1.Before filling the liquid nitrogen, the first step is to check whether the tank is sunken, vacuum exhaust port is in good condition or not. If demaged or broken, the vacuum will reduce, then the tank cannot keep insulation, then the top of the tank will form frost, the tank will not be used any more.
2.Liquid nitrogen container mouth can not be sealed, liquid nitrogen stored in liquid nitrogen container, we should pay attention to the liquid nitrogen container mouth to retain a certain gap, otherwise, because liquid nitrogen gasification when the gas can not be discharged in time, it is easy to cause explosion accidents. There is a certain gap in the general liquid container , when in use, do not be artificially blocked.
3 To check the inside of the tank, if there is any foreign body, must be removed to prevent corrosion of the liner.For the new tank or the tank in a dry state must be slowly filled and pre-cooling, to prevent too much damage from the liner, reduce the useful life.
4.Avoid any collision and beat when use, so as not to damage high vacuum state of the tank.Prohibit use storage tank as transport tanks when shipping. If need long-distance transport of liquid nitrogen, please choose transport liquid nitrogen tank.
5.Prohibit to use sealed stopper to cover entrence, avoid the continued evaporation of liquid nitrogen to form nitrogen, easily lead to increased pressure and cause accidents.
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