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Methods to study power density distribution in the IVG.1M research reactor after conversion
R R Sabitova1, I V Prozorova2, R A Irkimbekov2
1National Nuclear Center, Kurchatov, Kazakhstan; National Research Tomsk Polytechnic University, Tomsk, Russia.
Summary
This study validates activation gamma-spectrometry for measuring power density in Kazakhstan
Area of Science:
- Nuclear Engineering
- Reactor Physics
- Applied Nuclear Physics
Background:
- The IVG.1M research reactor in Kazakhstan is converting to low-enriched fuel as part of global non-proliferation efforts.
- Fuel composition changes necessitate accurate assessment of power density distribution for safe and efficient reactor operation.
Purpose of the Study:
- To validate the activation gamma-spectrometry method for determining power density distribution in the IVG.1M reactor's fuel after conversion.
- To provide a preliminary assessment of experimental results using MCNP6 calculations for power distribution and peaking factors.
Main Methods:
- Activation gamma-spectrometry for in-situ power density measurement.
- MCNP6 Monte Carlo simulations for preliminary power distribution and peaking factor analysis.
Main Results:
- Successful approbation of the activation gamma-spectrometry method for post-conversion fuel.
- MCNP6 calculations provided initial data on power distribution and peaking factors, aiding experimental assessment.
Conclusions:
- Activation gamma-spectrometry is a viable method for assessing power density in converted research reactors.
- Accurate power density mapping is crucial for optimizing reactor performance, fuel utilization, and safety post-conversion.
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