Question 335Steam Plants - 1st Asst/Chief
70% to passIf the main propulsion turbine begins to vibrate severely while you are increasing speed, you should _______________.
Astop the turbine and not answer any more bells
Bopen the throttle wider to pass through the critical speed
Chold the turbine at that speed until vibration stops
Dimmediately slow the turbine to see if the vibration will stop
AI Explanation
The correct answer is D) immediately slow the turbine to see if the vibration will stop. When a turbine begins to vibrate severely, it is a sign of a potential mechanical issue. The proper response is to immediately reduce the turbine speed to see if the vibration subsides. This allows the operator to assess the situation and determine if it is safe to continue operating at that speed. Continuing to increase speed (option B) or maintaining the same speed (option C) could potentially cause further damage to the turbine. Completely stopping the turbine (option A) may not be necessary if the vibration can be stopped by simply reducing speed.
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