Liquefied Natural Gas (LNG) Storage Tank
Liquefied Natural Gas Storage Tanks are specialized products for storing liquefied petroleum gas, classified as special equipment, third category pressure vessels, made of 06Ni9DR material. They undergo non-destructive testing, hydrostatic and pneumatic tests, on-site inspection by the Technical Supervision Bureau, and are issued with a pressure vessel inspection certificate. The manufacturing process also includes external rust removal and painting. The storage tanks are subject to strict quality assessments for the material of the pressure components, appearance dimensions, weld quality, operational quality, installation quality, internal equipment, and safety accessories.
Routine physical and chemical tests for the drum material, such as mechanical properties and chemical composition.
The welding joints, welds, tank heads, and the mutual geometric positions of all pressure components are rigorously inspected through X-ray non-destructive testing and magnetic particle inspection. Tests are conducted for the product's sealing, pressure resistance, and all technical indicators that could affect the safe operation of the product.
Common structures of LNG tanks include: vertical LNG tanks, horizontal LNG tanks, vertical mother-child tanks, and atmospheric storage tanks.
Vertical LNG Storage Tank
Volume options include 50, 100, 150, and 200 cubic units.
Horizontal LNG Storage Tank
Volume available in 50 and 100 cubic options.
Vertical mother and son tank
The mother and child drum system consists of multiple child drums connected in series to meet large storage capacity requirements, with multiple child drums assembled within a large outer drum. The number of child drums ranges from 3 to 7, generally not exceeding 12. The individual child drums should not be excessively large, with their volume typically between 100 to 150 cubic units, with the maximum reaching 250 cubic units. Common sizes include 1000 cubic units, 1750 cubic units, and 2000 cubic units.
Atmospheric Storage Tank:
We offer large and medium-sized atmospheric LNG storage tanks, as well as extra-large atmospheric LNG storage tanks.
2. Cautionary Notes
1. Cylinders must be stored in well-ventilated areas and kept at least 1.5 meters away from any fire or heat source. It is strictly prohibited to heat cylinders with fire, boil them, or expose them to direct sunlight. Regularly inspect the cylinder valves and pipeline joints for leaks and ensure they remain airtight. Use soap water to check for leaks; under no circumstances should an open flame be used for leak testing.
2. When lighting the flame, ignite the igniter first, followed by opening the gas, and do not reverse this order. There should be someone supervising during use; do not leave the area to prevent boiling water from spilling and extinguishing the flame, which could cause a liquid gas leak and explosion. After using the gas cylinder, ensure the valve is tightly closed to prevent gas leakage.
3. The liquefied gas in the cylinder should not be completely exhausted; there should be a certain residual pressure. The residual pressure should generally be greater than 49.03 kPa (i.e., 0.5 kg/cm², gauge pressure) to prevent air from entering the cylinder. After the liquefied petroleum gas is used up, the remaining residue in the cylinder is also a flammable substance and should not be poured out arbitrarily to prevent fires caused by the leakage and evaporation of the residue.
4. LPG cylinders are pressurized containers that require proper maintenance and regular inspections. During handling and use, they must be prevented from falling or being struck. It is prohibited to use metal tools to敲击 open the valve. They should be protected from direct sunlight and prolonged exposure to rain. The cylinders are typically inspected every 2 years.
5. Although the explosive range of liquefied petroleum gas (LPG) is not very wide, its lower limit is small, making it easy to ignite and explode upon leakage. Moreover, as LPG is heavier than air, it tends to flow downward when leaking into the air, accumulating in low-lying areas and posing a hidden danger of gas explosion. Therefore, in areas prone to gas leakage, relying solely on window ventilation is insufficient; attention must also be given to adequate ventilation at the lower level.
6. When a liquefied gas leak is detected indoors, windows and doors should be promptly opened for ventilation, allowing the gas to disperse away from any open flame. No fire is allowed in the vicinity. The area should only be used after the fault is resolved and the distinctive odor has dissipated. Any leaked liquid on the ground should be covered with sand and soil before being removed to a safe location. In case of a gas cylinder fire, immediately close the valve, move it to an open area outdoors, and extinguish the fire using dry powder extinguishers, carbon dioxide extinguishers, or by covering it with a wet sack.
7. Educate children not to tamper with gas cylinders at will, and users must be aware of the safety knowledge regarding gas cylinder usage.
