Taylor-Wharton XL-240 User Manual

Instructions for

XL-160 and XL-180

TW-72

Do not attempt to use or maintain this
unit until you read and understand these
instructions. Do not permit untrained
persons to use or maintain this unit. If
you do not fully understand these instruc­tions, contact your supplier for further
information.

Contents

Container Safety ....................................................................... 1

General Information .................................................................. 2

Specifications ............................................................................ 2

Operation...................................................................................4

Component Descriptions............................................. 4

Withdraw Liquid from the Container ........................... 5

Filling the Container .................................................... 5

Fill Hose Kits ............................................................... 6

Maintenance .............................................................................. 8

Checking Container Performance ................................ 8

Hand V alve Repair ....................................................... 9

Shock Mount Foot Ring .............................................. 9

Full V iew Contents Gauge Maintenance...................... 1 0

T r oubleshooting ........................................................................ 13

Replacement Parts .................................................................... 14

Accessories 14

Pressure Hazard – The containers covered by this literature contain liquefied gas
under pressure. Sudden release of this pressure may cause personal injury by
issuing cold gas or liquid, or by expelling parts during servicing. Do not attempt any
repairs on these containers until all pressure is released, and the contents have
been allowed to vaporize to ensure no pressure buildup can occur.

Extreme Cold – Cover Eyes and Exposed Skin – Accidental contact of the skin or
eyes with any cryogenic liquid or cold issuing gas may cause a freezing injury
similar to frostbite. Protect your eyes and cover your skin when handling the con­tainer or transferring liquid, or in any instance where the possibility of contact with
liquid, cold pipes, and cold gas may exist. Safety goggles or a face shield should be
worn when withdrawing liquid or gas. Long-sleeved clothing and gloves that can be
easily removed are recommended for skin protection. Cryogenic liquid is extremely
cold and will be at temperatures below -300° F (-184°C) under normal atmospheric
pressure.

Keep Equipment Well Ventilated – Although the gases used in these containers
are non-toxic and non-flammable, they can cause asphyxiation in a confined area
without adequate ventilation. An atmosphere that does not contain enough oxygen
for breathing can cause dizziness, unconsciousness, or even death. These gases
cannot be detected by the human senses and will be inhaled normally as if they
were air. Ensure there is adequate ventilation where these gases are used and store
liquid containers outdoors or only in a well ventilated area.

Replacement Parts Must be Clean to Prevent Contamination – Use only Taylor­Wharton recommended spare parts, and be certain parts used are properly cleaned
to prevent contamination of stored product. For information on cleaning, consult the
Compressed Gas Association (CGA) pamphlet1 G-4.1, “Cleaning for Oxygen
Service” or equivalent industrial cleaning specifications.

Container
Safety

NOTE:

For detailed information on teh
handling of cryogenic liquids, refer
to the Compressed Gas Association
publication(1): P-12 “Safe Handling
of Cryogenic Liquids.”

Install Relief Valves in Cryogenic Liquid Lines – When installing or fill hose
assemblies, make certain a suitable safety relief valves is installed in each section
of plumbing between shut-off valves. Trapped liquefied gas will expand as it warms
and may burst hoses or piping causing damage or personal injury.

1

Available from the Compress Gas Association, 1235 Jefferson Davis Highway,

Arlington, VA 22202.

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General
Information

Specifications

The XL-160 and XL-180 are vacuum insulated, stainless steel containers designed to
store, transport, and dispense cryogenic liquid nitrogen. Built to DOT 4L standards,
these containers may be used for over-the-road transportation, as well as on-site
storage and supply.

