SAFETY FIRST
Bulk Tank Safety Data
Special Notice
This booklet is intended for personnel who are familiar
with cryogenic liquefied gases and the handling of
cryogenic fluids. If you are not familiar with the principles
of operation and safe practices for this equipment, we
urge you to read and fully understand the Safety Precautions and reference publications and reference publications in this manual before attempting operation or
maintenance.
TW-202
Table of Contents
Principles of Safe Operation ........................................... 3
Safety Precautions Liquefied Gases ............................ 3
Installation Safety ............................................................ 9
Functional Descriptions ................................................... 10
Initial Filling Safety .......................................................... 12
Maintenance Safety ........................................................ 13
Moving the Tank .............................................................. 15
Special Notice:
Failure to use and operate this equipment in accordance with the
manufacturers instructions and industry standards can lead to serious
injury or death.
2
Principles of Safe Operation
Cryogenic systems present potential hazards which the users must understand and
consider when operating such systems. Thorough understanding of the potential
hazards and the safety precautions necessary to prevent accidents is absolutely
essential. All persons involved in the operation and maintenance of the system must
read and understand the safety precautions contained in this booklet and the
reference publications listed herein. Complete familiarity with the equipment of the
system is also necessary. All operators must carefully read and understand the
pertinent instructions before proceeding with their work.
To protect personnel and equipment, observe the following points:
1. Operate the equipment with competent operators, adequately trained
and properly supervised. Never allow unqualified persons to attempt to
operate or repair the system
2. Keep the equipment in good operating condition. Schedule regular
inspections and correct any discrepancies promptly. Keep a record of
all inspections and repairs as described in the Maintenance Section of
this booklet.
3. Establish and maintain an effective program for handling possible
emergency situations. Conduct simulated emergency drills to ensure
that operating personnel are familiar with the emergency action plan.
4. When field installed options are incorporated with the tank installation,
full consideration must be given to providing adequate safety relief
devices.
Safety Precautions - Liquid Gases
The following safety precautions are for your protection. Before performing installation,
operating, or maintenance procedures, read and follow all safety precautions in this
booklet and in reference publications. Failure to observe all safety precautions can
result in property damage, personal injury, or possible death. It is the responsibility of
the purchaser of this equipment to adequately warn the user of the precautions and
safe practices for the use of this equipment and the cryogenic fluid being used.
Extreme cold can cause frostbite injury. Accidental contact with cryogenic liquid or
cold issuing gas may cause a freezing injury similar to frostbite. Handle the liquid
so that it wont splash or spill. Protect your eyes and cover the skin where the
possibility of contact with the liquid, cold pipes and cold equipment or the cold
3
gas exists. Safety goggles or a face shield should be worn around cryogenic equipment.
Ejection or splashing may occur, or cold gas may be released from equipment. Clean
insulated gloves that can be easily removed and long sleeves are recommended for arm
protection. Cuffless trousers should be worn outside boots or over the shoes to shed
spilled liquid. If clothing should be splashed with liquid oxygen or otherwise saturated, the
clothing will be highly flammable and easily ignited. While the concentrated oxygen
remains, air out the clothing immediately, removing it if possible. Do not consider
saturated clothing safe for at least 30 minutes.
For more detailed information concerning safety precautions and safe practices to be
observed when handling cryogenic liquids, consult CGA pamphlet P-12 Handling
Cryogenic Liquids (see page 15).
Liquid Oxygen
Oxygen is a colorless, odorless, and tasteless gas that can be condensed into a liquid at
the low temperature of -297°F (-183°C) under normal atmospheric pressure. Approxi-
mately one-fifth of normal air is oxygen. As a liquid, oxygen is a pale blue color.
Oxygen causes fire to burn rapidly. Oxygen is non-flammable but vigorously
accelerates the burning of combustible materials. Keep combustibles away from oxygen
and eliminate ignition sources. Many substances which do not burn normally in air require
only a quick spark or moderate heat to set them aflame in the presence of concentrated
oxygen. Other substances which are only moderately combustible in air can burn violently
when a high percentage of oxygen is present.
Do not permit smoking or open flame in any area where liquid oxygen is present. Keep
all organic materials including hydrocarbons and other flammable substances away from
contact with liquid nitrogen. Some of the materials that can react violently with oxygen are
oil, grease, kerosene, cloth, wood, paint, tar and dirt which contains oil or grease. Under
certain conditions, flammable materials which have been permeated with liquid oxygen
are impact sensitive and can detonate if subject to shock.
