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Guo C.,Daya Bay Nuclear Power Operations and Management Co.
Hedongli Gongcheng/Nuclear Power Engineering | Year: 2010

In order to analyze the differences between the Anticipated Transient Without Reactor Trip (ATWT) and other reactor protection methods, this paper analyzes in detail the realizing means of ATWT and the effect of lost of power supply on the units based on Daya Bay and Ling'ao Nuclear Power Stations by system wiring diagram. Based on the comprehensive analysis, this paper proposes the sequence for powering when recovering the power source after ATWT power supply (LCC/LNE) loss for Daya Bay and Ling'ao Nuclear Power Stations. Source


Shi J.,Suzhou Nuclear Power Institution Co. | Zeng Q.,Daya Bay Nuclear Power Operations and Management Co.
Advanced Materials Research | Year: 2012

The Ageing mechanisms of electromagnetic relay were discussed. And the key ageing indicators were found out. Then, the test methods of ageing indicators were introduced. After that, a method to evaluate the lifetime for the coil of electromagnetic relay was proposed. Accelerated ageing test was conducted to the coils, and the key ageing indicators were collected periodically. According to those test data, the ageing condition and lifetime were evaluated. In the end of the paper, examples about assessing the ageing condition and lifetime were given separately. © (2012) Trans Tech Publications, Switzerland. Source


Zhang S.,Suzhou Nuclear Power Research Institute | Wu T.,Daya Bay Nuclear Power Operations and Management Co. | Mo C.,Suzhou Nuclear Power Research Institute
Hedongli Gongcheng/Nuclear Power Engineering | Year: 2015

This paper uses Reliability-centered Maintenance (RCM) method to optimize the maintenance strategy of circulating water pump in Daya Bay nuclear power plant. The overhaul cycle of circulating water pump is given in the paper, and the cycle is far more than the proposed cycle (8 years) of vendor and the cycle of similar equipment at home and abroad, not only greatly reducing the maintenance costs, but also decreasing maintenance-induced failures, thus further improving the equipment reliability and availability. ©, 2015, Editorial Office of Nuclear Power Engineering. All right reserved. Source


Liu Y.-S.,Harbin Engineering University | Liu Y.-S.,Finnish Center for Radiation and Nuclear Safety | Tan S.-C.,Harbin Engineering University | Gao P.-Z.,Harbin Engineering University | Yuan Q.-B.,Daya Bay Nuclear Power Operations and Management Co.
Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | Year: 2012

Pulsating laminar flow field in rectangular channel was investigated analytically. The influences of the flow fluctuation period, relative amplitude and aspect ratio on the flow field in rectangular channel were analyzed. The results show that velocity is composed of the steady component and the oscillating component at every point in rectangular channel. Compared with steady flow filed, the flow filed changes a lot under pulsating condition due to the oscillating velocity component, which leads to some change of velocity gradient in the near wall region. Source


Wang Q.,Daya Bay Nuclear Power Operations and Management Co. | Liu G.,PLA Air Force Aviation University | Shi Y.,Jilin University
Lecture Notes in Electrical Engineering | Year: 2012

This paper describes a technology of multi-dim-small-target detection. Two-dimensional (2-D) adaptive filtering and multi-dim-small-target segmentation algorithm is suggested to enhance 2-D signals of small spatial extent embedded in additive white Gaussian noise(AWGN) and detect multi-dim-small-target in complex background. The coefficients of the adaptive filter converge to a special 2-D slice of the fourth-order cumulant function of the input signal. The 2-D filter is called the 2-D cumulant-based adaptive enhancer (2DCBAE). And the dim-small-target segmentation algorithm is combining some theory, such as the wavelet energy transformation, image reconstruction, data fusion and self-adaptive threshold segmentation. © 2012 Springer-Verlag Berlin Heidelberg. Source

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