Question 265Steam Plants - 1st Asst/Chief

The correct answer is B) air leaks through the turbine glands. Dissolved oxygen in the condensate can result from air leaks through the turbine glands. When air enters the turbine glands, it can get drawn into the condensate system, increasing the dissolved oxygen content. This is because the turbine glands are designed to prevent air from entering the system, and any leaks in these seals can allow air to be introduced, leading to the presence of dissolved oxygen in the condensate. The other options are incorrect because: A) steam leaks into the gland leak off would not directly introduce dissolved oxygen, C) improper operation of the gland exhauster would not necessarily lead to dissolved oxygen, and D) vapor lock in the condensate pump would not be a source of dissolved oxygen.