Pre-cooling method and pre-cooling precautions for LNG storage tanks
Pre-cooling with low temperature nitrogen gas. Check the integrity of the unloading hose, and there are no rain, garbage and other debris in the pipe. Connect the hose to the tanker and check that the connection is secure. Raise the tank pressure, open the tank valve, check the hose connection for leaks. Slowly fill the LNG storage tank with low-temperature nitrogen gas. When the pressure of the storage tank rises to 0.2Mpa, close the unloading valve of the unloading station. After the LNG storage tank is insulated for 15 minutes, open the gas phase manual venting valve of the storage tank, evacuate the nitrogen, and repeatedly raise and lower the pressure. get on.
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