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| Influence of the Positioner Installing to Burnup Measurement |
| ZHANG Ming1,2,YAN Wei-hua2,ZHANG Li-guo3,XIAO Zhi-gang2,YANG Yuan-di1 |
1.National Institute of Metrology, Beijing, 100013 China
2.Department of Physics, Beijing, 100084 China
3.Institute of Nuclear and New Energy Technology, 100084 China |
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Abstract In order to improve the benefits of nuclear power plants and make full use of the nuclear fuels, it is necessary to perform the on-line nondestructive burnup measurement to the fuel pebbles from the high temperature gas-cooling reactor.Numerical calculations are carried out to simulate the absorptions of positioner materials on γ-rays.By analyzing the calculated results, it reveals that design parameters of the perforation can bring a larger variation to the intensity of radiations emitting from the positioned and further affect the on-line burnup measurement; Moreover, the intensity of radiations is not sensitive to the deviation between the positioner and perforation in the vertical direction.
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2011, Vol. 32 
