Class 2 (2nd Engineer) MEP 📅 Feb 2024

Exam Question

With reference to steering gear hydraulic systems:

(a) Explain the factors that could contribute to failure of connecting flange leading to total loss of oil from the system. (8)

(b) Describe an arrangement designed to ensure that the problem would not cause steering failure. (8)

Reference Answer

(a) Failure of Connecting Flanges Leading to Total Loss of Oil from the System
The hydraulic system experiences pulsating pressure due to dynamic loads caused by external forces acting on the rudder. These fluctuations can place stress on the connecting flanges.
Sudden manoeuvres can create pressure pulsations as the hydraulic system responds quickly to changes in direction or speed. These rapid demands may exceed the design limits of the flanges.
Harsh sea conditions can generate vibrations and stresses in the piping system, leading to severe damage or failure of connecting flanges over time.

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