Question 90Gas Turbine - 1st Asst/Chief
70% to passAs shown in the illustration of a gas turbine fuel oil system, when the engine fuel oil valves are de-energized, the remaining fuel left in the system is recirculated back to which of the following? Illustration GT-0021
Afuel pump inlet
Bhigh pressure relief valve
Cday tank
Dfuel purge manifold
AI Explanation
The correct answer is A) fuel pump inlet. When the engine fuel oil valves are de-energized, the remaining fuel left in the system is recirculated back to the fuel pump inlet. This is done to ensure a continuous flow of fuel through the system and prevent stagnation or pooling of fuel, which could lead to potential issues such as coking or contamination. The other answer choices are incorrect because: B) the high pressure relief valve is not the destination for the recirculated fuel, C) the day tank is not the appropriate location for the recirculated fuel, and D) the fuel purge manifold is not the intended destination for the remaining fuel in the system when the valves are de-energized.
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