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, as well as equipment and machinery 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.
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 to the tank. Make sure there are no flammable materials or other hazardous items in the vicinity of the tank.
Tank Preparation: Inspect the tank's exterior, including the shell, welds, valves, and fittings. 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 that the flow rate and pressure of the liquid oxygen are maintained within safe limits during the filling process.
Pressure Control: 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 operate smoothly and reliably. Adjust the open and close states of the valves as needed.
Safety Equipment: Inspect the safety equipment around the storage tanks, such as fire separation zones and alarm systems, to ensure they are functioning properly.
Operator Training: Ensure operators are proficient in the safe operation of liquid oxygen storage tanks.

Tanks are specialized storage equipment that require regular inspections and maintenance to ensure safe operation. Here are common inspection methods for tanks:
Visual Inspection: Regularly inspect the exterior of the storage tank, including checking for leaks, corrosion, deformation, cracks, and other issues. Pay special attention to the integrity of the tank's interfaces, welds, and valves.
Pressure Test: Conduct pressure tests to inspect the tank's sealing performance and pressure resistance. Use a pressure gauge or pressure sensor to test the tank's pressure, ensuring it can withstand the designed pressure.
Ultrasonic Testing: Ultrasonic testing can be used to detect corrosion and cracks in tank walls. By scanning the tank with an ultrasonic detection instrument, potential defects and issues are identified.
Magnetic Particle Inspection: This method is used to detect cracks and the quality of welds in storage tank walls. By applying magnetic particles to the surface of the tank and then observing for particle accumulation using a magnetic particle inspection device, one can determine the presence of cracks or welding issues.
Environmental Monitoring: Regularly conduct environmental monitoring around the storage tanks, including checking gas concentrations and temperatures, to ensure the safety of the surrounding environment.
Note that tank inspections should be conducted by a certified inspection agency or qualified inspectors. The frequency and methods of inspection should be determined based on the tank's usage, size, and relevant regulations. Regular inspections and maintenance can help identify potential issues early on, ensuring the safe operation of the tank.

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 for 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 checking the tank's integrity, the sealing of valves and pipes, and the condition of the insulation layer. - Liquid Oxygen Supply: Ensure the liquid oxygen supply system is functioning properly, including inspecting the status of liquid oxygen supply pipes, 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 is within a safe range. If necessary, control the tank's pressure by adjusting pressure valves or pressure relief devices. - Leak Control: Regularly check the sealing of the tank and pipes to ensure there are no leaks. If leaks are detected, take immediate measures for leak control 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 conduct regular inspections and maintenance. - 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 pipes, to ensure normal operation. - Waste Disposal: Properly dispose of waste generated by liquid oxygen storage tanks, 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, cooperate with local regulatory agencies and individuals to ensure the tank's safety and reliability.

Liquid oxygen storage tanks may deform during use. The following are common deformation defects in liquid oxygen storage tanks:
Elastic deformation: Liquid oxygen tanks may undergo elastic deformation when subjected to external pressure or temperature changes. This deformation is typically reversible, meaning the tank will return to its original shape upon the removal of external pressure or normalization of temperature.
Plastic Deformation: When a liquid oxygen tank is subjected to significant external force or pressure, it may experience plastic deformation. This type of deformation is irreversible, and the tank cannot return to its original shape. Plastic deformation can cause the tank to change shape, develop dents, or twist.
Hot Deformation: Liquid oxygen tanks may experience hot deformation when subjected to high temperatures or temperature changes. Hot deformation can cause the tank to change shape, expand, or contract.
Cold Deformation: Liquid oxygen tanks may experience cold deformation when subjected to low temperatures or temperature changes. Cold deformation can cause the tank to change shape, shrink, or crack.
These deformation defects may affect the structural integrity and safety of liquid oxygen storage tanks. Therefore, it is important to regularly inspect and assess the deformation of liquid oxygen storage tanks to ensure their normal operation and safe use. If deformation defects are found in the tanks, prompt repair or replacement measures should be taken to avoid further damage and safety risks.
Zhongjie Special Equipment upholds the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We offer society high-quality products and services at competitive prices!