Influences of multiple factors on pressure of RRI system in nuclear power plant

doi:10.16265/j.cnki.issn1003-3033.2018.03.024

China Safety Science Journal ›› 2018, Vol. 28 ›› Issue (3): 138-143.doi: 10.16265/j.cnki.issn1003-3033.2018.03.024

• Safety Science of Engineering and Technology • Previous Articles Next Articles

Influences of multiple factors on pressure of RRI system in nuclear power plant

GAO Chang^1,2, YUAN Jingkai³, ZHANG Kun^1,2, WANG Yong^1,2, ZOU Jinqiang^1,2

1 China Nuclear Power Operation Technology Corporation Ltd., Wuhan Hubei 430223, China;
2 Research Institute of Nuclear Power Operation, Wuhan Hubei 430074, China;
3 China Nuclear Power Operation Management Corporation.Ltd, Haiyan Zhejiang 314300, China

Received:2018-01-10 Revised:2018-02-26 Online:2018-03-28 Published:2020-11-09

Abstract

Abstract: In order to solve the problem of frequent opening of safety valve when switching between different series of RRI system in nuclear power plant, a certain nuclear power plant in China was taken as research object, and the Flowmaster software was used to simulate the pressure fluctuation in the process of switching between different series of cooling water system. Relations between pressure and influent factors, such as closing valve time, bypass flow rate of the pump, the opening time interval between the control valve and the pump, were studied. The results of simulation are verified. The results show that increasing the bypass flow of cooling water pump or opening the control valves before the equipment cooling water pump reaching the rated speed, can effectively reduce the pressure fluctuation when startup the pump, that increasing the closing time of control valves on the cold side of EAS heat exchanger can restrain the water hammer phenomenon during the instance of valve closing, and that the related commissioning results verify the conclusion of the simulation.

Key words: nuclear power plant, equipment cooling water system(RRI), pressure fluctuation, method of characteristics, transient calculation

CLC Number:

X945

GAO Chang, YUAN Jingkai, ZHANG Kun, WANG Yong, ZOU Jinqiang. Influences of multiple factors on pressure of RRI system in nuclear power plant[J]. China Safety Science Journal, 2018, 28(3): 138-143.

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Influences of multiple factors on pressure of RRI system in nuclear power plant

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