Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen-nitrogen-argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
When selecting low-temperature liquefied natural gas (LNG) storage tanks, the following factors should be considered:
Tank Types: Common LNG tank types include vertical fixed-roof tanks, spherical tanks, and horizontal tanks. Choose the appropriate tank type based on specific application requirements and site conditions.
Tank Capacity: Determine the tank capacity based on the storage requirements for LNG and the anticipated usage volume. The tank capacity should meet the expected storage duration and supply demands.
Material Selection: LNG tanks are typically made of low-temperature steel or nickel alloys to ensure corrosion resistance and strength in low-temperature environments. Select the appropriate material based on the tank's design pressure and temperature requirements.
Safety Performance: LNG tanks must possess excellent safety performance, including seismic resistance, fire resistance, and leak control capabilities. The tanks should comply with relevant safety standards and regulations, such as API 620, EN 1473, etc.
Maintenance and Inspection: Consider the maintenance and inspection requirements of the tank, including internal cleaning, coating protection, corrosion prevention measures, etc. The tank's design should facilitate maintenance and inspection operations to ensure long-term reliable operation.
Environmental Impact: When selecting LNG tanks, the impact on the surrounding environment must be considered. The layout and design of the tanks should comply with environmental protection requirements, minimizing noise, vibration, and gas emissions to reduce environmental impact.
Cost-effectiveness: Consider the investment, operational, and lifecycle costs of the tank to choose one with a favorable cost-performance ratio.
需要注意的是，选型LNG储罐时应遵循相关的和地区的法规、标准和规范。此外，咨询的工程师或储罐制造商，以获取更详细和准确的选型建议。

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 tank, including checking for leaks, corrosion, deformation, cracks, and other issues. Pay special attention to ensure the integrity of the tank's interfaces, welds, and valves.
Pressure Test: Conduct pressure tests to assess the tank's sealing performance and pressure resistance. Pressure gauges or pressure sensors can be used for pressure testing the tank to ensure it can withstand the designed pressure.
Ultrasonic Testing: Ultrasonic testing can be used to detect corrosion and cracks in storage tank walls. By scanning the tank with an ultrasonic probe, potential defects and issues are identified.
Magnetic Particle Inspection: Magnetic particle inspection is used to detect cracks in tank walls and the quality of welds. By applying magnetic particles to the tank surface and then using a magnetic particle inspection device to observe for particle accumulation, it can be determined if there are any cracks or weld 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 regulatory requirements. Regular inspections and maintenance can help identify potential issues early on, ensuring the safe operation of the tank.

When using a 50-cubic-liter liquid oxygen storage tank, the following safety concerns should be noted:
Tank Pressure Control: Ensure that the liquid oxygen pressure inside the tank remains within a safe range. Monitor and control the tank's pressure to avoid risks from either excessive or insufficient pressure.
Leakage and Fire Prevention: Conduct regular inspections of the tank and related pipelines to ensure their密封 integrity, preventing any leakage of liquid oxygen. Liquid oxygen is highly flammable and fire prevention measures must be in place to ensure no sources of fire are present around the tank.
Explosion Prevention Measures: Oxygen inside the liquid oxygen tank may cause an explosion upon contact with flammable substances. Ensure there are no flammable items around the tank and implement explosion prevention measures, such as explosion-proof electrical equipment and static grounding.
Safety valves and exhaust systems: Storage tanks should be equipped with safety valves and exhaust systems to prevent overpressure situations. Ensure the proper operation of the safety valves and the unobstructed flow of the exhaust system.
Maintenance and Inspection: Conduct regular maintenance and inspection of the storage tanks, including cleaning, coating protection, and corrosion prevention, to ensure the structural integrity and safety of the tanks.
Safety Operation and Training: Operators must undergo relevant safety training, familiarize themselves with the safe operation procedures for liquid oxygen tanks, and understand emergency response measures. Adhere to correct operational steps to ensure safe operation.
Environmental Monitoring: Regularly monitor environmental parameters such as oxygen concentration and temperature around the storage tanks to ensure safety.
Emergency Preparedness: Develop an emergency response plan including measures for leaks, fires, and explosions. Equip with appropriate emergency and firefighting equipment to handle unforeseen incidents.
Above are some safety issues to be aware of when using 50-cubic-liter liquid oxygen tanks. To ensure safety, it is recommended to follow relevant safety regulations and operation guidelines, and seek assistance and guidance from professionals when needed.

The use and operation of the liquid oxygen storage tank system require attention to the following points:
Safe Operation: When operating the liquid oxygen storage system, it is mandatory to adhere to the relevant safety operating procedures and standards to ensure the safety of the operators.
Tanks Selection: Choose liquid oxygen tanks that meet specifications and standards, ensuring their quality and safety performance.
Tank Installation: Tanks should be installed on a solid foundation to ensure stability. Additionally, good ventilation should be maintained around the tank, and it should be kept away from flammable materials and heat sources.
Sealability Inspection: Regularly check the sealing performance of the storage tank system to ensure there are no leaks at valve and pipeline connections.
Pressure Control: Storage systems should be equipped with pressure gauges and safety valves, with regular inspections and maintenance to ensure pressure remains within safe limits.
Fire Protection Measures: Liquid oxygen contains a high concentration of oxygen, which is highly flammable. Install fire walls around the storage tank system, prohibit smoking and open flames, and ensure safety.
Static Protection: During the operation of the liquid oxygen system, static electricity may cause sparks, increasing the risk of fire. Measures such as using static-conductive materials and anti-static equipment are taken to reduce the accumulation and release of static electricity.
Regular inspections and maintenance: Conduct regular checks on the tank system and associated equipment, including valves, pipes, pressure gauges, etc. Ensure that the equipment is in perfect condition, and promptly repair or replace any damaged parts.
Waste Gas Treatment: The use of the liquid oxygen system generates waste gas, which requires appropriate waste gas treatment measures to minimize environmental impact.
Above are the precautions to be taken when using the liquid oxygen storage tank system, ensuring operational safety and the normal operation of the system. During operation, strict adherence to relevant operational procedures and safety requirements should be maintained to avoid accidents.
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