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, B-grade boiler installation and GB2, GC2 class pressure pipeline installation licenses, as well as a qualification for electromechanical equipment installation contracts. 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. 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.
To extend the service life of low-temperature liquid storage tanks, the following measures can be taken:
Regular Inspections and Maintenance: Conduct regular visual inspections of the tank, including the shell, welds, valves, and connections. Check for any abnormalities such as cracks, corrosion, or deformation, and promptly repair or replace damaged parts.
Maintaining Insulation: Insulation is crucial for the thermal preservation of low-temperature liquid storage tanks. Regularly inspect the integrity and insulation performance of the insulation, repair or replace any damaged insulation material to ensure the tank's insulation effectiveness.
Regulate Temperature and Pressure: The temperature and pressure of low-temperature liquid storage tanks should be maintained within a safe range. Avoid excessive or low temperatures and pressures that may damage the tank. Implement appropriate cooling or heating measures to ensure stable temperature and pressure of the liquid.
Corrosion Protection: The outer shell and internal structure of the storage tank should be protected against corrosion and oxidation. Regular inspections and maintenance of the protective coating are required to ensure its integrity.
Avoid excessive pressure and overfilling: Prevent the internal pressure of the tank from being too high or too low, as well as overfilling with liquid. Excessive pressure and overfilling can lead to structural cracks or damage to the tank.
Regular Cleaning and Drainage: Periodically clean the interior of the tank to remove accumulated impurities and dirt. Regularly drain to prevent damage to the tank from杂质 and sediment in the liquid.
Safety Operations and Training: Ensure operators are knowledgeable and skilled in the safe handling of cryogenic liquid storage tanks. Enhance safety training to boost operators' awareness and emergency response capabilities.
Manage records and documentation: Establish comprehensive records and documentation, including the usage status of storage tanks.

The spacing regulations between liquid oxygen storage tanks are typically governed by relevant safety standards and specifications to ensure safe distances and fire separations between the tanks. The following is a reference for general spacing rules for liquid oxygen storage tanks:
Horizontal spacing between tanks: The horizontal spacing between liquid oxygen tanks is typically required to maintain a certain distance to prevent heat conduction and mutual interference between tanks. The specific spacing should be determined based on factors such as tank capacity, pressure, and arrangement, with a general recommendation to maintain a safe distance to ensure safe operation and maintenance between tanks.
Tank and building separation: The spacing between liquid oxygen tanks and buildings or other facilities must also comply with relevant safety requirements. This is to prevent any danger to surrounding buildings or facilities in the event of a tank leak or accident. Specific spacing requirements will be determined based on factors such as tank capacity, pressure, and the surrounding environment, with a general recommendation to maintain a safe distance.
Fire protection distances: It is crucial to maintain fire protection distances between liquid oxygen tanks and between tanks and buildings. Liquid oxygen has a high oxygen content and flammability, and in the event of a leak or accident, it could ignite a fire. Therefore, liquid oxygen tanks must be kept at a certain distance from other facilities to prevent the spread of fire or danger to the surrounding environment.
Note that specific liquid oxygen tank spacing regulations may vary by region or industry. When designing, arranging, and operating liquid oxygen tanks, adhere to local safety standards and norms, and consult experts for accurate guidance.

When selecting the support 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 provided in the design specifications, which can be used to determine the support's load capacity.
Stability: The support must provide sufficient stability to ensure the tank does not tilt or sway during use. The design of the support should consider the tank's center of gravity and its changes to provide stable support.
Corrosion Resistance: Liquid argon is both low temperature and corrosive. The material for supports should have excellent corrosion resistance to prevent corrosion and damage. Common support materials include stainless steel, aluminum alloy, etc.
Insulation: Liquid argon storage tanks generally require thermal insulation. The supports should possess certain insulation properties to reduce heat transfer and evaporation of the liquid argon. The design of the supports should consider the installation and protection of the insulation layer.
Installation and Maintenance: The support should feature ease of installation and maintenance for the convenience of tank installation and daily maintenance tasks.
When selecting the foundation for liquid argon storage tanks, it is advisable to consult engineers or suppliers. Choose an appropriate foundation 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 foundation.

One of the common drawbacks of pressure vessels in use is corrosion. Corrosion refers to the reaction between the metal surface and chemical substances in the environment, leading to damage to the metal surface and thinning of the material. The following are common corrosion drawbacks of pressure vessels:
Pitting Corrosion: Pitting corrosion refers to localized pits or holes appearing on the surface of metal. This type of corrosion is usually caused by corrosive substances present in the local environment, such as acids, salts, etc.
Bacterial Corrosion: Bacterial corrosion is a phenomenon caused by microorganisms. These organisms can form a biofilm inside pressure vessels and produce acidic substances, leading to corrosion of the metal surface.
Punch Corrosion: Punch corrosion refers to the phenomenon of penetrating corrosion appearing on the metal surface. This type of corrosion usually occurs due to the damage or defect of the protective layer on the metal surface, allowing corrosive substances to come into direct contact with the metal.
Stress Corrosion Cracking: Stress corrosion cracking occurs when a metal surface is simultaneously subjected to stress and a corrosive environment, leading to the formation and propagation of cracks. This type of corrosion is commonly found in pressure vessels operating under high stress and corrosive conditions.
Corrosion can lead to material thinning and reduced strength in pressure vessels, even causing severe consequences such as leaks or ruptures. Therefore, the following measures should be taken to address the corrosion issue in pressure vessels:
Regularly inspect and evaluate the corrosion condition of pressure vessels, including methods such as visual inspections and non-destructive testing.
Take anti-corrosion measures such as coating protection, cathodic protection, and appropriate material selection to minimize the occurrence and progression of corrosion.
Regularly clean and maintain pressure vessels to remove dirt and impurities that may cause corrosion.
Comply with relevant safety regulations and operational guidelines to ensure the safe and proper operation of pressure vessels.
For severely corroded pressure vessels, repair or replacement may be necessary to ensure their safety and reliability.
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