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A new wide-range reactor power-measuring channel

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6 Author(s)
Khaleeq, M.T. ; Electron. Div., PINSTECH, Islamabad, Pakistan ; Zaka, I. ; Qaiser, H. ; Nayyar, B.H.
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The power range channels of nuclear reactors are linear, which cover only one decade, so they do not show any response during the startup and intermediate range of the reactor operation. So, there is no prior indication of the channels during startup and intermediate operating ranges in case of failure of the detectors or any other electronic fault in the channel. A new reliable nuclear channel has been developed for reactor power measurement, which can be programmed to work in the logarithmic mode during startup and intermediate range of operation, and as the reactor enters into the power range, the channel automatically switches to the linear mode of operation. The log-linear mode operation of the channel provides wide-range monitoring, which improves the self-monitoring capabilities and the availability of the reactor. The channel can be programmed for logarithmic, linear, or log-linear mode of operation. In the log-linear mode, the channel operates partially in log mode and automatically switches to linear mode at any preset point. The channel was tested at Pakistan Research Reactor-1 (PARR-1), and the results were found in very good agreement with the designed specifications. This paper presents design and construction of the channel and field test results.

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Nuclear Science, IEEE Transactions on  (Volume:50 ,  Issue: 6 )