Question 587Steam Plants - Assistant Engineer70% to pass
To stop the rotor of a main turbine while underway at sea you should _______________.
AI Explanation
The correct answer is D) admit astern steam to the turbine after securing the ahead steam.
To stop the rotor of a main turbine while underway at sea, the proper procedure is to secure the ahead steam to the turbine and then admit astern steam. This allows the turbine to be reversed, slowing down the rotor and bringing the ship to a stop. Option A, securing all steam to the turbine, would simply stop the turbine without reversing it. Option B, tightening the stern tube packing gland, is unrelated to stopping the turbine. Option C, applying the prony brake, is not the correct way to stop a main turbine.
Related Questions
#585 When securing a main propulsion turbine equipped with carbon packing glands, the vacuum should always be broken before securing the gland seal steam because _______________.#586 To prevent damage to the turning gear mechanism, which of the following procedures must be carried out before the turning gear is engaged? #588 The jacking gear must be engaged as quickly as possible when securing the main turbines in order to _______________.#589 In securing the main turbines, steam to the second stage air ejectors should be left on for a short period of time in order to _______________.#590 The FIRST step in breaking vacuum on a main turbine unit should be to _______________.