Displacement water means seawater in storage cells for oil. The seawater enters the storage cells when oil is loaded for further export and escapes to sea when the storage cells are filled with new oil.
The requirement for a maximum oil content in displacement water discharged to the sea applies at all times, i.e. the oil content in each individual sample taken and analysed must not exceed 15 mg/l. The oil content must be documented in such a way that the requirements for representativeness as specified in Section 70 of the Activities Regulations are complied with.