HomeMy WebLinkAboutPRODUCT APPROVALABOVEGROUND/dNDER. GROUND. M
DOMESTIC NI(S
,zo 2.000,,g
8" dome in black plastic or white
galvanized steel
ii s, 9? PSG+ i
1.
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M.
1
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NEW!
.. _
POWDURAO OneCurow-Super Durable Topcoat
with Zinc Rich Primer on -Aboveground
POWDURAP OneCure Two coat system properties include:
• Zinc rich epoxy primer
• Super durable TGIC polyester topcoat
• Superior corrosion and edge protection'
• 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
r`
• 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
"mITY• #72 liquid level outage valve orifice reduces refueling emissions
• Vacuum pre -purged to save time, money and product
C O N TA 1 N E R S '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 indut y rn._pulatec n�- e.,tr,odr�
Protection is required and coating must he continuous and uninterrupted and must
•
comply with an local, state or national code.
www.TrinityContainers.com Call Toll Free: 888-558-8265
•
TRINITY
Containing OurWorld's Energy'
WIDTH
General Specifications
Confonns to the latest edition of the ASME code for
Pressu a Vessels, Section VIII, Division 1. Complies with
NFPA f '8.
Rated It 250 psig from -20' F. to 125° F. All tanks may be
evacuated to a full (14.7 psi) vacuum.
Vessel inish: Coated with epoxy red powder. ( Tanks coated
with thd epoxy powder must be buried). For Aboveground use,
tanks n, ay be coated with TGIC powder.
AppllcE le federal, state or local regulations may contain
specific requirements for protective coatings and cathodic
protect on. The purchaser and installer are responsible for
compliance with all federal, state or local regulations.
--�, WITHDRAWAL
VALVE
FLOAT L.P. M ANODE
GAUGE CONNECTION
FILLER
f � VALVE
O Q ,
SERVICE / � NAME
MULTIVALVE PLATE
RELIEF
VALVE
FITTINGS LAYOUT UNDER DOME
AGUG VESSEL DIMENSIONAL INFORMATION
All vesse
S dimensions are ap roximate
WAT
OUTSIDE
HEAD
OVERALL
OVERALL
LEG
LEG
WEIGHT
QUANTITY
FULL
PER
CAPAC
TY
I DIAMETER
TYPE
LENGTH
HEIGHT
WIDTH
SPACING
LOAD
STACK
120 w3.
24"
Blip
5'- 5 13/16"
3' - 0"
10 1/8"
V - 0"
245 Ibs.
96
12
454.2
i
609.6 mm
1671.3mm
911.4 mm
257.2 mm
914.4 mm
111.1 kg.
250 w
.
31.5"
Hem[
7'- 2 1/2"
3' - 7 1/2"
12 3/4"
3' - 6"
472 Ibs.
63
9
946.3
800.1 mm
2197.1 mm
1104.9 mm
323.9 mm
1066.8 mm
214.1 kg.
320 w
.
31.5"
Heml
8' -11 314"
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
1892.5IL
950.5 mm
2997.2 mm
1255.7 mm
381.0 mm
1524.0 mm
395.1 kg
1000
6.
40.96"
Hem[
15' -10 13/16"
4' - 4 5116"
16 1/4"
9' - 0"
1729 Ibs.
15
5
3785.O�1L
1040.4 mm
1
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 tank and the surrounding soil! The process of corrosion
occurs due small voltage differences on the steel surface that result
In the flow ;DO current from one locatlo6 to another. Where current
flows from a tank Into the soil corrosion occurs. This location is called
the anode In i, corrosion circuit Where currentflows from the soil to the
tank, no corn sion occurs. The progress afcorrosion Is determined by
the amount current flowing between the anode and the cathode and
whetherthe I cations of the anode/cathodes remain constant overtime.
Corrosion rats are generally higher in wet soil environments since the
conductivity the soil promotes the flow of DC current in the corrosion
circuit.
Corrosion ge 'eraliy exhibits itself on underground tanks In either a
general averal rusting or more commonly, a pitting attack. Pit locations
may result fr m metallurgical conditions of the steel suraface or soil
variations suc � as rocks, salts, fertilizer, moisture concentration, oxygen
concentration, tc.
- _ Preventing corrosion
,j Protecting underground
xnsa �<ti a ,
tanks from
r.• �..� .,.,:.M ..,;::.,. corrosion is
easily achieved bythe use
Of two commonly applied
protection methods:
E z, external coating and
Cathodic protection.
I here two methods
are complementary
and should be used in
conjunction with the
Other. An effective
external protective
ating insulate the steel from the soil environment, thus preventing
9 flow of corro an current from the anode to the cathode. An effective
ternalcoating anprotectover99%ofthe tanksurfacearea. However,
coatingispei ect Damage from construction or soil stresses create
y defects, which may result in accelerated corrosion at the defect.
