The Dewar Co2 Tank Storage vacuum is damaged and there is internal leakage.
Phenomenon
There is no insulation, the pressure rises rapidly after liquid filling, a large area of frost forms on the surface, the bursting disc damages the exhaust, and the bottle body has the risk of mechanical explosion.
Treatment
Disperse surrounding people, open the inlet and outlet valves to drain water, open the exhaust valve to exhaust, and replace the gas in the tank first to avoid personal accidents. Maintenance Treatment: Repair.
Treatment
If it leaks, open the outer tank, replace the wrapping material, replace palladium oxide, molecular sieve, weld the outer tank to restore, and vacuum from the beginning to a vacuum of ≤6.4×10-3Pa.
Bulk Co2 Storage Tank, Dewar vacuum failure
Phenomenon: The outer gallbladder is frosted, the hand temperature is lower than the ambient temperature, and it actively exhausts after being left for one day.
Treatment: Drain the remaining air as soon as possible and send it for repair. Internal leakage and helium mass spectrometry leak detection should be performed.
If there is internal or external leakage, it should be repaired according to the above method. If there are no internal leaks, heating and vacuum processing will need to be started from scratch. If the service life is long, the internal materials should be replaced.
Damage to safety accessories
The bursting disc is damaged. Check the factors to see if there is large area of frost. If any, check and deal with internal leaks and external leaks. If there is no local condensation or frost, it is recommended to replace the bursting disc first and observe the pressurization speed after filling.
If the pressurization is rapid, vacuum issues should be considered. If the pressurization is normal, it is caused by the aging of the bursting disc.
The pressure gauge is damaged, replace it with a new one.
The safety valve is leaking, replace it with a new one.
The liquid level gauge is damaged, replace it with a new one.
The valve is not closed tightly and is leaking. Replace the valve core.
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