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/GB3-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 certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the U.S. ASME/U2 certification.
The leak treatment methods for liquid argon storage tanks mainly include the following steps:
Leak Detection: Leaks in liquid argon storage tanks are identified through odors, gas detection equipment, or abnormal pressure in liquid argon storage tanks.
Confirm air leak location: Use gas detection instruments or foam leak detectors, etc., to pinpoint the exact location of air leaks. Inspect tank connections, valves, pipeline joints, etc., to locate the air leak points.
Seal Air Leaks: Take appropriate actions to stop air leaks based on their location. For instance, for leaks at interfaces, inspect and adjust gaskets or tighten bolts; for valve leaks, check and replace seals.
Isolate Air Leaks: During the process of dealing with air leaks, it is necessary to isolate the leaky areas to ensure personnel safety. Set up warning signs, restrict access to the area, and take necessary protective measures, such as wearing protective masks and gloves.
Emptying liquid argon: If air leakage cannot be repaired immediately or the leakage is significant, consider emptying the liquid argon. By gradually reducing the pressure of liquid argon in the storage tank, convert it into gas to minimize the risk of air leakage.
Ventilation Treatment: During the air leakage treatment, ensure adequate ventilation and promptly exhaust the gases produced by the evaporation of liquid argon. Natural ventilation or the use of ventilation equipment can be employed to expel the evaporated gas of liquid argon outdoors.
Safety Assessment and Repairs: After completing the air leakage treatment, conduct a safety assessment to ensure the tank's safety. Based on the assessment results, perform any necessary repairs and maintenance to prevent further air leakage.
Note that liquid argon is a low-temperature liquid with a low boiling and freezing point. Caution is required when dealing with air leaks to prevent contact with liquid argon and cold exposure. When handling air leaks in liquid argon storage tanks, the operation should be performed by personnel and in accordance with relevant safety operation procedures and standards.

During the installation process of the central oxygen supply low-temperature liquid oxygen storage tank, special attention should be paid to the following aspects:
Safe Operation: Strict adherence to safety procedures and standards is mandatory during the storage tank installation process. Operators must be trained, familiar with the properties and safety requirements of liquid oxygen, and knowledgeable about the equipment and operational procedures to ensure safe operations.
Fire Prevention Measures: Liquid oxygen has a high oxygen content, which is prone to cause fires. During the installation process, necessary fire prevention measures should be taken, such as setting up firewalls, using fire-retardant coatings, and prohibiting open flames, to prevent fires from occurring and spreading.
Leakage Control: Pay attention to leakage control during the installation process. Oxygen leakage can lead to increased oxygen concentration, raising the risk of fire and explosion. Leak detectors and alarm systems should be equipped to detect and control leaks in a timely manner, and appropriate emergency measures should be taken.
Oxygen Concentration Monitoring: During the installation process, the oxygen concentration around the liquid oxygen storage tank should be monitored regularly. High oxygen concentrations can intensify the combustion of flammable substances, increasing the risk of fire and explosion. Take timely measures to ensure the oxygen concentration remains within safe limits.
Grounding and Static Electricity Protection: During the liquid oxygen plant process, ensure proper grounding of the storage tank and related equipment to minimize static accumulation and release. Utilize static-conductive materials and anti-static equipment to reduce the dangers caused by static electricity.
Regular inspections and maintenance: After the installation is completed, the liquid oxygen tank should be regularly inspected and maintained. This includes visual inspections, pressure tests, and leak detection, to ensure the tank's safety and stability.
Note that during the installation of the central oxygen supply low-temperature liquid oxygen storage tank, operations should be carried out by experienced personnel and in accordance with relevant safety operating procedures and standards. Throughout the installation process, safety risks should be closely monitored, and timely measures should be taken to ensure the safety and stability of the installation.

To extend the service life of liquid argon storage tanks, the following measures can be taken:
Regular inspections and maintenance: Conduct regular visual inspections of the liquid argon tank, check valves and connections, and perform leak detection and pressure tests. Promptly identify and repair potential issues to ensure the normal operation of the tank.
Maintain the insulation layer: The insulation is crucial for the thermal preservation of liquid argon tanks. Regularly inspect the integrity and insulating properties of the insulation, repair or replace any damaged insulation materials to ensure the tank's insulating effectiveness.
Regulate Liquid Argon Temperature: The temperature of liquid argon should be maintained within an appropriate range to prevent damage to the storage tank from either excessive or insufficient temperatures. Implement suitable cooling or heating measures to ensure the stability of liquid argon's temperature.
Corrosion Protection: The exterior shell and internal structure of the liquid argon tank should be protected against corrosion and oxidation. Regular inspections and maintenance of the protective coating are necessary to ensure its integrity.
Avoid excessive pressure and over-filling: Prevent excessive internal pressure or low pressure in the storage tank, as well as over-filling with liquid argon. Excessive pressure and over-filling can lead to structural rupture or damage of the tank.
Regular cleaning and waste removal: Regularly clean the interior of the tank to remove accumulated impurities and dirt. Regularly remove waste to prevent contaminants and sediments in liquid argon from damaging the tank.
Safety Operation and Training: Ensure operators have knowledge and skills for safe operation of liquid argon tanks. Enhance safety training to improve operators' safety awareness and emergency response capabilities.
Manage records and documents: Establish comprehensive management records and documentation, including tank usage, inspection logs, and maintenance records. Regularly review and update management records to ensure safe management and maintenance of the tanks.
These measures can help extend the service life of liquid argon storage tanks, but specific operations and management are required based on the type and application of the tank. When performing maintenance and operation, please adhere to relevant regulations and standards, and consult experts to ensure safety and effectiveness.

During the degreasing process of high vacuum pipelines in low-temperature liquid storage tanks, the following steps can be taken:
Preparation: Ensure the cleanliness and readiness of the degreasing equipment and tools. Check the pipeline system's connections and sealing, ensuring there are no leaks.
Pipe Cleaning: Utilize suitable detergents and tools for cleaning pipes to remove surface dirt and grease. Methods may include mechanical brushing, high-pressure water jetting, or chemical cleaning.
De-greasing Process: Select an appropriate de-greaser and inject it into the pipeline system. The de-greaser can be an organic solvent or an alkaline solution, the choice depending on the pipeline material and type of dirt. Ensure the de-greaser thoroughly covers the interior pipeline walls and maintains a certain contact time.
Flush Pipeline: Drain the degreaser from the pipeline system and flush with clean water to remove any remaining degreaser and dirt. During the flushing process, high-pressure water or gas can be used for rinsing to ensure the interior of the pipeline is clean.
Dry Pipe: Utilize drying equipment or ventilation systems to evaporate or exhaust moisture within the pipe, ensuring the interior surface is dry. Drying can be achieved with hot air or nitrogen.
Inspection and Testing: After degreasing, inspect and test the pipelines to ensure cleanliness and sealing integrity. Visual inspection, pressure testing, or other relevant tests can be conducted.
Be mindful that when descaling high vacuum pipelines of low-temperature liquid storage tanks, adhere to relevant safety operation procedures and guidelines. Ensure that operators are equipped with the necessary safety awareness and operational skills to prevent accidental incidents.
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