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- W4365398431 abstract "Abstract During the normal operation of a pressurized water reactor plant, RPN430KA (quadrant power tilt rate over 3%) alarms were issued several times, and the alarm frequency increased with the increase of burnup, which affected the normal operation of the unit. The original signal of this alarm is from four power range channels (RPN). After the process of signal filtering, if the difference between the maximum and minimum nuclear power is still greater than 3%, the alarm will be triggered. In this paper, the root cause of the quadrant power tilt rate alarm phenomenon is studied, and targeted solutions are given. The research shows that the main factor affecting the alarm is the inconsistency between the filtering sampling time during the discretization process and the physical sampling time of the alarm signal, and the induced reason is that the fluctuation of nuclear power gradually increases with the deepening of burnup. The nuclear power fluctuation is a noise signal with too many complex factors but existed objectively. Therefore, in the case of large fluctuation of nuclear power, if the actual filtering effect is not achieved, it is easy to appear alarm phenomenon, which can be solved by modifying the sampling time of signal processing. The results of this paper can be used as reference for plant operation." @default.
- W4365398431 created "2023-04-14" @default.
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- W4365398431 date "2023-01-01" @default.
- W4365398431 modified "2023-09-30" @default.
- W4365398431 title "Study on the Cause and Solution of Quadrant Power Tilt Rate Alarm in a PWR Plant" @default.
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- W4365398431 doi "https://doi.org/10.1007/978-981-99-1023-6_40" @default.
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