Abstract
The source range of the nuclear instrumentation system (RPN) is used to monitor the reactor neutron flux from shutdown to initial startup. When the count rate measured by source range detector is higher than the set value, a “high flux at shutdown alarm” will be triggered. This alarm alerts the operators that positive reactivity has been added to the core, such as unexpected dilution or control rods withdrawal. This paper analyzes the source range high flux at shutdown alarm setpoint update logic of a nuclear power plant. It is found that the setpoint will be updated to a low value after the source range is automatically put into operation, resulting in false triggering of the alarm. This paper discusses the avoidance measures of alarm false triggering from the perspective of operational administration and control logic optimization. The results show that both measures are feasible.
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References
Mao, H., **ong, W., Que, J., et al.: The principle and engineering practice of ex-core nuclear instrumentation system in nuclear power plant. Nucl. Electron. Detect. Technol. 34(6), 758–761 (2014)
Wang, X.: Analysis of Boron Dilution Accident. China Nuclear Power Design Co., ltd, Shenzhen (2014)
Li, L., Wang, Z., Guan, Z., et al.: The effect of statistical fluctuation on control operation and the method of its elimination in nuclear gauge. Nucl. Electron. Detect. Technol. 2, 87–91 (1993)
Li, J., Fan, W.: Section 6.2 Alarm Card of Nuclear Instrumentation System (RPN) System Design Manual. Shenzhen CGN Engineering Design Co., Ltd. (2019)
**e, Z., Wu, H., Zhang, S.: Physical Analysis of Nuclear Reactors, pp. 240–242. **’an Jiaotong University Press, **’an (2004)
Tang, B., Ge, L., Fang, F., et al.: Principles of Nuclear Radiation Measurement, pp. 120–125. Harbin Engineering University Press, Harbin (2011)
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© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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Yang, WQ. et al. (2023). Study on High Flux at Shutdown Alarm Setpoint Automatic Update Logic. In: Gu, P., Xu, Y., Chen, W., Chen, R., Sun, Y., Liu, Z. (eds) New Energy Power Generation Automation and Intelligent Technology. SICPNPP 2023. Lecture Notes in Electrical Engineering, vol 1055. Springer, Singapore. https://doi.org/10.1007/978-981-99-3455-3_2
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DOI: https://doi.org/10.1007/978-981-99-3455-3_2
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