HomeMy WebLinkAboutGAS TANK PRODUCT INFORMATIONx�"WRrA ..-�a7=*�a.',,. •,�,.- ;�.. ;�� --+ ...-...a, `c.a-rrY , ,:;2:.. �x -"-7.•>re-..,Nr_....,..-.,, '^� --z+ +.r: - �. ._ -: :'�:_.rr.: ,
EST&I
(. [
_
i. - .. - r.�t - '. `. l • is _
8" dome in black plastic or white
galvanized steel
a
POWDU t,/ eCure^ Superr Rurabe.a
vu�thrZin - Rr`ci�;zPrimer on .AhouegViaii
f?OWDjIJRA®`•UneCure 'TwocMtsy5fem,proper6es�in lutle:: s_
Zrnc rc6repoxppi im'er41
.Super du ' bfij TOIC polyesterrtopeoat
_
SUpefigr.• qo'.f "sibn'andr•edge prote:ctidn:
Pafentpend ng"foribulatedtpWh6r andaoIMA '
• 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 VIII, 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.
wwwTrinityContainers.com Call Toll Free: 888-558-8265
TRINITY'
®' o
Containing OurWorld's Energy-
WIDTH
General Specifications
)rms to the latest edition of the ASME code for
>ure Vessels, Section Vlll, Division 1. Complies with
158.
1 at 250 psig from -20' F. to 125' F. All tanks may be
rated to a full (14.7 psi) vacuum.
:I Finish: Coated with epoxy red powder, ( Tanks coated
ie epoxy powder must be buried). For Aboveground use,
may be coated with TGIC powder.
:able federal, state or local regulations may contain
is requirements for protective coatings and cathodic
tion. The purchaser and installer are responsible for
lance with all federal, state or local regulations.
�--� WITHDRAWAL
OTICEE VALVE
LP'
FLOAT ,' .GAS �
GAUGE ANODE
®�-CONNECTION
rr /
I ' FILLER
O O�-VALVE
C)
SERVICE/ � NAME
MULTIVALVE PLATE
RELIEF
VALVE
FITTINGS LAYOUT UNDER DOME
AGUG VESSEL DIMENSIONAL INFORMATION
All vessels dimensions
are approximate
WATER
CAP ITY
OUTSIDE
HEAD
I OVERALL
OVERALL
LEG
LEG
WEIGHT
QUANTITY
III
DIAMETER
TYPE
LENGTH
HEIGHT
WIDTH
SPACING
FULL
PER
120'
454 2 L
24"
Ellip
5' - 5 13/16"
3' - 0"
10 1/8"
3' - 0"
245 lbs.
LOAD
96
STACK
12
609.6 mm
1671.3mm
911.4 mm
257.2 mm
914.4 mm
111.1 kg.
250 g.
946.,: L
31,5"
Hem!
T - 2 1 /2"
3' - 7 1/2"
12 3/4"
3' - 6"
472 Ibs.
63
9
800.1 mm
2197.1 mm
1104.9 mm
323.9 mm
1066.8 mm
214.1 kg.
320 g.
1211
Hemi
8' -11 3/4"
3' - 7 1/2"
12 3/4"
4' - 0 1/4"
588 Ibs.
45
9
L
0. r
800.1 mm
2736.9 mm
1104.9 mm
323.9 mm
1225.E mm
266.7 kg.
5000.
1892. L
37.42"
950.5 mm
Hemi
9' -10°
4' -1 7/16"
15"
5' - 0"
871 Ibs.
30
6
-,I
2997.2 mm
1255.7 mm
381.0 mm
1524.0 mm
395,1 kg
1000'li19.
3785.,0 L
40.96"
1040.4
Hemi
15' -10 13/16"
4' - 4 5/16"
16 1/4"
9' - 0"
1729 Ibs.
15
5
VI
mm
4846.E mm
1344.E mm
412.8 mm
2743.2 mm
784.3 kg
Rev: Jan. 27, 2016
ter_
Why Ta ks Corrode
Underg ound steel tanks corrode due to an electrochemical reaction
betwee the tank and the surrounding soil. The process of corrosion
occurs ue to small voltage differences on the steel surface that result
in the fl w of DC current from one location to another. Where current
flows fr m the tank into the soil corrosion occurs. This location is called
the ano ,,in a corrosion circuit. Where current flows from the soil to the
tank, no corrosion occurs. The progress of corrosion is determined by
the amo int of current flowing between the anode and the cathode and
whether the locations of the anode/ cathode remain constant over time.
Corrosi' i rates are generally higher in wet soil environments since the
conduct lity of the soil promotes the flow of DC current in the corrosion
circuit.
Corrosion�,I,erall
generally exhibits itself on underground tanks in either a
general c rusting or more commonly, a pitting attack. Pit locations
may res it from metallurgical conditions of the steel suraface or soil
variation, such as rocks, salts, fertilizer, moisture concentration, oxygen
concentration, etc.
Preventing Corrosion
Protecting underground
r " _ tanks from corrosion is
easily achieved by the use
Of two commonly applied
protection methods:
external coating and
cathodic protection.
These two methods
are complementary
_F and should be used in
conjunction with the
other, An effective
external protective
coating in lates the steel from the soil environment, thus preventing
the flow of orrosion current from the anode to the cathode. An effective
external co � Ingcan Protect over 99%ofthe tank surface area. However,
no coating i perfect. Damage from construction or soil stresses create
tiny defects' which may result in accelerated corrosion at the defect.
