|SUBJECT:||M.S. Thesis Presentation|
|TIME:||Thursday, March 28, 2013, 11:00 a.m.|
|PLACE:||Love Building, 109|
|TITLE:||Feasibility Study of a Controllable Mechanical Seal for Reactor Coolant Pumps|
|COMMITTEE:||Dr. Richard Salant, Chair (ME)
Dr. Jeffrey Streator (ME)
Dr. Scott Bair (ME)
In a nuclear power plant, a critical system for both safety and performance is the reactor cooling system, which utilizes one or more large centrifugal pumps. Most reactor coolant pumps contain a multi-stage mechanical face seal system for fluid containment. The main advantage of mechanical seals is their self-adjusting properties. These seals are tuned so that they automatically adjust to varying fluid conditions to provide adequate leakage control. However, over time, wear, chemical deposition, or changing operating conditions can alter the face gap, which is the critical geometry between the sealing faces of a seal. An altered face gap can lead to too much or not enough fluid leakage, which must be maintained within a certain range to provide lubrication and cooling to the seal faces without excessive coolant volume loss.