What are the safety precautions for handling a liquid dewar cylinder?

When handling a liquid dewar cylinder, it is essential to follow proper safety precautions to ensure the safety of yourself and those around you. Here are some general guidelines to consider:

Personal Protective Equipment (PPE): Wear appropriate PPE, including safety goggles or a face shield, gloves, and protective clothing, to protect yourself from potential hazards.

Training: Obtain proper training on the handling and use of liquid dewar cylinders. Familiarize yourself with the specific procedures and guidelines provided by the manufacturer.

Ventilation: Ensure that the work area is well-ventilated to prevent the accumulation of hazardous vapors. Avoid working in confined spaces without proper ventilation.

Secure Transportation: When moving a liquid dewar cylinder, use a suitable hand truck or cart specifically designed for the purpose. Secure the cylinder in an upright position to prevent tipping or falling.

Avoid Physical Damage: Handle the dewar cylinder with care, avoiding rough handling or dropping. Physical damage to the cylinder can result in leaks or other hazards.

Pressure Release: Never attempt to remove the pressure relief devices or tamper with the safety features on the dewar cylinder. These devices are essential for maintaining safe pressure levels.

Avoid Contact: Do not touch the cold surfaces of the dewar cylinder directly with your bare skin. Use gloves or other insulating materials to protect yourself from cold burns or frostbite.

No Open Flames: Keep the liquid dewar cylinder away from open flames or other ignition sources. Cryogenic liquids are highly flammable, and contact with an ignition source can lead to fire or explosions.

Storage Considerations: Store liquid dewar cylinders in a well-ventilated, secure area away from incompatible substances, flammable materials, or sources of heat. Follow the manufacturer's guidelines for proper storage.

Emergency Procedures: Familiarize yourself with the emergency procedures in case of a spill, leak, or other accidents involving the liquid dewar cylinder. Have access to emergency eyewash stations, safety showers, and fire extinguishing equipment.


Welded insulated liquid dewar cylinder



Dewar has two main advantages: The first is that it can hold large quantities of gas at relatively low pressures compared to compressed gas cylinders. The second is that it provides an easily manipulated source of cryogenic liquid. Due to the firmness and reliability of the Dewar cylinder, its long holding time, and its own gas supply system, the built-in vaporizer can continuously output normal temperature gas (oxygen, nitrogen, argon) with a flow rate of up to 10m3/h, and the high constant output pressure of the gas reaches 1.2Mpa (Medium pressure type) 2.2Mpa (high pressure type), fully meet the gas requirements under normal circumstances