Question 93Gas Turbine - 1st Asst/Chief70% to pass
The six borescope ports located in the compressor rear frame casing of the marine propulsion gas turbine shown, can be used to inspect all EXCEPT which of the following components? Illustration GT-0006
AI Explanation
The correct answer is A) 14th stage compressor blades.
The borescope ports located in the compressor rear frame casing of the marine propulsion gas turbine can be used to inspect the fuel nozzles, combustor, and 1st stage turbine nozzle, but not the 14th stage compressor blades. The compressor blades are located further forward in the engine, beyond the reach of these specific borescope ports. The other components listed (fuel nozzles, combustor, and 1st stage turbine nozzle) are all located in the rear section of the engine, making them accessible through the borescope ports in the compressor rear frame casing.
Related Questions
#91 You are preparing for a borescope inspection of a GE LM2500 gas turbine engine. You are reviewing the correct geometric orientation nomenclature which includes which of the following? #92 When conducting a borescope inspection, you must be aware of all of the following factors EXCEPT which? #94 While underway on a ship with gas turbine engines, the most likely indication of an engine stall is which of the following? #95 Which of the following is the most probable cause if, while underway, the main propulsion gas turbine air intake blow-in doors open? #96 In which of the following ways can compressor surge cause excessive temperatures in the turbine section?