Study on T2 Test Time Optimization Method of DAS

Zhang Ruixia; Wang Dong; Li Gang; Chen Yongqun; Wang Jikun; Han Bin

doi:10.13832/j.jnpe.2023.03.0185

Volume 44 Issue 3

Jun. 2023

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2023 > 44(3): 185-188

Zhang Ruixia, Wang Dong, Li Gang, Chen Yongqun, Wang Jikun, Han Bin. Study on T2 Test Time Optimization Method of DAS[J]. Nuclear Power Engineering, 2023, 44(3): 185-188. doi: 10.13832/j.jnpe.2023.03.0185

Citation:

Zhang Ruixia, Wang Dong, Li Gang, Chen Yongqun, Wang Jikun, Han Bin. Study on T2 Test Time Optimization Method of DAS[J]. Nuclear Power Engineering, 2023, 44(3): 185-188. doi: 10.13832/j.jnpe.2023.03.0185

Citation:

PDF( 14301 KB)

Study on T2 Test Time Optimization Method of DAS

doi: 10.13832/j.jnpe.2023.03.0185

1.
China Techenergy Co., Ltd., Beijing, 100089, China
2.
CGN Huizhou Nuclear Power Co., Ltd., Huizhou, Guangdong, 516003, China

Received Date: 2022-07-18
Rev Recd Date: 2023-03-31
Publish Date: 2023-06-15

Abstract

Abstract

In the logic function verification test (T2 test) of the Diversity Actuation System (DAS), the verification of the timer in the logical link is often carried out by waiting, making the test last for more than 2 hours, causing human error in the waiting process. In order to reduce T2 test time and human failure, in this study, an optimization method of T2 test time for DAS based on simple hardware technology was proposed. When verifying the logic function, the timers were bypassed, and then the timers were accelerated by adjusting the reference clock of them. The result shows that the total time of T2 test for DAS can be controlled within 30 minutes. Therefore, compared with the traditional test method, the test time is greatly shortened, and the human failure during the test can be effectively avoided, so as to meet the latest requirements of T2 test time in nuclear power plants.
- Diversity actuation system (DAS),
- T2 test,
- Timer,
- Bypass,
- Reference clock

FullText(HTML)

References(9)

References

[1]	IEEE. IEEE standard criteria for the periodic surveillance testing of nuclear power generating station safety systems: IEEE 338-2006[S]. U.S.,Washington: IEEE, 2006: 1-63.
[2]	IEC. Nuclear power plants-instrumentation and control systems important to safety-surveillance testing: IEC 60671: 2007[S]. Geneva: IEC, 2007: 50.
[3]	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 核电厂安全系统定期试验与监测: GB/T 5204-2008[S]. 北京: 中国标准出版社, 2009: 12.
[4]	韩宾,王纪坤,李刚,等. 核电站多样性驱动系统定期试验方案设计[J]. 自动化博览,2017(7): 86-89.
[5]	WOOD R T, BELLES R, CETINER M S, et al. Diversity strategies for nuclear power plant instrumentation and control system: NUREG/CR-7007[R]. U.S.: NRC, 2010.
[6]	NASER J. Guidelines on the use of field programmable gate arrays in nuclear power plant I&C systems: TR-1019181[R]. U.S.: EPRI, 2009.
[7]	NRC. Method for performing diversity and defense-in-depth analyses of reactor protection systems: NUREG/CR-6303[R]. U.S.,Washington: NRC, 1994.
[8]	陈鹏,李谢晋,罗炜,等. 基于FitRel系统平台的多样化反应堆保护系统定期试验设计[J]. 中国核电,2020, 13(5): 611-616.
[9]	孙汉虹, 程平东, 缪鸿兴, 等. 第三代核电技术AP1000[M]. 北京: 中国电力出版社, 2010: 150-300.