The purpose of the LNG storage tank is to store LNG liquids. The shape has vertical storage tank, horizontal storage tank. Thermal insulation material: vacuum powder (vermilion sand); Wind wound type (glass fiber) daily evaporation rate: <0.3%. Design maximum working pressure 1.2Mpa safety valve opening pressure: 1.25Mpa withstand pressure: < 1.6Mpa design temperature: -196℃ working temperature: -162℃. The following is the introduction of LNG filling equipment manufacturers about the use of LNG storage tank precautions?

1. The tank with double root valve, the valve near the tank should be open normally.

2. When unloading, it is recommended that the limit filling capacity of the storage tank should not exceed 90% of the effective volume (the manufacturer gives 85%-95% of the geometric volume), and the use allowance should not be less than 10%.

3. When the tank pressure is high, it is not necessarily considered that the tank has problems, but the heat leakage and liquid storage time of the whole system should be taken into account. Generally, when the pressure exceeds 1.1MPa, it is necessary to discharge and relieve pressure.

4. When a large number of long time sweating or frosting occurs in the storage tank and the pressure keeps rising rapidly, the vacuum failure should be considered and emergency treatment should be carried out to manually discharge the pressure and transfer the LNG liquid in the tank.

5. It is recommended to carry out a vacuum test every other year for storage tanks. For hot tanks, the vacuum degree is less than 1Pa, and for cold tanks, the vacuum degree is less than 0.5Pa (0.00375TOF).

6. The storage tank cannot be transported with liquid, and the LNG liquid in the tank should be discharged when it is out of service for a long time.

7. Storage tanks belong to pressure vessel equipment. According to the "Pressure Vessel Safety Technical Supervision Regulations" promulgated and implemented by the People's Republic of China, the installation, maintenance and renovation of pressure vessels shall be informed by units with corresponding qualifications to the local quality inspection department, and the installation, maintenance and renovation can only be carried out after obtaining permission.

The above content is the precautions for the use of LNG storage tank introduced by the LNG filling equipment manufacturer. I hope it can help you. Interested friends, welcome to collect and pay attention to this site.