Dimensions (Nominal)
Diameter
Height

Weight
Empty 197 lb. (89 kg) 205 lb. (93 kg)

Approximate Weight of Contents
(Nitrogen) in 22 psig (1.5 bar/152
kPa) Service

Capacity, Gross 163 liters 186 liters

Capacity, Useable Liquid 160 liters 180 liters

Normal Evaporation Rate* (%
Capacity per Day)
Nitrogen 1.3% 1.25%

Relief Valve Setting 22 psig

Inner Container Bursting Disc 176 psig

Design Specifications
T/DOT
Rated Service Pressure

Specifications are subject to change without notice.
*Vented N.E.R. based on Useable Li

20 in. (508 mm)
57 5/8 (1464 mm)

259 lb. (117 kg) 296 lb. (134 kg)

(1.5 bar/152 kPa)

(12 bar/ 1214 kPa)

4LM/4L
100 psig
(6.9 bar/ 690 kPa)

uid Capacit

XL-160 XL-180

20 in. (508 mm)
64 3/8 in. (1635 mm)

22 psig
(12 bar/1214 kPa)

176 psig
(12 bar/1214 kPa)

4LM/4L
100 psig
(6.9 bar/690 kPa)

Handling the Container

XL Series containers are very rugged liquid cylinders. All cryogenic liquid containers
have an inner container and on outer container with an insulated vacuum space
between them; any abuse (dents, dropping, tip-over, etc.) can affect the integrity of
the container’s insulation system.

When fully loaded, the XL-180 in nitrogen service will contain up to 296 lb. (134 kg)
of product. While moving a full container, you may be handling up to 501 lb. (227 kg),
and you should treat the load accordingly. The attachment points provided on the Xl­160/XL-180 will allow you to use a hand truck, or a hoist, to handle these loads
properly. Do not attempt to move these cylinders by any other means. When moving
the cylinder, the following precautions should be observed:

 Never lay the container on its side. Always ship, operate, and store the

unit in a vertical or upright position.

 When loading or unloading the container from a truck, use a lift gate, a

crane, or a parallel loading dock. Never attempt to manually lift from the
unit.

 To move the container over rough surfaces or to life the container, attach

an appropriate sling to the lifting points cut into the welded support posts,
and use a portable lifting device that will handle the weight of the con­tainer.

Freight Damage Precautions

XL-160 and XL-180 Liquid Cylinders

Any Freight Damage claims are
your responsibility. Cryogenic

liquid containers are delivered to
your carrier from Taylor-Wharton’s
dock in new condition. When you
receive our product you may
expect it to be in that same
condition. For your own protec­tion, take time to visually inspect
each shipment in the presence of
the carrier’s agent before you
accept delivery. If any damage is
observed, make an appropriate
notation on the freight bill. Then
ask the driver to sign the notation
before you receive the equipment.
You should decline to accept
containers that show damage
which may affect service ability.

Operation

The model numbers of XL-160/XL-180 indicate their respective liquid storage capacities
in liters of product. Both cylinders are designed for liquid nitrogen service only. The
following component and circuit descriptions are pertinent to either container and should
be read before attempting operation. The components may be identified on the Compo­nent Location illustration.

XL-160/XL-180 Component Locations

The Liquid Valve - Liquid product is added or withdrawn from the con­tainer through the connection controlled by this valve. It has the CGA
fitting that is required for liquid connections.. The valve is opened for fill
or liquid withdrawl after connecting a transfer hose with compatible fittings
to the LIQUID line connection.

The Pressure Gauge - Thepressure gauge dsplays teh internal container
pressure in pounds per-square-inch, bar or in kiloPascals.

The VENT Valve - This valve controls a line into the head space of the
container. It is used during thet fill process. the VENT valve is opened to
vent the head space area while liquid is entering the inner container
during a pressure transfer fill through the LIQUID valve.

The Full View Contents Gauge - The container contents gauge is a float
type liquid level sensor that indicates container liquid content through a
magnetic coupling to a yellow indicator band. This gauge is an indication
of approximate container contents only and should not be used for filling.

Relief Devices - These cylinders have inner container relief valves set at
22 psig (1.5 bar/152kPa) and inner container bursting disc that will rupture
at 176 psig (12 bar/1213)

XL-160/XL-180 Flow Diagram