Keep area surfaces clean to prevent ignition. As normal industrial soot and dirt can
constitute a combustion hazard, all equipment surfaces must be kept very clean. Do not
install oxygen equipment on asphalt surfaces or allow grease or oil deposits on concrete
surfaces in the vicinity of the oxygen equipment. Equipment to be used in contact with
liquid nitrogen should be handled only with clean gloves or hands washed clean of oil.
Replacement parts must be suitable for oxygen service. Many materials, especially
some non-metallic gaskets and seals constitute a combustion hazard when in oxygen
service, although they may be acceptable for use with other cryogenic liquids. Make no
substitutions for recommended spare parts. Also, be sure all replacement parts are
thoroughly Clean for Oxygen Service (see page 15).
4
Observe safety codes when locating oxygen equipment. Prior to installation, become
thoroughly familiar with the National Fire Protection Association (NFPA) Standard No.
50, Bulk Oxygen Systems (see page 15), and with all local safety codes. The NFPA
Standard covers the general principles recommended for installation of bulk oxygen
systems on industrial and institutional consumer premises.
Liquid Nitrogen and Liquid Argon
Nitrogen is an inert, colorless, odorless and tasteless gas which makes up four-fifths of
the air you breathe. Liquid nitrogen is obtained by cooling air until it becomes a liquid
and the removing the oxygen which makes up most of the other fifth of air. Liquid
nitrogen is at a temperature of -320°F (-196°C) under normal atmospheric pressure.
Liquid argon is an inert gas whose physical properties are very similar to nitrogen and
represents about 1% of the air you breathe.
Keep equipment area well ventilated. Although nitrogen and argon are non-toxic and
non-flammable, they can cause asphyxiation in a confined area without adequate
ventilation. Any atmosphere which does not contain enough oxygen for breathing can
cause dizziness, unconsciousness, or even death. Nitrogen and argon are colorless,
odorless, and tasteless and cannot be detected by the human senses. They will be
inhaled normally as if gas were air. Without adequate ventilation, the expanding gas will
displace the normal air without warning that a non life-supporting atmosphere is
present. Store liquid containers outdoors or in other well-ventilated areas.
Dispose of waste liquid and argon safely. Dispose of waste liquefied gases out-ofdoors where cold temperature cannot damage floors or driveways and where they will
evaporate rapidly. An outdoor pit filled with clean sand or gravel will evaporate liquid
nitrogen and argon safely and quickly.
Liquid Hydrogen
Hydrogen is a flammable, colorless, odorless and tasteless gas which may be
condensed into a liquid at the very low temperature of -423°F (-253°C) under normal
atmospheric pressure. Gaseous hydrogen is always present where there is liquid
hydrogen. Hydrogen gas burns with a pale blue, almost invisible flame when mixed with
air or other oxidizers, and is explosive over a wide range of mixture.
Eliminate hydrogen accumulation and ignition sources.
Concentrations of hydrogen between 4% and 75% by volume in air are relatively easy to
ignite by a low-energy spark. Smoking, open flames, unapproved electrical equipment,
and other ignition sources must not be permitted in hydrogen areas. Possible ignition by
electrostatic sparks must be prevented by earthgrounding all hydrogen storage
and handling equipment. Hydrogen containers should be stored outdoors in
well-ventilated areas.
5
Keep air and other gases away from liquid hydrogen. The low temperature of liquid hydrogen can solidify any gas except helium. Solidified
gases and liquids allowed to form and collect can plug pressure-relief
passages and foul relief valves. Plugged passages are hazardous because
of the continual need to relieve excess pressure produced as heat leaks
into the continually evaporating liquid. Air, being 21% oxygen, must be
kept out of contact with liquid hydrogen to prevent accumulation of
potentially explosive oxygen concentrations. Therefore, always store and
handle liquid hydrogen under positive pressure and in closed systems to
prevent the infiltration and solidification of air or other gases.
Keep exterior surfaces clean to prevent combustion. Atmospheric air
will condense on exposed liquid hydrogen-cooled surfaces, such as
vaporizers and piping. Nitrogen, having a lower boiling point than oxygen,
will evaporate first from condensed air, leaving oxygen enriched liquid. To
prevent the possible ignition of grease, oil or other combustible materials
which could come into contact with the air-condensing surfaces, such
areas must be cleaned to oxygen-clean standards. Consult CGA pamphlet
G-4.1 Cleaning Equipment for Oxygen Service (see page 15).
