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Fu C.Q.,Zhejiang University | Jin X.Y.,Zhejiang University | Jin N.G.,Zhejiang University | Zhao Y.B.,Hainan Nuclear Power Co. | Ge F.,Hunan Taohuajiang Nuclear Power Co.
Advanced Materials Research

According to the need of a nuclear power station under construction, the preparation of C35, C50 self-compacting concrete(SCC) and their long age mechanics experiment were carried on. The test results between SCC and the vibrating concrete were compared. The test results indicated that the work ability and mechanical properties of SCC can satisfy the nuclear power station project. The long age mechanical properties were corresponding to the ones of vibrating concrete. The test results can be a reference of SCC research. © (2011) Trans Tech Publications. Source

Wang Z.,Nuclear Power Institute of China | Yu J.,Nuclear Power Institute of China | Wang J.,Hainan Nuclear Power Co.
Hedongli Gongcheng/Nuclear Power Engineering

The safe-end weld of steam generator is narrow seam weld with dissimilar metal, the filling material is nickel alloy 152/182 (material 690). The interior structure is of great anisotropic, and fake signal may occur during the defect detection by ultrasonic wave and the error for defect location may be increased. Stratified inspection by ultrasonic transducers with different angle and focus is a practical method which is verified by the real inspection while the linear indication in the inside surface besides the interior flaws are detected. Source

Rao Z.-Q.,Hainan Nuclear Power Co.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology

There are differenton-line measurements for boron concentration in domestic PWR NPPs, such as neutron absorption, titration and density etc. The principles of measurement of boron concentration as well as the application and maintenance of relevant on-line boron analyzer in domestic PWR NPPs are described. The comparison for both advantage and disadvantage of the different on-line boron analyzers are also made in this paper. It can offer a reference for the on-line boron analyzers in model selection, operation, repair and maintenance as well as improvement of utilization. ©, 2015, Atomic Energy Press. All right reserved. Source

Han L.-Y.,Hainan Nuclear Power Co. | Yuan P.,China Nuclear Power Engineering Co.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology

It introduces a kind of quartz crucible thickness tester, with 241Am as the low energy gamma ray source, the material of the scintillator in the detector is a NaI (TI). The Precision machinery device drives the detector in the quartz crucible surface move around. The measuring instrument has the characteristics of high precision, simple operation, light and portable, the results are given for 5 seconds. Source

Li K.,Hainan Nuclear Power Co.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology

The different reasons of LPMS alarm in nuclear power plant have been analyzed. Based on this analysis, the analysis steps for Hainan nuclear power plant in case a LPMS alarm was proposed. The management measure for LPMS alarm analysis process of a domestic nuclear power plant has been suggested. It has reference value for nuclear power plant to analysis LPMS alarm reason. It's helpful to safety and economy of nuclear power plant. © 2015, Editorial Board of Nuclear Electronics & Detection Tech. All right reserved. Source

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