TEAL is fed to the process area by means of TEAL metering pumps P110 A/B. A Micromotion meter at the pump delivery line measures and controls the flow by adjusting the pump stroke. On the pump suction filter F110 separates solid particles >10m from the TEAL, avoiding pump damaging. Flow rate of the pumps can be checked by an LI which can be isolated from the metering drum D110 by an HV. The level decrease in a time range shows the flow rate of the pump running.The metering drum D110 is vented to the seal pot D112, which is filled with Vaseline oil. D112 function is to wash nitrogen during filling operation before venting it to atmosphere. It is equipped with low-level alarm, high level alarm and level indicator.