Question 725Steam Plants - Assistant Engineer

The correct answer is C) the gland seal leak off line is obstructed. Excessive steam leaking from the forward gland on the high-pressure turbine typically indicates that the gland seal leak off line is obstructed. This prevents proper drainage of the steam that leaks past the gland seals, causing a buildup of pressure and excessive steam leakage. The other options are incorrect because: A) The turbine operating at low speed would not directly cause excessive steam leakage from the gland. B) Leaving the drains open would not cause the gland seal leak off line to become obstructed. D) High main condenser vacuum is not the primary cause of excessive gland steam leakage in this scenario.