Precautions for operation of liquid argon cryogenic storage tank

precautions for operation of liquid argon cryogenic storage tank:

1. Before the low temperature liquid argon storage tank is switched, the pressure should be the same. When the liquid argon cryogenic storage tank is switched, it should be arranged in the adjacent or the same group of liquid argon storage tanks as much as possible.

2. When filling liquid argon cylinder, operators shall wear masks, anti-static overalls, anti freezing gloves, etc.

3. When unloading the liquid argon tank car, it is strictly prohibited to move the car to avoid breaking the loading and unloading hose, resulting in a large amount of liquid argon leakage.

4. When there is liquid argon in the tank pipeline, the valves at both ends cannot be closed at the same time.

5. When filling the liquid argon cylinder in summer, the operator shall take skin care measures for the face and neck to prevent the skin from being burned by heat radiation.

6. It is strictly prohibited to knock, bake with fire and spray the frozen parts of argon cryogenic storage tank with water.

7. During the operation of liquid argon cryogenic storage tank, the liquid level shall be no less than 15%.

8. When the tank self pressurization system is operated manually, it is strictly prohibited to leave the site.

9. When the self pressurization system of liquid argon cryogenic storage tank is put into operation, the decompression system shall be closed Maintenance method of liquid argon storage tank:

Check the neck plug and neck plug groove at any time, remove the ice on the neck plug in time, and do not place plastic cloth or other materials on the neck plug, increase the sealing ability, and ensure the operation function of liquid argon low temperature storage. When it is found that the consumption speed of liquid argon cryogenic storage tank is too fast or there are water drops and white frost near the neck of liquid argon storage tank, it means that the insulation function of cryogenic storage tank is out of order and liquid argon can not be preserved.

The samples placed in liquid argon storage tank shall be marked, and shall be stable, accurate and fast. The inner cavity of liquid argon cryogenic storage tank shall be cleaned once a year to prevent corrosion to the tank wall. Before cleaning, the liquid argon in the tank shall be drained and stored indoors for 2-3 days before preheating to room temperature. After that, the tank shall be washed and wiped with neutral washing powder and then washed with clean water for cleaning and drying control. The temperature of cleaning liquid and clean water shall not exceed 40 ℃ to avoid overheating affecting the function of liquid argon cryogenic storage tank.