With reference to centrifugal separators used for oily bilge duty (a) Explain why centrifugal oily water separators are superior to those rely on gravity (3) (b) Describe, with the aid of a sketch, how flow over the centrifugal separator plates can break down emulsion by encountering flocculation of particles and coalescence of droplets (5) (c) State how the bilge overboard control valve can only operated by the Chief Engineer (1) (d) State a valve of overboard parts per million content that may be set which is below the generally recommended value (1)
Bilge, OWS & ORB
UKM Tuticorin 
Leave a comment