�hodic protect bn prevents corrosion at those defects by applying
current from an external source, forcing the tank to bme
lode. Applica on of sufficient DC current to the tank will prevent any
rosion from ai ourring. The two general types of cathodic protection
tems are sacra iclal and impressed current Sacrificial systems are
tl when the aunt of current required for the protection is small,
h as in under iround propane tanks. impressed current systems
more commo ly used for large structures such as large diameter
dines. Electric�ai isolation of the tank from metallic piping systems
electrical grouinds is critical for the cathodic protection systems
.tivPnecs
Sacrificial C 'thadlc Protection Works
flelai 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-i 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 soli 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
backf ll is then packaged In a cotton bag and :either a cardboard box or
paper bag. Actual shipping weight of these anodes with backfiil 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 recommendationsforvarlou' 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.
' fertlj®;5oils
Sand, Grp ,___,j"Racky
Soil Ty
le ,Clay;
.:
Areas
Tank Ca
15;tusoQtir'dhm=hljiW?
5000 to 10000 ohm -cm
Size
Qty.
Alloy
9#
1
H-1
1503s9jiC
9#
1
H-1
250
9#'
2
H-1
325
x ;4
1=
9#
2
H-1
500
?'�_g�w'�
I �{'tr
9#
2
H-1
1000
9#
4
H-1
1600
#
% ro
4' , = ="
9#
4
H-1
2
9#
1 aI
H-1
'Based on 90 % ffective external coating, 2 maM current density, and 30-
vearAnodelife.
1. Determine size and quantity of anodes from application chart.
2. When a s rigle anode is Installed, it should be located near the
tank cent t on either side of tank.
3. When mu liple anodes are installed, space them evenly around
the tank. Pee examples below.
3node 2 anodes 4 anodes
4.Anodes ate shipped in either cardboard boxes or multi -wall
paper sac s. Remove outer container and bury the cloth bagged
anode. If 'node is supplied in plastic bag, remove plastic bag
before In (ling.
5. Install ano as 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.
6.After placir g the anode, stretch out the anode connection wire
and extenc 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
backfill. ton
ater is necessary to activate the anode.
8. Connect tanode wire to the tank with a low electrical
resistancenection. Examples are threaded stud on the
tank fill pi a or any accessible metallic connection point to the
tank. All connections should be coated with a moisture -proof
material.
9. Ideally, the Itank connection is made in the area of the tank fill
pipe within the covered dome. With access to the anode wire,
subsequen testing of the tank can Include measurement of
anode output and verification of performance.
O.Verify pert rmance of the anode using an appropriate test
procedure.
Mechanical ��__� iiection 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 multivaive. A good solid connection is very important.
(DO NOT connect to shroud).
STEP 2: Insertthe 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 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 A 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 protectedl.
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 all, road salts, or other
substances that may contaminate the solution by absorption
through porous plug. Do not allow electrode to freeze.
Distributed By:
Ideal ft use as a first stabe regulator an any domestic size ASME or DOT container In propane gas
Installet ns requiring up to 1,500,000 BTU's per hour. The regulator is factory set to reduce container
pressur�to an Intermediate pressure of!approximately 10 PSIG.
Lva4o ,A '/'" RNPT '/V RNPT lhi' 10 PSIG ""�' """�` 1,500,000
9:OD
• Maxim m flow basedlon inlet pressure 20 PSIG hlgher than the regulator setting and delivery pressure 20% lower than the regulator
selling an delivery pressure 2o% lower than the setting.
accurate first stage regulatlon'ln 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.
only Information
'A' F. NPT
'/" F. NPT
V„
Yes 2,500,000
LV440 IR96 F POL
5 1-5
LV440 TR96 a" F.NPT 10 5-10
when sad for anal stage pressure control, must either Incorporate Integral rallef velva or separate milef valve should be epectlied In accordance
wilh N A Pamphlet 59.
•' Maxim P now based on Inlet pressure 20 PSIG hlghsrthan the regulator setting and delivery pressure 20% lower then the setting.
DesignO to reduce first stage pressure of 5 to 20 PSIG down to burner pressure, normally 11" w.c.
Ideal for medium commerclal installations, multiple cylinder installations and normal domestio loads,
Orde Ing Information
*440
t/It
Ya" F. NPT 11" W.C.
�LV#28 at 10 9" to 13" guar Inlet 935,000
'/" F. NPT Drili PSIG W.C.
LV440 ;ass Inlet
LV4403 R• '��� F NPT
66
'sackmo nldeaign
•' Maxlmur� now baeed on 10 PSIG Inlet and 9" w.c. deliveryprassure.
The LV 403BR Back Mount Regulator Is designed to reduce first stage pressure of 5-10 PSIG down to
burner ressure normally 11" w.c. Designed as a second stage regulator for smaller applications with flow
require ants up to 450,000 BTU/hr. and are ideal for homes, mobile homes, and cottages.
Orde Ing Information
wUwOohyn I
Va" F.NPT '/i' I .NPT 11° W.C. At 10 9' to 13° -
LV3403 p6R e/" F.NPT /32 PSIG Inlet w.c. Over Inlet 450,000
* Maxll flow based on 10 PSIG Inlet and 9" w.c, delivery pressure
9
LISTBIC