Title page for ETD etd-05112006-154745
|Type of Document
||Herr, John D.
||Determining the moderator temperature coefficient in a PWR
|Thomas, James R. Jr.
|Mitchell, Larry D.
|Parkinson, Thomas F.
|VanLandingham, Hugh F.
|Wicks, Alfred L.
- Pressurized water reactors Thermodynamics
- Pressurized water reactors Research
|Date of Defense
An on-line, passive method for monitoring the moderator temperature coefficient
(MTC) in a pressurized water reactor is described and compared to an analytical
model. The method correlates fluctuations in the neutron flux with fluctuations in the
coolant temperature. Results show that the frequency response function between the
in-core neutron flux and thermocouple signals is proportional to the MTC and can be
used to monitor changes in the MTC throughout the fuel cycle. An analytical model
is also formulated and used to investigate how the neutron flux and coolant temperature
fluctuations are related and change in the axial core direction. The analytical
model results agree reasonably well with the experimental results.
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