Loading and Metering Skid

Batch control: The LNG batch controller installed on the skid is activated upon receiving an order to begin loading. It follows a predetermined protocol that opens the valves and tracks the flow rate via a flowmeter. When the designated loading capacity is reached, the procedure is completed by closing the valves.

Pre-cool tank: In order to load LNG safely, tank cars arriving at the loading station must be pre-cooled. This is done by spraying with low flow rate at the top, reducing the temperature in the tank through LNG gasification. Once the temperature in the tank has been lowered to around -100 degrees, full flow bottom loading can begin.

Flow control: A flow control valve and mass flowmeter are installed on the loading skid to ensure the loading process is carried out smoothly and safely. The valve and meter work together to effectively regulate the flow rate.

Nitrogen purging: Nitrogen purging is enabled by three nitrogen regulating valves fitted on the loading skid. These valves are used for nitrogen purging of the loading arm both before and after loading, as well as creating a nitrogen seal on the rotary joint, and for detection of any potential leaks.

Temperature and pressure alarm: This control system is designed with pressure and temperature transmitters installed on the LNG and RG pipelines of the loading skid in order to monitor temperature and pressure during loading. If their values exceed the predetermined limit, an alarm will sound to alert the necessary personnel.

Safe release of pressure: In an emergency, safety valves installed on the liquid, gas, and nitrogen pipeline of the loading skid act to regulate pressure in order to protect equipment and instruments within the skid. If the pressure exceeds the design limit, these safety valves will activate and ensure the safety of the system.