Extreme cold Cover eyes and exposed skin. Accidental contact with
liquid hydrogen or cold issuing gas with the skin or eyes may cause a
freezing injury similar to frostbite. Handle the liquid so that it wont splash
or spill. Protect your eyes and cover the skin where the possibility of
contact with the liquid, cold pipes and cold equipment, or the cold gas
exists. Safety goggles or a face shield should be worn if liquid ejection or
splashing may occur or cold gas may issue forcefully from equipment.
Clean, insulated gloves that can be easily removed and long sleeves are
recommended for arm protection. Cuffless trousers should be worn or
over the shoes to she spilled liquid.
Keep equipment area well ventilated. Although hydrogen is non-toxic, it
can cause asphyxiation in a confined area without adequate ventilation.
Any atmosphere which does not contain enough oxygen for breathing can
cause dizziness, unconsciousness, or even death. Hydrogen being
colorless, odorless, and tasteless and cannot be detected by the human
senses. They will be inhaled normally as if gas were air. Without adequate
ventilation, the expanding gas will displace the normal air without warning
that a non life-supporting atmosphere is present. Store liquid
containers outdoors or in other well-ventilated areas.
6
Observe safety codes when locating hydrogen equipment. Before
locating liquid hydrogen equipment, refer to National Fire Protection
Association (NFPA) Standard No. 50B, Liquefied Hydrogen Systems at
Consumer Sites (see page 15).
Carbon dioxide
Carbon dioxide cannot be detected by the human senses and will be
inhaled like air. If adequate ventilation is not provided, carbon dioxide may
displace normal air without warning that a life-depriving atmosphere is
developing. Store and use containers outdoors in well-ventilated areas.
Keep equipment area well ventilated. Carbon dioxide can cause
asphyxiation or death. Carbon dioxide effects the important acid-base
balance in the body. The gas is formed in normal functioning within the
body, but the body can tolerate increased amounts of carbon dioxide only
in limited concentration. For safety, concentrations above this level should
not be permitted; increased concentrations can cause bodily harm or
death. Additionally, carbon dioxide can cause asphyxiation by displacing
oxygen resulting in dizziness, unconsciousness or death.
Extreme cold cover eyes and skin. If released to atmosphere, liquid
carbon dioxide will turn to carbon dioxide snow (or dry ice). Accidental
contact of carbon dioxide snow and cold gas with the eyes or skin may
cause severe frostbite. Handle liquid so that it will not vent or spill. Protect
your eyes with safety goggles or face shield, and cover the skin to prevent
contact with snow and cold gas, or with cold pipes and equipment.
Protective gloves that can be quickly and easily removed and long sleeves
are recommended for protection. If you are accidentally exposed to cold
snow or gas, consult a physician at once. Warm affected areas with water
that is near body temperature.
Static electricity Ground all piping. The rapid discharge of liquid
carbon dioxide through a line which is not electrically grounded results in
a buildup of static electricity. Contact with this electrical charge could be
startling and potentially dangerous to operating personnel. Such lines
should, therefore, be grounded before use.
For additional information on handling of CO
Safety Data Sheet for Carbon Dioxide available from your gas
, refer to a Material
2
supplier. If you are not fully familiar with the principles of operation
7
and safe practice for Carbon Dioxide equipment, we recommend that you
read CGA Pamphlet G-6 available from the Compressed Gas Association, Inc. (see page 15).
Nitrous Oxide
Nitrous oxide has no color, no odor and practically no taste. It is obtained
by thermal decomposition of ammonium, which yields nitrous oxide and
water. Due to the toxic impurities produced in this process, the water is
condensed out and the gas is passed through scrubbing towers to
remove impurities.
Keep equipment area well ventilated. Due to the difficulty of detecting
nitrous oxides presence, there is imminent dangers of loss of consciousness and physical inability to function if exposed to medium or high
levels. Since nitrous oxide is a non-toxic gas, there are hazards are
created when life-supporting oxygen is displaced and diluted. It is
imperative to maintain a well-ventilated work environment to minimize the
danger from a leaking systems or activated safety relief device.
