The LNG full containment tank is a liquefied natural gas storage tank, consisting of the tank body, instruments, pipelines, valves, etc. The liquefied natural gas storage tank adopts two liquid inlet methods, upper and lower, which can be selected according to actual development conditions.

The inner tank of the LNG full containment tank is equipped with a safety system device consisting of dual safety valves. During normal use, one set is in working condition while the other is in standby. If the working safety valve trips, the manual pressure relief valve should be opened immediately to relieve pressure below the tank's high working pressure. The safety device can be quickly switched to the standby system using a manual handle, effectively ensuring the safety of the tank. This safety system consists of safety valves, explosion-proof devices, safety valves, and three-way ball valves, which not only reduce the welding of pipelines but also have a good fire and static electricity prevention structure. In addition, the safety release ports set on the outer shell fully ensure the safe working reliability of the entire system equipment. Low-temperature pipelines should be concentrated for easy operation and control, with the outlet using a Dura pipe structure to meet low-temperature requirements, reducing stress caused by thermal expansion and contraction of the pipeline, ensuring the safety of the tank. The vacuum valve uses a three-circle seal, effectively ensuring the reliability of the interlayer seal, made of all stainless steel, and is compact in size. The liquefied natural gas storage tank is designed with a hanging structure for easy transportation, lifting, and installation. The unique manhole design ensures the cleanliness of the internal container when closed. The LNG tank uses a combination of vacuum isolation valves and vacuum gauges for easy measurement and maintenance of the interlayer vacuum, extending the tank's service life and improving its quality. The LNG full containment tank is equipped with a level gauge and pressure gauge to display the on-site liquid level and pressure, with the interlayer insulation engineering material being domestic pearlescent sand, using thermal filling technology.

What are the key points to pay attention to when using the LNG full containment tank? Let's briefly understand.

1. Gas leakage, fire, explosion, personal injury, environmental pollution, etc., and abnormal pressure affecting normal use.

2. Preparation of tools and materials and safety maintenance facilities include two explosion-proof plum blossom wrenches, one adjustable wrench, polytetrafluoroethylene gaskets, one explosion-proof emergency light, two pairs of anti-freeze gloves, one set of anti-freeze clothing, two face shields, and two explosion-proof walkie-talkies.

3. Operational climate and environmental requirements: operations must not be conducted during thunderstorms, near open flames or in case of fire, if there is a leak in the station, if the LNG full containment tank has abnormal pressure, or under other conditions that do not allow filling.

What are the safety precautions and emergency measures for the LNG full containment tank? Let's briefly understand.

1. Operators should fully understand the performance of the cylinders, the process flow of the filling platform, and the functions of various valves and instruments on the equipment, be familiar with operating procedures and safety management systems, and understand the performance and hazards of LNG. They should receive technical training and safety training.

2. During filling operations, operators and escort personnel must not leave the site and must strictly follow operating procedures, observing pressure changes to avoid rapid pressure increases that could affect filling safety.

3. When the valves and joints on the equipment freeze, flow should be controlled, and it is strictly prohibited to use open flames or high-temperature objects for thawing, as well as to strike with objects.

4. Operators should wear protective gloves, protective clothing, and anti-freeze shoes to prevent frostbite (during rescue operations, masks and respirators should be worn).

5. On-site operators should be proficient in the use of fire extinguishing equipment.