Question 337Steam Plants - 1st Asst/Chief

The correct answer is C) immediately reduce speed. When a turbine bearing shows signs of overheating, the immediate response should be to reduce the turbine speed. This is because overheating in a turbine bearing is a serious issue that can lead to further damage or even failure of the turbine if not addressed promptly. Reducing the speed of the turbine will lower the load on the bearing and allow it to cool down, preventing further damage. The other options are not the correct responses in this situation. Increasing the lube oil pump discharge pressure (A) or the cooling water supply (D) may not be enough to effectively cool an overheating bearing. Stopping the turbine (B) may be necessary as a last resort if the bearing cannot be cooled down, but the initial response should be to reduce speed to try to stabilize the situation.