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Class 2 (2nd Engineer) MEKM 📅 Jul 2021

Exam Question

(a) Sketch a unit for automatic monitoring and regulation of the fuel viscosity.

(b) Describe fuel change over procedures that are followed for switching from distillate fuel to heavy residual oil and vice versa.

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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