What is an important procedure for the safe storage and handling of oxygen and acetylene cylinders?

Chaining the cylinders upright to prevent them from falling over is vital for the safe storage and handling of oxygen and acetylene cylinders. These cylinders are under high pressure, and if they fall, there is a risk that the valve could break off, leading to cylinder damage or gas release that could result in serious accidents, including explosions. By securing the cylinders in an upright position, the likelihood of them tipping over is significantly reduced, ensuring a safer working environment.

While keeping cylinders in a locked room does provide some security, it does not address the immediate safety concerns associated with the stability and potential hazards of falling cylinders. Using a hammer to open a cylinder valve poses a danger to both the operator and the cylinder itself, as it can easily damage the valve, leading to uncontrolled gas release. Closing the vents in the storage area could create a buildup of gases, which is hazardous. Thus, securing the cylinders upright is the most critical procedure for their safe handling and storage.