Precautions for Helium Storage
1. The pressure is usually 15 MPa. When using it, use a pressure reducer such as YQY-12 or 152IN-125 to reduce the pressure. Use soap water to check the gas pipeline before use to ensure that the gas pipeline is not leaking.
2. Ensure that helium is not leaked and the workplace is kept ventilated. When the helium content increases and the oxygen content is lower than 19.5%, the patient first appears to have faster breathing, lack of concentration, and ataxia; followed by fatigue, irritability, and restlessness. , Nausea, vomiting, coma, convulsions, and death.
3. When the exhaust gas of each bottle of helium is used, the residual pressure in the bottle should be kept at 0.5MPa, and the minimum residual pressure should not be lower than 0.25MPa. The valve of the bottle should be closed to ensure the gas quality and use safety.
4. Bottled helium should be sorted and stacked during transportation, storage, and use. It should not be placed near open flames and heat sources. It should be kept away from fire, exposed to oil and wax, exposed to the sun, not thrown away, and not bumped. For arc starting or arcing, brutal loading and unloading is strictly prohibited. Short-distance moving helium cylinders should use special carts for cylinders. Long-distance moving cylinders should be transported by dangerous goods transport vehicles. The temperature of liquid helium is 4.25K, which can cause severe frostbite when in contact with the skin.
5. The use and inspection of steel cylinders for helium storage shall be in accordance with the provisions of the "Cylinder Safety Supervision Regulations" of the State Bureau of Quality and Technical Supervision, and the cylinder inflation pressure shall not exceed the prescribed pressure. Safety helmets must be installed at all times, a protective gas valve, gas cylinders are inspected every three years (except for special cases) for appearance inspection and hydrostatic test. They can be used again after passing the test. The inspection is performed in the inflation unit.