Nitrous oxide causes fires to burn rapidly. Nitrous oxide is nonflammable but, as with oxygen, ignition of combustible materials may
occur more readily in a nitrous oxide-enriched atmosphere than in air with
combustion proceeding at a faster rate. Open flame and smoking are
strictly prohibited.
For more detailed information concerning safety precautions and safe
handling of nitrous oxide, consult CGA pamphlet G-8.2, a Standard for
Nitrous Oxide (see page 15).
8
Installation Safety
Installation Drawings
Dimension and connection data for this tank can be found on the General
Arrangement drawing supplied with each tank. Additional copies of these
drawings can be purchased from the factory. Please include information
on tank model number, part number, serial number and project number, if
known, in drawing requests.
Rigging Instructions
Vertical tanks are shipped in the horizontal position, secure on permanent
shipping legs (500,900,1,500, and 3,000 gallon) or on temporary wooden
cradles (6,000, 9,000, 11,000 and 13,000 gallon) which must be removed
prior to erection of the tank. Make certain that rigging equipment has
adequate capacity to safety handle the weights involved. Employ experienced personnel for erection of the tank. Re-use the wooden cradles
supplied with the tank if the tank must be stored in the horizontal position.
Caution
To prevent possible tip over, do not leave the tank standing upright unless
it is anchor bolted on its specified foundation or other hard surfaces
capable of supporting its weight. Loading on the tank legs is great enough
to cause them to sink into most surfaces other than reinforced concrete,
and a brisk wind may cause the tank to tip over.
Pre-Installation Inspection
Before erecting the tank, inspect it carefully for possible shipping
damage.Report any damage to the carrier and the factory. In addition,
check thevacuum as follows:
1. These tanks are shipped pressurized with nitrogen gas. Check tank
pressure by connecting a 0-30 psig (0-207 kPa/0-2 bar) pressure
gauge to the outlet tube of the full trycock valve using welding hose
and clamps or using the pressure gauge supplied with the tank. If
pressure is below 3 psig (21 kPa/0.2 bar) and no repairable leaks are
found, contact the factory in accordance with the warranty.
2. Check insulation space vacuum. If as received vacuum (tank at
ambient temperature) is above 750 microns, contact the
factory.
9
Note
If the tank is empty and warm, vacuum space pressure will tend to be high
because of the release of gasses from the absorbent package inside the
vacuum space. Vacuum level should decrease to an acceptable level
when the liquid container is filled with cold product.
Note
An abnormally high vacuum reading without other evidence of vacuum
loss (excessive pressure, rapid venting, etc.) may be caused by a fault in
the gauging equipment or by improper operation of the equipment. Be
sure that the vacuum gauge tube are in good condition, and compatible.
Follow operating instructions carefully. Always be sure that the gauge tube
valve has been open for at least 30 minutes before taking a minute.
Foundation Details
Foundation bolt location dimensions and tank weights are shown on the
General Arrangement Drawing. The dimensions of mounting bolt locations
are for layout of the foundation only. This information should be used
along with tank weights from the General Arrangement drawing, and the
seismic zone requirements for your area and service. To determine
foundation requirements, local soil characteristics must be considered for
foundation construction as well as state and local codes and many other
factors. We recommend that you retain the services of a local civil
engineer to ensure all requirements of foundation construction are met.
Tank-Mounted Vaporizers
Many tanks, shipped with a vaporizer attached, are ready for service as
soon as the tank is installed. If additional vaporizers are ordered with the
tank, they are shipped separately with attaching hardware. A shut-off valve
should be installed downstream of the vaporizer. A line relief valve with
suitable capacity/service must be installed between the shut-off valve and
vaporizer.
Note
Installation of a suitable low-temperature shut-off device at the outlet of
the product vaporizer is recommended for systems in combustible gas
service or any system utilizing carbon steel piping.
10
Functional Descriptions
Vacuum System
Taylor-Wharton tanks are vacuum-sealed. The space between the casing
and the liquid container is filled with high quality insulation, pumped to a
high vacuum, and sealed at the factory. An absorbent is factory installed in
the vacuum space to help maintain the vacuum by absorbing any outgassing from the materials in the vacuum space. The evacuation valve is
sealed at the factory, but may be used for field re-evacuation by qualified
personnel if necessary.
A thermocouple type vacuum gauge tube, located on the head of the
casing, should be used to check tank vacuum in the field. The casing is
protected against internal overpressure by a bursting disc or safety relief
life plate device located on the upper head of the tank.