Cathodic pr' tection prevents corrosion at those defects by applying
DC current from an external source, forcing the tank to become
cathode. ication of sufficient DC current to the tank will prevent any
corrosion fr' m occurring. The two general types of cathodic protection
systems are 3acrificial and impressed current. Sacrificial systems are
used when t e amount of current required for the protection is small,
such as in L I iderground propane tanks. Impressed current systems
are more imonly used for large structures such as large diameter
pipelines. El ictrical isolation of the tank from metallic piping systems
and electrica grounds is critical for the cathodic protection system's
P.f nnf7Vanaco l
How Sacrltic] Cathodic Protection Works
Sacrificial., 11f Ms work by creating a galvanic connection between two
different metals. The most common anode material is magnesium,
which when coupled to steel results in DCcurrent 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 10,000
ohm -cm resistivity.
The two most common anode. sizes used for underground propane
tanks are 9 Ib. and 1.7lb. 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 sizetanks 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 throughsoil 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 thatwiil accelerate
corrosion of the steel tank when directly connected to copper piping.
Generally, copper piping does not require cathodic protection.
Soil Type
I yp
ank Cap.
(gal.)
5 ` ie ils+'G ayi
Lo
5 t 50 ;h nam
�? .•�� Gravel, Rocky
Areas
5000 to 10000 ohm -cm
Siz
�
Size
Qty.
Alloy
120
150
9#
1
H-1
9#
1
H-1
j 250
9
9
1
9#
2
H-1
325
9#
2
H-1
500
9#
2
H-1
1000
1: 9#
�H 9#
4
H-1
1500
4
H-1
2000
" 9# 1
6
H-1
*Based' n 90% effective external coating, 2 ma/ft2 current density, and 30-
yearAn de life.
Anode hstallation
1. De ermine size and quantity of anodes from application chart.
2. W 'Ipn a single anode is installed, it should be located near the
tank center on either side of tank.
3.W hen multiple anodes are Installed, space them evenly around
the;tank. See examples below.
1 ' 1 node 2 anodes 4 anodes
C ID
0 0
4.An �es are shipped in either cardboard boxes or multi -wall
pap r sacks. Remove outer container and bury the cloth bagged
ano e. If anode is supplied in plastic bag, remove plastic bag
bef �e installing.
5. Instill anodes approximately two to three feet from the tank and
at le' st as deep as the center line of the tank. Anodes work best
in I�'etter.
ations with permanent moisture, so generally the deeper
the
6.Afte; placing the anode, stretch out the anode connection wire
and extend over to a connection point on the tank fill pipe.
7. Cov the anode with approximately six inches of backfill and
you j�5 gallons of water on the anode to saturate the prepared
bac' ill. Water is necessary to activate the anode.
8.Con� pct the anode wire to the tank with a low electrical
resis ance connection. Examples are threaded stud on the
tank ill pipe or any accessible metallic connection point to the
tank. All connections should be coated with a moisture -proof
mate r ial.
9. Ideal r, the tank connection is made in the area of the tank fill
pipe �i ithin the covered dome. With access to the anode wire,
subsequent testing of the tank can include measurement of
anod output and verification of performance.
10.Veri , performance of the anode using an appropriate test
Mech,6,j ail 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/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 black test lead into the Common jack on the meter,
and connect the opposite end of the lead to a charged reference
electrode (% 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 oil, road salts, or other
substances that may contaminate the solution by absorption
through porous plug. Do not allow electrode to freeze.
Distributed By:
ragulato
for use q a first to 1 600,000 on any domestio size ASME or DOT contalner In propane gas
ettons requiting lip to 1,600,000 BTU's per hour. The regulator is factory set to urs to an intermediate pressure of approximately 10 PSIG. reduce container
V84MeTRV9 '/," FNPT I %' FNPT �/32" Over Outlet
Maximum flow haeedion Iniek pressure ED PSIG higher then the regulators 011ng clod delivery o 1,600,000
Rna and dellve ng 9.OD
ry pressure eel pressure
e 2 Ihs Getting,
ry pressure 20% lower than the regulator
accurate first stage regulation In twa=
ate pressure of to 10 stage bulk tank systems. Reduce tank pressure to an
PSIG. Also used to supply high pressure burners for applications like
furnaces or boilers, Also Incorporated In multiple cylinder instaiiatlons.
!"a 1911fair i ation
NPT
1" F. NPT
F POL Y4„
sla" F NPT
Yes I 2,soo,000
Pamphlet
al slags pressure wnirol, muetelthsrineo V
l pamphiet 68 rporele Integral rellervalve arapsrate rellarvalve ehouid Row based on Inlet pressure 20 P91G hlgharihen the ragulalorse0ing and delivery pressure 20% la be apeoiRed in accordance
houlan the salting,
e reduce first stage pressure of ti to 20 PSIG down to burner pressure, normally 11"w.c.
ledlum oommerclal Installations, multiple cylinder Installations and normal domestio loads,
rag linforguaition
Ve F NPT
N? F NPT D28
1" F NPT
10 P61G inlet end On W.0. degverypressure.
11° vv.c.
Palo9°w a�
Inlet 3�� Over Inlet 938,000
IR Back Mount - ' i ' i
Regulator Is designed to first stage pressure of S. PSiG down to
ire normally 11" yy c, Designed reduce
as a seoond stage regulator for smaller applications with
UP to 450,00013TU/ht: and are ideal for homes, molit3 homes, and cottages, Inf®tr bw
/" F.AiPT o � �NPi
/a FNp7' P51G Inlet B to 13 Over inlet Vow based an 10 pslt3lnlatand 9 wc. delive wa 450,000
° ry pressure. � �o
•.i