tanks [2]

Large covered cylindrical containers that are usually made of steel; liquid or gaseous oil products are stored here between the time they are refined and sold.

fixed-roof tank

Fixed roof that keeps the tank sealed tightly; it is used to store heavy products such as diesel fuel, kerosene and asphalt.

main inlet

Large pipe through which liquids are introduced into the tank.

spray nozzle

Device that sprays water onto the roof of the tank to cool it when the temperature rises.

manometer

Device that measures the pressure of the product inside the tank.

manhole

Round opening in the tank that is covered with a plate; workers can pass through it.

automatic tank gauge

Device used to measure the level of the liquid in the tank; the tank gauge float’s movement is transmitted to a magnet, which moves the hands on a dial.

secondary inlet

Small pipe through which liquids are introduced into the tank.

bund wall

Cement wall around the tank that protects the environment in the event of accidental leakage.

concrete drain

Small concrete trench used to drain off the product in the event of a spill or when the tank is emptied.

spiral staircase

Staircase whose stairs wind around the wall of the tank to the roof.

splash plate

Gutter used to collect water draining from the roof.

lagging

Material that covers the wall of the tank to keep it watertight and prevent corrosion.

breather valve

Movable part that regulates the internal pressure of the tank; pressure fluctuates during emptying and filling and with the temperature.

drain valve

Device for emptying the liquid from the tank.

manhole

Round opening in the tank that is covered with a plate; workers can pass through it.

tank gauge float

Element that floats on the surface of the stored liquid; it measures its level.