Filling Circuits
The tank is filled with product through the fill connection with two hand
valves. The liquid fill valve line extends to the bottom of the liquid container.
The gas valve line extends to the top of the liquid container. Filling from the
top of the container tends too decrease tank pressures; while filling from
the bottom tends to increase tank pressure. The blowdown valve is opened
for venting and throttled to maintain desired tank pressure during liquid
phase filling. The full trycock valve is used to determine when the tank is
full.
Gauge Circuits
Pressure in the liquid container is displayed by the tank pressure gauge.
The liquid contents gauge provides an indication of the amount of liquid
product in the tank. The contents gauge is calibrated in inches of water
column and a gauge chart is used to convert the gauge reading s to
pounds and gas equivalent values. The contents gauges indicates the
difference in pressure between the top and the bottom of the tank and
provides an approximation of the amount of liquid in the tank. It should not
be considered accurate enough for precise measurement of the amount of
liquid added to or withdrawn from the tank.
11
Pressure Building Circuit
The pressure building system provides a means of maintaining tank
pressure at a preset value during product withdrawal. This system
operates when the pressure building isolation valves are opened. Liquid
flows through the pressure regulator to the pressure building vaporizer.
The resulting gas flows to the top of the liquid container, increasing tank
pressure. When the pressure reaches the setting of the regulator, it closes
to prevent further flow of liquid into the systems. When product withdrawal lowers tank pressure below the regulator setting, more liquid ill be
vaporized to maintain tank pressure for continue withdrawal.
Product Withdrawal
Product is normally withdrawn as liquid through a liquid withdrawal line.
Liquid flows through the withdrawal valve to an external vaporizer. When
the pressure building valves are open and tank pressure exceeds the
setting of the economizer valve, gas will flow from the top of the tank
through the pressure building system and the economizer valve to the
liquid withdrawal line. This action interrupts the flow of liquid, allowing gas
to flow through the withdrawal line until tank pressure falls below the
setting of the economizer valve. This economizer action reduces product
losses by allowing the withdrawal of gas that may otherwise be vented.
Safety Devices
Overpressure protection for the liquid container is provided by pressure
relief devices consisting of safety valve and a bursting disk. An optional
Dual Safety Relief Manifold with a three-way diverter valve permits the
operation of one set of protective devices while the other set is isolated for
maintenance. This arrangement prevents all safety devices from being
valved out of the circuit at the same time and permits maintenance of
these devices without the need to blow-don tank pressure.
Initial Filling Safety
The inner container and plumbing of all Taylor-Wharton tanks have been
Cleaned for Oxygen or Hydrogen Service (specification GS38 or GS40
respectively. You should take appropriate measures to assure that only
clean liquid, free of particulate matter, be placed in your container.
Warning
Once a container is placed into Carbon Dioxide or Nitrous Oxide
12
gas service, it should never be placed into any other gas service
.
The tank was pressurized at the factory with nitrogen gas. If the tank
is to be filled with any other product, the nitrogen gas must be purged
from the tank. Purge with product gas until analysis indicates acceptable
purity.
Caution
To avoid injury, do not touch fill hose or connections with bare hands.
During filling, these parts are cooled extremely low temperatures. See
Safety Precautions for recommended protection.
Nitrogen Purge
Before placing tank in service, determine container contents impurity level
with one of the following instruments:
§ Meeco Moisture Analyzer
§ Alnor Dewpoint Analyzer
§ Model 210-S Gow-Mac Gas Master Hydrogen Analyzer
§ A Bulb tester for measuring Oxygen in Nitrogen or equivalent
If container contents purity is unacceptable, perform a nitrogen purge to
reduce contaminants.
Nitrogen Precool
A large quantity of product is lost due to flash-off when a warm container
is filled with liquefied gases. To minimize loses, precool the tank container
with nitrogen before filling with highly combustible or more expensive
liquefied gases. The residual nitrogen gas should be removed from the
container and piping by a pressure purge. The tank may then be filled with
service product.
Caution
Do not exceed liquid weight quantity specified for the tank. Container
supports could be damaged by the increased weight of the liquid.
13
Maintenance Safety
Never allow persons that are not adequately trained and properly supervised to attempt maintenance or operation of this equipment.
