Content: Liquid oxygen storage tanks are critical components in various industries, ensuring the safe preservation of cryogenic substances. To operate them securely, adhere to these essential safety precautions:

1. Proper Ventilation and Location: Place liquid oxygen storage tanks outdoors in well-ventilated areas, preferably surrounded by a fence. Maintain a minimum of 5 meters distance from open flames, combustible materials, explosives, and low-lying areas.
2. Grounding and Lightning Protection: Equip tanks with grounding and lightning protection systems to manage static electricity. Grounding resistance should be below 10Ω, and lightning protection resistance should be 30Ω, tested at least annually.
3. Filling Limit: Never exceed a filling rate of 95% capacity to prevent overfilling risks.
4. Pressure Gauge and Safety Valve Maintenance: Regularly inspect and calibrate pressure gauges, ensuring they are free of oil. Safety valves should be made of stainless steel or copper, calibrated periodically, and kept free from oil deposits.
5. Thawing Procedures: When valves, exterior parts, or piping freeze, avoid using open flames for heating. Instead, thaw with nitrogen, air, or hot water at temperatures ranging from 70 to 80°C.
6. No Repair During Filling: Do not attempt repairs when liquid is present in the tank. Allow the tank to warm up to room temperature before conducting any maintenance.
7. Trained Operators: Ensure operators are trained and certified before handling liquid oxygen storage tanks. Operators should wear appropriate clothing, avoiding materials prone to static electricity or oil. Slowly open and close valves during operations, and tightly close booster valves when not in use.
8. Regular Acetylene Concentration Checks: Check acetylene concentration in liquid oxygen regularly (e.g., every 15 days) and maintain it below 0.1×10-6. If concentration exceeds this limit, discharge the liquid oxygen.
9. Pressure Monitoring: When storing liquid oxygen in closed storage, have a designated person monitor pressure to prevent overpressure situations.
10. Skin Protection: Prevent liquid oxygen from coming into contact with unprotected skin to avoid frostbite and other adverse effects.
11. Empty Tank Handling: After emptying a liquid oxygen storage tank, immediately close all valves. The residual low temperature inside the tank can cause wet air to condense and ice up connected pipes if not managed promptly.

Practicing these safety precautions is crucial for the proper handling and maintenance of liquid oxygen storage tanks, ensuring the safety of personnel and the environment.