Proper Storage: Securing and Upright Position

Welcome back, let's Build Smart & Build Safe! Yesterday, we established the three hazards of compressed gas cylinders. Today, we focus on the physical security of these cylinders, which is the most critical step in preventing them from falling or becoming an unguided missile.

1. Upright Position (Vertical)

Compressed gas cylinders must always be stored, handled, and used in an upright (vertical) position.

• Why Vertical? For cylinders containing liquefied gas (like propane or CO2), standing them upright ensures that the gas, not the liquid, is discharged first. For gases like acetylene, keeping the cylinder vertical ensures the internal filler material remains properly saturated, which stabilizes the gas.

• The Risk: Laying a cylinder on its side can disrupt the internal contents and create an unsafe pressure release when the valve is opened.

2. Securing (Chaining/Strapping)

The moment a cylinder is brought onto the job site, it must be secured to prevent it from being tipped or knocked over. An unsecured cylinder is a serious physical hazard and a potential missile risk.

• Secure to a Stable Support: Cylinders must be chained, strapped, or caged to a stable object, such as a sturdy cylinder cart, a dedicated storage rack, or a wall or structural column.

• Use Proper Materials: Use non-combustible chains or heavy-duty straps (not rope or flimsy twine). The chain should be positioned two-thirds of the way up the cylinder to provide maximum stability and prevent slippage.

• Never Rely on the Regulator: Never rely on a regulator or the attached hose to hold the cylinder upright. The moment the hose is pulled or the connection is stressed, the cylinder can fall.

In-Use Security

Even when in use (e.g., during welding), the cylinder must be secured to the cylinder cart or a stable structure. When transporting, use the dedicated wheeled cart and ensure the cylinder is chained to the cart before moving it.

Tomorrow, we'll cover storage segregation: keeping fuel gases away from oxygen and ignition sources.

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-The Safety Man