1. Whether the valve and pipeline are leaking, whether the shell is frosted or sweating.
2. Whether all valves are in normal opening and closing state.
3. Whether the instrument (level gauge, pressure gauge) is working normally, and whether the DCS display parameters are consistent with the on-site primary meter.
4. Whether the pressure of the storage tank is normal. When the pressure is close to or equal to the maximum pressure, the vent valve needs to be opened to relieve the pressure.
5. Whether the liquid filling rate exceeds 95%.
6. For atmospheric powder insulation storage tank, whether the sealing gas is normal. (50mmH2O)
7. It is strictly forbidden to place flammable and explosive materials and all sundries near the liquid oxygen storage tank.
8. Fireworks are strictly prohibited near the liquid oxygen storage tank.
9. The acetylene and total hydrocarbon content in the liquid oxygen in the storage tank shall be tested at least once a week, and the acetylene content shall not exceed 0.1×
10-6(v/v), when exceeding, liquid oxygen must be discharged in time for replacement treatment.
10. Whether the liquid oxygen storage tank is well grounded.
11. If it is not used for a long time, ensure that there is a certain amount of liquid in the tank, so as not to re-cool the replacement tank and use it for a long time.
12. Whether the outriggers are damaged, whether the foundation is sinking, tilted, or cracked, whether the fastening bolts are in good condition, and whether the tank body is deformed.
13. Regularly check the vacuum degree of the storage tank.