Follow all safety precautions in this booklet and cited reference publications when making repairs to this cryogenic storage tank. If combustible
gases are present, make certain system pressure is relieved and the liquid
container and all piping are drained and purged with nitrogen before
making any repairs requiring use of welding equipment or other ignition
source. If hydrogen is present in any part of the system and repairs
require use of an ignition source, isolate piping requiring repairs and
provide a continuous purge of nitrogen gas through the isolation section.
Use spark free tools made of brass or aluminum if the presence of
hydrogen is suspect.
Maintain a permanent record of all inspectors, vacuum measurements
and system repairs. If equipment does not operate properly, stop work
immediately and investigate cause of malfunction. Field repair to instruments and controls must be made by a qualified instrument specialist.
Use only approved replacement parts suitable and cleaned for cryogenic
oxygen or hydrogen service.
Warning for O2 System Users
Residue of leak detectors solutions can be flammable. All surfaces to
which the leak detector solutions have been applied must be adequately
rinsed with potable water to remove all traces of residue. Reference CGA
G-4.4 Section 4.9 (see page 15).
After making repairs requiring disassembly or part replacement, leak test
all valves and piping joints that were taken apart and reconnected. Use
Sherlock 5-Second Leak Detection Solution, Type CG concentrate,
obtainable from Winston Products Company, Inc.
Warning
A small amount of gas may leak from around the adjusting screws while
regulator caps are removed. Take precautions to prevent sparks or other
sources of ignition in the vicinity of the regulators in combustible gas
service while adjustments are being made.
14
Casing Safety Device
When the safety device has ruptured or leakage is caused by corrosion or
other damage, the safety device assembly must be replaced
Warning
Do not start any cutting of welding work until gaseous concentration in the
insulation space has been checked for combustibles. If necessary, purge
insulation space with dry nitrogen gas until combustible gases have been
eliminated. Do not allow pressure in the insulation space to exceed the
pressure in the inner container. External overpressure on the inner container could cause permanent damage.
Because re-evacuation is time consuming and usually
requires taking the tank out of service, it is not normally
attempted until tank performance becomes unacceptable.
Even a relatively high degree of deterioration can be
tolerated in a tank from which high rates of withdrawal
are being made. However, if vacuum deterioration
seriously affects tank operation by producing excessive
pressure buildup and high loss rates, re-evacuation may
be warranted.
Note
Do not use Teflon tape as a sealant on vacuum system fittings
Moving the Tank
When moving a tank from another location after being in cryogenic service,
be sure that the tank is empty and warm. If the tank has been in oxygen or
hydrogen service, purge it warm filtered nitrogen gas to eliminate any
residual combustible gas. To prevent contamination from atmospheric
moisture, pressurize the tank to approximately 20 psig (138 kPa/1.4 bar)
with filtered nitrogen gas and close all valves to retain pressure.
Vertical tanks should be shipped in the horizontal position on wooden
cradles. Shipping drawings may be purchased from the Theodore, Alabama
factory. Give tank model and part numbers when requesting drawings.
15
PAMPHLET INFORMATION
The following pamphlets can be ordered from the Compressed Gas
Association
§ Pamphlet P-12:Handling Cryogenic Liquids
§ Pamphlet G-4.1:Cleaning Equipment for Oxygen Service
§ Pamphlet G-6: Carbon Dioxide
§ Pamphlet G-8.2: Standard for Nitrous Oxide
§ Pamphlet G-4.4: Industrial Practices for Gaseous Oxygen Transmis-
sion and Distribution Piping Systems
Compressed Gas Association, Inc.
1235 Jefferson Davis Highway
Arlington, VA 22202 USA
The following pamphlets can be ordered from the National Fire Protection
Association:
§ NFPA Standard No. 50: Bulk Oxygen Systems at Consumer Sites
§ NFPA Standard No. 50B: Liquefied Hydrogen Systems at Consumer
Sites
National Fire Protection Association
Battery Marew Park
Quincy, MA 02269 USA
Taylor-Wharton Asia (M) Sdn. Bhd.
Taylor-Wharton
P.O. Box 568
Theodore, AL 36590-0568 USA
Phone: (334) 443-8680
(800) TW TANKS (898-2657)
Fax: (334) 443-2250
Lot No. PT 5076 & PT 5077
Jalan Jangur 28/43
Hicum Industrial Estate
P.O. Box 7193
Pejabat Pos Besar
40706 Shah Alam,
Selangor Darul Ehsan,
Malaysia
Phone: (603) 511-3003
Fax: (603) 511-1472
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