What is the purpose of a recirc line on a turbine driven feed pump?

Study for the Massachusetts 3rd Class Engineer Exam. Access flashcards and multiple choice questions with hints and explanations. Prepare for success on your exam!

The purpose of a recirc line on a turbine-driven feed pump is to enable water to return to the feedwater tank. This function is crucial in maintaining proper pressure and flow conditions within the system. By allowing a portion of the water to recirculate, the system can manage the flow rate more effectively, especially during varying load conditions. It helps in preventing issues such as cavitation by ensuring that the pump maintains a stable supply of fluid even when the demand fluctuates.

Recirculation also aids in effectively managing the temperature and pressure within the feed pump and associated lines, allowing for safe and efficient operation. By ensuring that excess water is returned to the feedwater tank, the system can avoid running dry, which would put the turbine and pump at risk of damage.

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