Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class and GC2/Class pressure pipeline installation licenses, as well as a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council unit of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
Operation procedures for liquid oxygen storage tanks should be established based on specific tank design and usage requirements. The following are some common contents of general operation procedures for liquid oxygen storage tanks: - Operator Training: Ensure operators have received relevant training on liquid oxygen storage tanks, understanding the tank's structure, performance, operation procedures, and safety precautions. - Safety Inspections: Conduct necessary safety checks before operating the liquid oxygen storage tank, including inspecting the tank's integrity, the sealing of valves and pipelines, and the condition of the insulation layer. - Liquid Oxygen Supply: Ensure the liquid oxygen supply system is functioning properly, including checking the status of the supply pipelines, valves, and pressure gauges, and ensuring an adequate supply of liquid oxygen. - Tank Pressure Control: Monitor the pressure in the liquid oxygen storage tank to ensure it remains within a safe range. If necessary, control the tank's pressure by adjusting pressure valves or pressure relief devices. - Leak Control: Regularly inspect the tank and pipeline seals to ensure there are no leaks. If a leak is detected, take immediate measures to control the leak and notify relevant personnel. - Fire Prevention Measures: Prohibit open flames and prevent sparks and high-temperature objects from contacting the tank. Establish fire prevention facilities and fire extinguishing equipment, and regularly inspect and maintain them. - Safety Distance: Maintain a certain safety distance around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. - Maintenance and Repair: Regularly perform maintenance and repairs on the tank, including cleaning the tank, inspecting the insulation layer, valves, and pipeline conditions, to ensure the tank operates normally. - Waste Disposal: Properly dispose of waste generated by the liquid oxygen storage tank, including liquid oxygen residues, waste gases, and waste liquids, following relevant environmental protection regulations and standards. Note that operation procedures for liquid oxygen storage tanks should be established based on specific tank design and usage requirements, and should comply with applicable regulations, standards, and safety guidelines. When operating liquid oxygen storage tanks, cooperation with local regulatory agencies and individuals should be ensured to guarantee the tank's safety and reliability.

To avoid hazards caused by static electricity in liquid oxygen tanks, the following measures can be taken:
Ensure proper grounding of the liquid oxygen storage tank and associated equipment. Grounding discharges static electricity to the ground, reducing the likelihood of static buildup. Metal components such as tanks and pipelines should be connected to a reliable grounding system.
Static dissipative materials: Utilize static dissipative materials to reduce the accumulation of static electricity. For instance, apply conductive coatings or materials on the insulating layer of liquid oxygen tanks and pipelines to discharge static electricity to the ground.
Antistatic Equipment: Utilize antistatic equipment, such as static-conductive pipes and hoses, to reduce the accumulation and discharge of static electricity. These devices help direct static to the ground, minimizing the occurrence of static sparks.
Static grounding wire: Install static grounding wires on liquid oxygen storage tanks and related equipment to discharge static electricity to the ground. These grounding wires should be connected to a reliable grounding system and be inspected and maintained regularly.
Static Eliminators: Utilize static eliminators to dissipate static electricity. These devices neutralize static by releasing opposite charges, reducing the buildup of static and the occurrence of sparks.
Electrostatic Safety Training: Conduct electrostatic safety training for personnel using liquid oxygen storage tanks to enhance their understanding and awareness of electrostatic hazards. The training content may include the principles of electrostatic formation, preventive measures, and emergency response procedures.
It should be noted that the static control measures for liquid oxygen storage tanks must be designed and implemented by personnel and adhere to relevant safety operating procedures and standards. During operation, strict adherence to the prescribed operational procedures is required to avoid the generation of static sparks, ensuring the tank's

The oxygen-filling process for liquid oxygen tanks must adhere to specific operational procedures and safety measures. Below are the steps for filling a liquid oxygen tank:
Preparation: Ensure the tanks and oxygen-filling equipment are in good working condition, check the tank's sealing integrity and the proper functioning of the safety valves.
Connect equipment: Attach the oxygenation equipment to the tank, ensuring a reliable and sealed connection.
Prepare liquid oxygen: Transfer liquid oxygen from the storage container to the oxygen storage tank of the oxygenation equipment. During the transfer, be cautious to avoid any leakage or contact with the liquid oxygen.
Oxygen Filling Operation: Open the filling valve of the oxygen filling equipment and transfer liquid oxygen from the storage tank into the filling tank. During the filling process, control the filling speed and pressure to avoid excessive pressure and temperature rise in the storage tank.
Monitoring and Control: During the aeration process, it is necessary to monitor the tank's pressure and temperature to ensure they remain within safe limits. In case of any abnormalities, the aeration should be stopped immediately and appropriate measures should be taken.
Oxygen Filling Completed: Once the tank reaches the required oxygen filling level or pressure, close the valve of the oxygen filling equipment and stop the filling operation.
Safety Handling: After the oxygenation is complete, safety handling is required, including closing relevant valves and draining any remaining liquid oxygen from the oxygenation equipment.
Note that liquid oxygen is highly oxidizing and flammable. The oxygen filling process must strictly adhere to relevant safety operating procedures and standards. Operators should receive training and strictly follow the operational procedures and safety measures to ensure the safety and reliability of the filling process.

The safety distance between liquid oxygen storage tanks and buildings is typically specified by relevant safety standards and regulations to ensure a safe distance and fire separation between the tank and the building. The following is a reference for the general safety distance between liquid oxygen storage tanks and buildings:
Horizontal Interval: The horizontal interval between the liquid oxygen tank and the structure is typically required to maintain a certain distance to prevent the tank from causing danger to the structure in case of leakage or accidents. The specific distance should be determined based on factors such as the tank's capacity, pressure, and the nature of the structure, with a general recommendation to maintain a safe distance.
Vertical spacing: The vertical spacing between the liquid oxygen storage tank and the structure must also comply with relevant safety requirements. This is to prevent the tank from causing danger to the structure in case of leakage or accidents. Specific spacing requirements will be determined based on factors such as the tank's capacity, pressure, and the height of the structure, generally recommending maintaining a certain safety distance.
Fire Protection Distance: Liquid oxygen has a high oxygen content and flammability, and in the event of a leak or accident, it may cause a fire. Therefore, a certain fire protection distance must be maintained between the liquid oxygen storage tank and the building to ensure that the fire does not spread or pose a danger to the building. Specific fire protection distance requirements
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