Dewar handling and unloading rules

Dewar is a stainless steel pressure vessel with super vacuum insulation. It is a gas cylinder designed for storage, transportation and use of liquid oxygen, liquid nitrogen, liquid argon or carbon dioxide. It is used for reliable and economical transportation and storage of low-temperature liquid gas, and in-situ storage and supply of low-temperature liquid gas in a wide range of applications. Compared with compressed gas cylinders, it can hold a large amount of gas at a relatively low pressure. Dewars provide a source of cryogenic liquid that is easy to handle.
　　
In order to reduce the loss during transportation, when handling and unloading the Dewar, we have to implement the following rules:
　　 1. When carrying gas cylinders, a trolley, crane or overhead crane should be used.
　　
        2. Do not move the pressure vessel by twisting the protective ring, otherwise it may easily overturn the gas cylinder and cause personal injury and equipment damage.
　　
        3. The gas cylinder must be kept upright during operation to avoid tipping.
　　
        4. Never allow the Dewar to be rolled horizontally.         5. When transporting gas cylinders to the truck, use a lift or crane to load the gas cylinders onto the truck.
       
        6. After the pressure vessel is mounted on the truck, use nylon straps to fix the position. Do not use chains to fix it. It is easy to damage the surface of the Dewar due to the fixed chain, and even damage the vacuum.