6.1 Principle of operation In general, a high rate of separation is favoured by a large size of oil globule, elevated temperature of the system(which affects both the specific gravity differential of the oil and water and the viscosity of the water )and the use of sea water Turbulence or agitation should be avoided since it causes re-entrainment; conversely laminar(or streamline) flow is beneficial6.1 Principle of operation • In general, a high rate of separation is favoured by a large size of oil globule, elevated temperature of the system (which affects both the specific gravity differential of the oil and water and the viscosity of the water) and the use of sea water. • Turbulence or agitation should be avoided since it causes re-entrainment; conversely laminar (or streamline) flow is beneficial