Q1. A. Describe an automatic self de-sludging centrifuge suitable for dealing with fuel of density upto 1010 kg/m3 at 150C;
B. Explain how the centrifuge described in Q4 (a) is able to remove water from a fuel which has a density that is higher than that of water and state factors that may assist the operation.
C. As Second Engineer, write down the start-up procedure for the centrifuge described in Q1 (A) for the benefit of your staff;
D. State how is the problem of catalytic fines in fuel oil may be dealt with.
Q6. a) Referring to ALCAP technology in marine purifiers, discuss with diagrams, how the Sludge monitoring system along with the Water monitoring system in modern centrifugal separator has increased the separation efficiency of oil? (8)
b) With respect to new development in de-sludging in separators, discuss the “Centri Shoot Discharge” system? (8)
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