Whether you're picking up oxygen for a cutting job, shielding gas for your welder, or another compressed gas from Maine Oxy, taking the right precautions helps protect you, your vehicle, and everyone around you.

Compressed gas cylinders are designed to safely contain gases under pressure, but they must be handled and transported properly. An unsecured cylinder can shift, roll, fall, damage its valve, or create other serious hazards during transportation.

Before you leave a Maine Oxy location with a cylinder, here are some important things to know.

How Should Gas Cylinders Be Transported?

Gas cylinders should be properly secured so they cannot roll, slide, tip, or move during transportation, including during sudden stops, turns, or other unexpected vehicle movement.

When transporting cylinders:

• Secure every cylinder against movement. Use an appropriate cylinder rack, carrier, strap, chain, or other securement method designed to keep the cylinder from shifting during transportation.
• Keep cylinder valves closed. Cylinders should not be transported with regulators, torches, hoses, or other equipment connected unless specifically permitted for the application.
• Protect the cylinder valve. When a removable protective valve cap is provided for the cylinder, it should be securely in place during transportation.
• Use an open or well-ventilated vehicle whenever possible. A pickup truck or other vehicle that separates cylinders from the passenger compartment is preferable to transporting cylinders inside an enclosed passenger vehicle.
• Know what you're carrying. Different gases present different hazards. Always read the cylinder label and understand the basic hazards associated with the product you are transporting.

Never allow a cylinder to roll freely in the bed of a pickup truck, trunk, cargo area, or passenger compartment.

Why Is Securing a Gas Cylinder So Important?

Compressed gas cylinders can be heavy, and their contents are stored under significant pressure. An unsecured cylinder can become a serious hazard during a sudden stop, sharp turn, collision, or other unexpected vehicle movement.

Damage to the cylinder valve is particularly serious. If a cylinder falls and its valve is damaged, it can potentially result in an uncontrolled release of the cylinder's contents.

Proper securement helps protect the cylinder, your vehicle, and the people around you.

Can I Transport a Gas Cylinder in My Car or SUV?

Whenever possible, compressed gas cylinders should be transported in a vehicle that provides adequate ventilation and separates the cylinders from the passenger compartment. Transporting cylinders inside an enclosed passenger vehicle can increase the consequences of a leak.

Depending on the gas involved, a leak could:

• Displace oxygen and create an asphyxiation hazard.
• Enrich the atmosphere with oxygen and greatly increase the risk and severity of fire.
• Create a flammable atmosphere.
• Expose occupants to other hazards associated with the specific gas.

A pickup truck, open trailer, or appropriately designed and ventilated commercial vehicle is generally a better transportation option.

Never assume that a cylinder is safe to transport unsecured simply because the trip is short. Cylinders should be properly secured every time they are transported.

Can Gas Cylinders Be Transported Lying Down?

There isn't one answer that applies to every gas product or cylinder. Transportation requirements and recommended orientation can vary depending on the gas and type of container.

Acetylene, liquefied gases, cryogenic liquids, and other products may require additional precautions that do not apply to a typical compressed inert gas cylinder.

If you're unsure how a particular cylinder should be transported, ask a Maine Oxy team member before leaving the store. We'll help you understand the appropriate handling and transportation practices for the product you're purchasing.

What About Oxygen Cylinders?

Oxygen is not flammable, but it supports combustion. An oxygen-enriched atmosphere can cause materials to ignite more easily and burn much more rapidly than they would under normal conditions.

When transporting oxygen cylinders:

• Keep cylinders properly secured.
• Keep cylinder valves closed.
• Protect valves from damage.
• Keep oil and grease away from oxygen equipment.
• Keep oxygen away from ignition sources and combustible materials.
• Avoid transporting cylinders in an enclosed passenger compartment whenever possible.

If an oxygen cylinder leaks inside an enclosed vehicle, the resulting oxygen-enriched atmosphere could significantly increase the fire hazard.

What About Acetylene and Other Flammable Gases?

Flammable gases require additional precautions. Acetylene, propane, hydrogen, and other flammable gases can create a fire or explosion hazard if released and allowed to accumulate. Proper ventilation is particularly important when transporting these products.

Keep flammable gas cylinders:

• Properly secured.
• Away from heat and ignition sources.
• Protected from physical damage.
• In an appropriately ventilated transportation area.
• Properly positioned according to the requirements of the specific product and container.

Never smoke or use an open flame around cylinders containing flammable gases.

What About Argon, Nitrogen, and Carbon Dioxide?

These gases may not burn, but that doesn't mean a leak is harmless. Argon, nitrogen, and carbon dioxide can displace oxygen. A release inside an enclosed vehicle can potentially create an oxygen-deficient atmosphere without an obvious warning.

This is another reason proper cylinder securement and vehicle ventilation are important even when transporting a nonflammable gas.

Why Might a Maine Oxy Employee Ask About My Vehicle?

If a Maine Oxy employee asks how you plan to transport your cylinder, we're not trying to make your pickup more difficult. We're trying to make sure you can get it home or to the jobsite safely.

Our team may ask where the cylinder will be placed, how you plan to secure it, or what type of vehicle you're driving. If the proposed transportation method creates a safety concern, we may recommend a different method before loading the cylinder.

There may also be situations where our employees cannot load a cylinder into a vehicle or location that we believe creates an unsafe condition.

Our goal is simple: every cylinder should leave our facility safely and arrive at its destination safely.

Before You Pick Up Your Cylinders

A little preparation can make your trip to Maine Oxy easier. Before arriving, make sure you have an appropriate vehicle and a reliable way to secure the cylinders you're picking up.

Depending on your vehicle and cylinder size, that could include:

• A purpose-built cylinder rack or carrier.
• Appropriate cargo straps.
• Chains or other suitable cylinder restraints.
• An open truck bed or other properly ventilated cargo area.
• Enough space to transport the cylinders without damaging them or other cargo.

If you're unsure whether your setup is appropriate, talk with a Maine Oxy team member before you leave.

Quick Cylinder Transportation Checklist

Before driving away, make sure:

• The cylinder is properly secured against movement.
• The cylinder valve is completely closed.
• The protective valve cap is installed when applicable.
• The cylinder is protected from being struck or damaged by other cargo.
• The transportation area is adequately ventilated.
• You know what gas you're transporting and its primary hazards.
• You're following any product-specific transportation requirements.

If you're unsure about any of these items, ask a Maine Oxy team member. We're happy to help.

Frequently Asked Questions

Safety Starts Before You Leave

Compressed gases are used safely every day in welding shops, fabrication facilities, construction sites, hospitals, laboratories, restaurants, manufacturing facilities, and homes throughout New England and beyond.

Safe use starts with proper handling and transportation.

If you're picking up cylinders from Maine Oxy and have questions about transportation, ask us before you leave. Our team is here to help you understand the product you're purchasing and how to handle it safely.

Safety Resources

This article provides general safety information and is not a substitute for applicable laws, regulations, codes, Safety Data Sheets, manufacturer instructions, or product-specific requirements.

Maine Oxy recommends consulting applicable guidance from the Compressed Gas Association (CGA), U.S. Department of Transportation (DOT/PHMSA), and other relevant regulatory and industry organizations.

Relevant resources include: