t �111, anode wire to the tank with a low electrical
resistance 'i�connection. Examples are threaded stud on the
tank fill pi ae or any accessible metallic connection point to the
tank. All b nnections should be coated with a moisture -proof
material. �
9. Ideally, th tank connection is made in the area of the tank fill
pipe withli the covered dome. With access to the anode wire,
subsequer testing of the tank can Include measurement of
anode outl
It and verification of performance.
110.Verify pe 'I rmance of the anode using an appropriate test
procedure.',
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 a 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 blacktest lead into the Common jack an 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 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 Y? 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 oil, road salts, or other
substances that may contaminate the solution by absorption
through porous plug. Do not allow electrode to freeze.
Distributed By:
Ideal 'for use as a first stage regulator an any domestic size ASME or DOT container in propane gas
Installations requiring up to 1,500.000 BTU's per hour. The regulator is factory set to reduce container
pressure to an Intermediate pressure of approximately 10 PSIG.
ghformation
LV34'3TRV9 ""' F�pmmu.�'
/az" 10 PSIG Ov 9 00 flat1,500,000Mexlinum flow based on Intoanigher then the regulator selling end delivery pressure 20% lower than the regulator
Boiling Rnd delivery pressure 20°,5 lower than the golfing.
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 boilers. Also Incorporated In multiple cylinder Installations.
inq Onf®rmati®n
YS'F.NPT
'/a" F. NPT
F. POL
Yes 1 2,500,000
Lvalo,rRss I '/" FNPT I ° 1-5 I
1a Fan
When uped for 0nel stage pressure Control, must ellhor incorporate integral relisfvaive or separsla relief valve should be specified in accordance
with NF fA Pamphlet 58.
" Maximl Row based on Inlet pressure 20 PSIG hlgherthan the regulator setting and delivery pressure 2o% lower than the setting.
to reduce first stage pressure of 5 to 20 PSIG down to burner pressure, normally 11" w c.
iedium commercial installations, multiple cylinder installations and normal domestic loads.
ng Information
rrT.Y ipY Yl,
LV4403' 46 +/a" R NPT ID
1°w.c.o36R" at 10 9"to 13"3/" F. NPT PSIG w c Ovar Inlet 935,000
LV4403 66 Inlet
LV440316R• F. NPT
'sarkmour Idesign
"Maximum low based on 10 PSiG inlet and g" w.m delivery pressure.
The LV3-03BR Back Mount Regulator Is designed to reduce first stage pressure of 5-10 PSIG down to
burner p ssum normally 11" w.c. Designed as a second stage regulator for smaller applications with flow
requirem nts up to 450,000 BTU/hr. and are ideal for homes, mobile homes, and cottages.
Order nBnf®rmation
z2" F NPT rz t•.Ivr t 11" W.c. At 10 "
LV3403e46R W RNPT �/2ll PSIG Inlet 9 w c 3 Over Inlet 450,000 U�
Maximu flow based on 10 PSIG Inlet and 9" Mo. delivery pressure. LISTED
tita� f