Study on Cooling Water Source Seawater Filtration System of Nuclear Power Plant

In this study, a new method of estimating the leakage positions of cooling water using a stereo camera for the Fukushima Daiichi Nuclear Power Plant (FDNPP) is proposed. A stereo camera mounted on an inspection system with a rotating base was inserted into the pedestal below the reactor pressure vessel (RPV), and the waterdrops from the leakage position were captured using a stereo camera. We estimated the leakage positions by triangulating the waterdrop trajectory lines in the stereo image. The main contribution of this study is the extraction and matching of the waterdrop trajectories in a stereo image in the FDNPP. The radiation noise is intense inside the pedestal because of the presence of fuel debris. Therefore, we propose a method that is robust against radiation noise. We assume that the waterdrops drip vertically in indoor environments without wind, such as in the FDNPP. Hence, the orientation of the stereo camera can be adjusted by the rotating base such that the vertical lines in the three-dimensional space are also projected as vertical lines in the image planes. Thereafter, the columns of pixels in the images are treated as image features and used to extract and match the waterdrop trajectories. We demonstrated the effectiveness of our leakage position estimation method in a simulated environment of the FDNPP with gamma-ray image noise.

Download Full-text

Onshore Nuclear Power Plant Concept with Enhanced Passive Safety System

European Journal of Engineering Research and Science ◽

10.24018/ejers.2019.4.6.1403 ◽

2019 ◽

Vol 4 (6) ◽

pp. 155-159

Author(s):

A.H.M. Iftekharul Ferdous ◽

T. H. M Sumon Rashid ◽

Md Asaduzzaman Shobug ◽

Tanveer Ahmed ◽

Nitol Kumar Dutta

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Power Plants ◽

Water Source ◽

Passive Safety ◽

Electric Power Supply ◽

Passive Safety Systems ◽

Passive Safety System ◽

Safety Systems

Bangladesh is a developing country and it’s increasing economy can be maintained by providing sufficient amount of electric power supply. Therefore government is initiating Rooppur nuclear power project is one of them which is needed to be sited beside a vast amount of water source, lowest populated area and away from the locality to reduce the damage caused by any nuclear accidents. In this thesis paper we have shown that, the the dangers of residing errors of Rooppur nuclear power plant and give a proposal to go for onshore nuclear power plant in Bangladesh with two proposed designs of passive safety systems PSS-I & PSS-II. These systems will give safety to the power plants in the case of plant blackout during accidents.

Download Full-text

Study of the Rostov nuclear power plant efficiency operation under increased vacuum value

MATEC Web of Conferences ◽

10.1051/matecconf/202032903049 ◽

2020 ◽

Vol 329 ◽

pp. 03049

Author(s):

Aleksey Babushkin ◽

Sergey Skubienko ◽

Ludmila Kinash

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Water Temperature ◽

Nuclear Power ◽

Cooling Water ◽

Climatic Conditions ◽

Pressurized Water Reactor ◽

Pressurized Water ◽

Cooling Water Temperature ◽

Turbine Condenser

In this study, the influence of the cooling water temperature on the thermal efficiency of a conceptual pressurized-water reactor nuclear- power plant is studied. The change in the cooling water temperature can be experienced due to the seasonal changes in climatic conditions at plant site. The article presents the results of technical and economic parameters study of nuclear power unit’s operation under increased vacuum value. Investigated seasonal variations of cooling water temperature, cooling water temperature influence on the vacuum temperature in the turbine condenser, and changing the basic technical and economic performance of nuclear power station. The mathematical model of calculation the nuclear power plant operation for a 1000 MW power unit was developed.

Download Full-text

The Simulation Research of Noncondensable Gas to Condensation in Secondary Side Condenser of Floating Nuclear Power Plant Based on RELAP5

Volume 6B: Thermal-Hydraulics and Safety Analyses ◽

10.1115/icone26-82222 ◽

2018 ◽

Author(s):

Si-wei Yan ◽

Chun-mei Li ◽

Tie-bo Liang ◽

Jing Zhao ◽

Cheng-ming Hao ◽

...

Keyword(s):

Heat Transfer ◽

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Cooling Water ◽

Gas Content ◽

Simulation Research ◽

Cooling Water Temperature ◽

Noncondensable Gas ◽

Secondary Side

Similar to conventional nuclear power plant, condensate water subcooling is a common problem in secondary coolant of floating nuclear power plant, which is caused by many reasons. In this article, RELAP5 is used to simulate the phenomenon of condensate water subcooling caused by noncondensable gas. The influence of noncondensable gas to condenser pressure, subcooling temperature, heat transfer rate, terminal temperature difference, cooling water temperature rise is presented. The results obtained through this study have shown that the model with non-condensable gas in steam can simulate condensate water subcooling, and reveal the discipline of condenser heat transfer characteristics as a function of noncondensable gas content.

Download Full-text