Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation license, GB2 and GC2 pressure pipeline installation licenses, and mechanical and electrical equipment installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
Proper management regulations for the use of low-temperature liquid storage tanks encompass the following aspects:
Tank Selection and Installation: Choose an appropriate low-temperature liquid storage tank and ensure it complies with relevant standards and regulations. The installation of the tank should be carried out by personnel, following the manufacturer's instructions and requirements, to ensure stability and safety.
Safety Operating Procedures: Establish and implement safety operating procedures for liquid storage tanks, including start-up, shutdown, filling, and venting procedures. Operators must undergo training to understand the characteristics of liquid storage tanks, safety precautions, and emergency response measures.
Safety Equipment and Protective Measures: Tanks should be equipped with necessary safety devices, such as pressure sensors, safety valves, and leak detectors, to monitor and control the pressure and temperature of the tank. Additionally, operators should wear appropriate personal protective equipment, like insulating gloves and protective suits, to ensure their safety.
Regular Inspections and Maintenance: Conduct regular inspections and maintenance on low-temperature liquid storage tanks, including checking the tank's appearance, sealing, and corrosion prevention measures. In case of any issues, promptly repair or replace the tank to ensure its proper operation and safety.
Waste Management: Abandoned low-temperature liquid storage tanks should be disposed of in accordance with relevant environmental protection regulations. The residual liquids in the abandoned tanks should be handled properly to prevent environmental pollution.
Tank Records and Tracking: Establish a tank usage record, including filling dates, filling quantities, usage status, etc. Additionally, it is recommended to implement a tank tracking system for monitoring and managing tank usage and maintenance.
Here are some common management regulations for low-temperature liquid storage tanks. Specific regulations may vary by industry and region. When using low-temperature liquid storage tanks, relevant laws and standards should be adhered to, and appropriate management measures should be established based on the actual situation.

Before using the liquid oxygen tank, the following preparations must be made:
Safety Inspection: Ensure the tank and its surrounding environment are safe. Check for any damage, leaks, or other potential hazards on the tank. Confirm that there are no flammable materials or other hazardous items around the tank.
Tank Preparation: Inspect the tank's exterior, including the shell, welds, valves, and fasteners. Ensure there are no visible damages or corrosion. Check that the insulation layer is intact and undamaged.
Liquid Oxygen Filling: Utilize the liquid oxygen delivery equipment to fill the storage tank. Ensure the flow rate and pressure of liquid oxygen during the filling process are kept within safe limits.
Pressure Control: Storage tanks should be equipped with pressure control devices to ensure the internal pressure of the tank remains within a safe range. Inspect and adjust the pressure control devices to ensure proper operation.
Valve Operation: Check that the tank's valves and connections are functioning properly. Ensure the valves are easy to operate and reliable. Adjust the opening and closing states of the valves as needed.
Safety equipment: Inspect the safety equipment around the storage tank, such as fire separation areas and alarm systems, to ensure they are functioning properly.
Operator Training: Ensure operators are proficient in the safe operation of liquid oxygen tanks.

When selecting insulation materials for low-temperature liquid storage tanks, consider the following factors:
Thermal Conductivity: The lower the thermal conductivity of insulating materials, the better their insulating performance. Therefore, materials with lower thermal conductivity should be chosen, such as polyethylene foam (EPS), polyester foam (PUR), and silicate fibers.
Density: The density of thermal insulation materials also affects their insulating performance. Generally speaking, the higher the density, the better the insulating performance. However, excessively high density may increase the weight and cost of the storage tank. Therefore, a balance must be struck between insulating performance and the requirements of the tank structure.
Corrosion Resistance: Due to the special working environment of low-temperature liquid storage tanks, the insulation material must have excellent corrosion resistance to withstand the侵蚀 by the low-temperature liquid. For instance, glass fiber and silicate fiber offer good corrosion resistance.
Reliability and durability: Insulation materials must possess excellent reliability and durability, maintaining their insulating properties over the long term. Select verified and tested materials to ensure their quality and performance.
Ease of Construction: The ease of installation and maintenance for the thermal insulation material is also a factor to consider. Choosing materials that are easy to install and maintain can improve construction efficiency and reduce costs.
Environmental friendliness: Consider selecting environmentally friendly insulation materials, such as recyclable ones, to minimize the impact on the environment.
Considering these factors, you can select appropriate insulation materials to provide excellent thermal insulation and durability, ensuring the safety and efficient operation of low-temperature liquid storage tanks. When choosing insulation materials, it is recommended to consult with engineers or consulting agencies for more accurate advice and guidance.

The reason for occasional venting of liquid oxygen tanks is primarily to maintain the safe pressure range within the tank and prevent excessive pressure buildup. Here are several situations where liquid oxygen tanks may occasionally vent:
Pressure Control: During operation, the pressure within the liquid oxygen storage tank may change due to evaporation of the liquid oxygen and temperature variations. To maintain a safe pressure range within the tank, regular venting is required to control the tank's pressure within the safe limits.
Prevent Overpressure Accumulation: During oxygen filling or usage, external factors or operational errors may cause the pressure inside the liquid oxygen tank to exceed the safe limit. To prevent overpressure accumulation, timely venting is required to alleviate the pressure within the tank.
Prevent Gas Accumulation: There may be some gas impurities, such as air and water vapor, in liquid oxygen storage tanks. These gases can condense into liquids or solids at the low temperatures of liquid oxygen, blocking pipelines or affecting the normal operation of the tank. Regular venting can expel these impurities, keeping the tank clean and unobstructed.
It is crucial that the release of liquid oxygen be performed by trained operators, adhering strictly to the relevant operational procedures and safety measures. During the release process, care must be taken to prevent leaks of liquid oxygen and exposure to it, ensuring the safety and reliability of the operation.
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