129. What should you do when a turbine bearing shows signs of overheating?

Immediately reducing turbine speed lowers the load and friction on the bearing, which is the safest initial response to overheating. Reducing speed decreases shaft load, frictional forces, and heat generation, preventing bearing damage while allowing for further diagnosis. Abruptly stopping the turbine can disrupt lubrication and create stresses, while adjusting oil pressure or cooling water flow may not address the root cause of overheating and can delay effective protection; therefore, reducing speed is the priority.