scholarly journals Distribution characteristics of dissolved oxygen and stable isotope compositions of shallow groundwater in the vicinity of an inland nuclear power plant, HK, China

2019 ◽  
Vol 98 ◽  
pp. 09035
Author(s):  
Jinjing Zan ◽  
Yihui Dong ◽  
Weimin Zhang ◽  
Weidong Xu ◽  
Jiale Li ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Dissolved Oxygen ◽  
Nuclear Power ◽  
Atmospheric Precipitation ◽  
Shallow Groundwater ◽  
Jiangxi Province ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Hydrogen And Oxygen Isotope

The hydrochemical and stable hydrogen and oxygen isotope compositional characteristics of surface and shallow groundwaters in the vicinity of HK nuclear power plant in Jiangxi Province of China. Dissolved oxygen (DO) contents of shallow groundwaters range between 1.75 to 19.40 mg/L, with variations related to well depth, groundwater level, and oxidation-reduction potential. Respective ranges of δD and δ18O (‰ VSMOW) in shallow groundwaters are -40.7 to -24.9 and -6.71 to -5.40, with average values of -31.8 and -5.87. The δD-δ18O relationship for the study area is δD = 8.3δ18O +16.8, indicating that atmospheric precipitation is the major recharge source of shallow groundwaters.

Lessons Learned: Low Condenser Vacuum/High Condensate Dissolved Oxygen Levels at D. C. Cook Nuclear Power Plant

2005 ◽  
Author(s):  
Komandur S. Sunder Raj ◽  
Richard A. Harris
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Dissolved Oxygen ◽  
Nuclear Power ◽  
Lessons Learned ◽  
Design Performance ◽  
Oxygen Levels ◽  
Proper Design ◽  
Ejector System ◽  
Air Ejector

During the summer of 2002, the main condenser vacuum started degrading at both Units 1 and 2 of the D. C. Cook Nuclear Power Plant. An evaluation of the high condensate dissolved oxygen levels that were being experienced at Unit 1 indicated performance degradation of the steam jet air ejector system. This paper describes the lessons learned from detailed analysis, inspection and evaluation of the design, performance and operation of the steam jet air ejector systems for both units of the D. C. Cook Nuclear Power Plant. Various corrective actions undertaken as well as proposed for future implementation are discussed and recommendations are provided for proper design, performance, operation and maintenance of the steam jet air ejector systems.

Fuzzy multi-objective decision making approach for nuclear power plant installation

2020 ◽  
Vol 39 (5) ◽  
pp. 6339-6350
Author(s):  
Esra Çakır ◽  
Ziya Ulukan
Keyword(s):  
Linear Programming ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Energy Supply ◽  
Energy Demand ◽  
Nuclear Power ◽  
Power Plants ◽  
Total Duration ◽  
Objective Functions ◽  
Multi Objective

Due to the increase in energy demand, many countries suffer from energy poverty because of insufficient and expensive energy supply. Plans to use alternative power like nuclear power for electricity generation are being revived among developing countries. Decisions for installation of power plants need to be based on careful assessment of future energy supply and demand, economic and financial implications and requirements for technology transfer. Since the problem involves many vague parameters, a fuzzy model should be an appropriate approach for dealing with this problem. This study develops a Fuzzy Multi-Objective Linear Programming (FMOLP) model for solving the nuclear power plant installation problem in fuzzy environment. FMOLP approach is recommended for cases where the objective functions are imprecise and can only be stated within a certain threshold level. The proposed model attempts to minimize total duration time, total cost and maximize the total crash time of the installation project. By using FMOLP, the weighted additive technique can also be applied in order to transform the model into Fuzzy Multiple Weighted-Objective Linear Programming (FMWOLP) to control the objective values such that all decision makers target on each criterion can be met. The optimum solution with the achievement level for both of the models (FMOLP and FMWOLP) are compared with each other. FMWOLP results in better performance as the overall degree of satisfaction depends on the weight given to the objective functions. A numerical example demonstrates the feasibility of applying the proposed models to nuclear power plant installation problem.

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