Error Compensation Method of Advanced Digital Reactivity Computer Measuring with Range Spanning

Bao Chao; Zhu Hongliang; Ceng Shaoli

doi:10.13832/j.jnpe.2015.S2.0073

Volume 36 Issue S2

Feb. 2025

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Bao Chao, Zhu Hongliang, Ceng Shaoli. Error Compensation Method of Advanced Digital Reactivity Computer Measuring with Range Spanning[J]. Nuclear Power Engineering, 2015, 36(S2): 73-77. doi: 10.13832/j.jnpe.2015.S2.0073

Citation:

Bao Chao, Zhu Hongliang, Ceng Shaoli. Error Compensation Method of Advanced Digital Reactivity Computer Measuring with Range Spanning[J]. Nuclear Power Engineering, 2015, 36(S2): 73-77. doi: 10.13832/j.jnpe.2015.S2.0073

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Error Compensation Method of Advanced Digital Reactivity Computer Measuring with Range Spanning

doi: 10.13832/j.jnpe.2015.S2.0073

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Iustitute of China, Chendu, 610041, China

Received Date: 2015-08-24
Rev Recd Date: 2015-11-25

Available Online: 2025-02-15

Abstract

Abstract

Dynamic control rod reactivity measurement（DCRM） technique has been developed, and it can reduce the difficulties and shorten the time for the zero power physics test at PWRs. Advanced Digital Reactivity Computer（ADRC） is used in the process of DCRM. Different from the traditional using, the reactivity meter will conduct the multi-range measurement to satisfy the requirement for multiple ranges in the quick decreasing of the current. Error occurred in the range change has effects on the result of reactivity measurement. This paper analyzes the characteristics of the detector current curve in DCRM, and presents the error compensation method with curve-fitting. Test results in nuclear plants show that the method can decrease the error in the range change from 48% to 2%.
- DCRM,
- Reactivity measurement,
- Range change