Question 28Gas Turbine - 1st Asst/Chief70% to pass
On a gas turbine powered vessel equipped with a synchro self shifting (SSS) clutch, you are preparing for a power turbine over speed test. What would be an important action to take prior to starting the engine?
AI Explanation
The correct answer is D) Manually lockout the SSS clutch from engaging using the special wrench provided.
Before conducting a power turbine overspeed test on a gas turbine powered vessel with a synchro self shifting (SSS) clutch, it is important to manually lockout the SSS clutch from engaging. This prevents the clutch from automatically engaging during the test, which could lead to potential damage or unsafe conditions. The special wrench provided by the manufacturer is used to manually lock out the SSS clutch, ensuring it remains disengaged during the overspeed test.
The other options are incorrect because: A) Removing the SSS clutch locking pawls would allow the clutch to engage, B) Calculating the engagement speed does not prevent engagement, and C) Engaging the clutch using air pressure would be the opposite of the required action.
Related Questions
#26 What does the term "lockout" of a Synchro-Self-Shifting (SSS) clutch system mean? Illustration GT-0018 #27 How is the clutch shown in the attached illustration engaged? Illustration GT-0018 #29 On a ship with a marine gas turbine as shown in the illustration, a fire emergency stop is initiated when _______________. Illustration GT-0017#30 If a fire is detected in a main propulsion gas turbine enclosure, which of the following would occur prior to automatic release of the fire extinguishing agent? #31 On the marine gas turbine engine shown in the illustration, what temperature should be carefully monitored following a shutdown for an engine fire? Illustration GT-0017