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Class 2 (2nd Engineer) MEKM 📅 Apr 2024

Exam Question

(a) Describe, with the aid of a sketch, the main engine auxiliary equipment for automatic monitoring and regulation of the fuel viscosity. (6)

(b) Explain the operation of the system, which incorporates the equipment described in (a). (5)

(c) For an engine which is maneuvered on distillate fuel but operated on heavy residual oil at sea, state, as second engineer, the standing orders you would issue for the procedure to be adopted when changing form distillate fuel to heavy residual oil and vice versa. (5)

Exam question diagram

Reference Answer

(a) The sketch below illustrates the main engine ancillary equipment used for automatic monitoring and regulation of fuel viscosity.
Viscotherm with Differential Pressure (DP) Transmitter:
The viscotherm consists of a capillary tube connected to the discharge side of a gear pump driven by an electric motor.
A DP transmitter measures the pressure difference in the capillary tube, which is directly proportional to the viscosity of the fuel oil.

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