STANDARD OPERATING INSTRUCTIONS NO. 2 MAINTENANCE AND OPERATION INSTRUCTIONS FOR POL FACILITIES PARRY ISLAND where the entrained air is separated and vented to the atmosphere, The gasoline then leaves the deaerator and passes through meter M2, pressure regulator valve V64, valves V66, V68 and V69 to the main gasoline loading header, and is delivered to the tank loading header through valve V116 and liquid level control valve L2 and thence through valves V70, V71, V72 and V73 into tanks 6 through 9. The gasoline is delivered also to tank No. 307 through valves V84 and ves fren the main gasoline header. During the loading operation, valve V114 is open and V55 closed until the excess salt water has been drained from the submarine line; then V114 is closed and valve V55 is opened allowing the gasoline to pass into the system. Valves V54 and V109 are closed during this operation. A line is connected across the main unloading header and the vent on tank No. 7 through the float chamber of liquid level control valve L2, This line is provided with two block valves, V86 and V87, for cutting the float chamber off the system. GASOLINE UNLOADING OPERATION 7. The gasoline is unloaded from tanks 6 through 9 to the main gasoline unloading header through vavles V78, V79, V80 and V81 and from tank 307 through valves V83 and V85. Thence it