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 and GB2/Class, GC2/Class pressure pipeline installation licenses, and electromechanical equipment installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a council member of the Shandong Equipment Manufacturing Association, and has 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.
When selecting the pedestal for a liquid argon tank, consider the following factors:
Load Capacity: The support must be capable of bearing the weight of the liquid argon tank. Select a support with adequate load capacity based on the tank's capacity and dimensions. Typically, the weight of the liquid argon tank is specified in the design specifications, which can be used to determine the load capacity of the support.
Stability: The support must provide sufficient stability to prevent the tank from tilting or swaying during use. The design of the support should consider the tank's center of gravity and its changes to ensure stable support.
Corrosion Resistance: Liquid argon has low temperature and corrosive properties. The material of the support should have good corrosion resistance to prevent corrosion and damage. Common support materials include stainless steel, aluminum alloy, etc.
Thermal Insulation: Liquid argon storage tanks generally require thermal insulation. The supports should have certain insulation properties to reduce heat transfer and evaporation of liquid argon. The design of the supports should take into account the installation and protection of the insulation layer.
Installation and Maintenance: The support should be designed for easy installation and maintenance, facilitating the tank's installation and routine maintenance tasks.
When selecting the supports for liquid argon tanks, it's advisable to consult with engineers or suppliers. Choose the appropriate supports based on the specific tank requirements and usage environment. At the same time, adhere to relevant design specifications and safety standards to ensure the quality and reliability of the supports.

When cleaning a low-temperature liquid storage tank, the following steps should be taken:
Safety Preparations: Prior to cleaning, ensure there are no remaining liquids or gases inside the tank, and that the tank has been properly drained and vented. Wear appropriate personal protective equipment, such as protective suits, gloves, and safety shoes.
Cleaner Selection: Choose a cleaner suitable for low-temperature environments and liquid storage tank materials. Common cleaners include acidic and alkaline solutions, organic solvents, or specialized cleaners. Select the appropriate cleaner based on the tank material and the nature of the contaminants.
Cleaning Process: Inject the cleaning agent into the tank and use appropriate tools (such as a sprayer, brush, or high-pressure water) to clean the inner walls of the tank. Multiple cleanings can be performed as needed to ensure all contaminants are removed.
Washing and Discharge: After cleaning, rinse with clean water or an appropriate solvent to remove cleaning agents and residues. Ensure the tank is dry and discharge the rinse water into an appropriate treatment system.
Inspection and Verification: After cleaning, inspect the tank to ensure no residual contaminants are left inside. Appropriate detection equipment or methods, such as optical inspection, chemical analysis, or ultrasonic testing, can be used to verify the cleaning effectiveness.
Be mindful that when cleaning low-temperature liquid storage tanks, it's crucial to adhere to relevant safety regulations and operational guidelines. Liquid storage tanks typically have high flammability and low-temperature characteristics, so operators must strictly follow safety procedures to ensure the safety of personnel and equipment. During the cleaning process, be cautious to prevent leaks of cleaning agents and contaminants, and take appropriate measures for handling and disposal.

Prior to using the liquid oxygen tank, the following preparations must be made:
Safety Inspections: Ensure the tank and its surrounding environment are safe. Check for any damage, leaks, or other safety hazards. 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 fittings. Ensure there are no obvious damages or corrosion. Check that the insulation layer is intact and undamaged.
Liquid Oxygen Filling: Utilize liquid oxygen transfer equipment to fill the storage tank. Ensure that the flow rate and pressure of liquid oxygen are maintained within safe limits during the filling process.
Pressure Control: Storage tanks should be equipped with pressure control devices to ensure internal pressure is within a safe range. Inspect and adjust the pressure control devices to ensure proper operation.
Valve Operation: Inspect the tank's valves and fittings for proper operation. Ensure the valves open and close smoothly and reliably. Adjust the opening and closing status 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 storage tanks.

The reasons for not leaving liquid oxygen tanks empty for extended periods are mainly as follows:
Evaporation loss of liquid oxygen: Liquid oxygen has a low boiling point, and prolonged empty storage will cause it to continuously evaporate, resulting in a loss of liquid oxygen within the storage tank. The evaporation rate of liquid oxygen is relatively fast, with daily evaporation amounts potentially reaching several percent of the tank's capacity. Extended empty storage can lead to waste of liquid oxygen.
Safety Risk: Liquid oxygen is a strong oxidizer with high flammability and explosiveness. Prolonged empty storage of liquid oxygen tanks increases the opportunity for liquid oxygen to come into contact with the surrounding environment, thereby increasing the risk of accidental fires and explosions.
Risk of Tank Damage: Long-term emptying of liquid oxygen tanks can lead to internal oxidation reactions, accelerating corrosion and damage to the tank. Tank damage can affect its sealing performance and structural integrity, increasing the risk of leaks and safety accidents.
Therefore, to ensure the safe storage and effective utilization of liquid oxygen, the liquid oxygen storage tank should be regularly maintained and serviced to avoid long-term disuse. When the tank is not in use, appropriate measures should be taken, such as sealing the tank and reducing the evaporation of liquid oxygen, to minimize losses and safety risks.
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