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Pan W.-W.,Suzhou Nuclear Power Research Institute
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2014

This article focuses on an advanced technique of detecting the aerosol radiation in the nuclear power plant containment air, and analyses the principle and algorithm of the technique, which is better than the other techniques. For the advanced technique, the Radon daughters are involved in the calculation algorithm, and then the Radon daughters can be compensated during the calculation process, which makes the calculated value more precise, and avoids the flash alarms caused by Radon daughters. This technique has already been used in some of the domestic nuclear power plants, and got very good user feedback, so this technique is a good choice for the new nuclear power plants. ©, 2014, Atomic Energy Press. All right reserved.

Yang C.,Suzhou Nuclear Power Research Institute
Advanced Materials Research | Year: 2013

The effective methods of the ageing and life assessment for large and medium-sized power transformers used in nuclear power plants are analyzed and described, including the thermal ageing life assessment method for transformer solid insulation, the gas analysis method of CO and CO2 in the transformer oil, the average degree of polymerization method, furfural content analysis method, and the analysis method based on the insulation ageing-related electrical parameters. The analysis results show that the methods used can reasonably assess the remaining life of the transformers. These methods have important reference value to the ageing and life management for the large and medium-sized power transformers in nuclear power plants. © (2013) Trans Tech Publications, Switzerland.

Shan Z.,Suzhou Nuclear Power Research Institute
PSAM 2014 - Probabilistic Safety Assessment and Management | Year: 2014

This paper presents the safety management system designed for CGNPC. It's developed based on the idea adopted from NRC, the Reactor Oversight Process (ROP). A system independent from the classic one is planned to be built with which system, risk management in three level including Unit level, Site level and multi-site level is provided in risk-informed manner using performance indicators and risk significances evaluated from internal and licensee events. The reports are provided both monthly and quarterly to the risk management committee to support decision-making.

Zhan Z.G.,Suzhou Nuclear Power Research Institute
Applied Mechanics and Materials | Year: 2014

This paper introduces the major indexes of the coating performance evaluation (Thickness, elastic modulus, bonding strength, surface quality, residual stress, etc.), and it introduces the application of nondestructive testing methods in order to evaluate each index. © (2014) Trans Tech Publications, Switzerland.

Yang C.F.,Suzhou Nuclear Power Research Institute
Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015 | Year: 2015

In order to ensure that the reliability and safety of nuclear power plants remain within acceptable limits and to achieve cost-effective investment, based on technical and economic analysis method, an economic analysis model of Life Cycle Management (LCM) for the generators and exciters at nuclear power plants is established. A nuclear power plant in operation is made as an example, the 40-year and 60-year alternative LCM plans for the plant are given. According to the proposed economic analysis model and various economic data input, the preventive maintenance costs, corrective maintenance costs, loss production costs, the net present value of total benefit and total investment for the LCM alternatives are output, and ultimately the net present value index is calculated to determine the advantages and disadvantages of various alternatives and to identify the best economic LCM alternative. The results provide a basis for decision making for the LCM and life extension plans in nuclear power plants. © 2015 Taylor & Francis Group, London.

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