Fixed point acoustic monitoring of marine organisms in open water intake channel of nuclear power plant

2021 ◽  
Author(s):  
Zhengchun Hu ◽  
Wei Meng
Keyword(s):  
Fixed Point ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Intake ◽  
Nuclear Power ◽  
Open Water ◽  
Acoustic Monitoring ◽  
Marine Organisms

scholarly journals Acoustic Evaluation of Fishery Resources in Seawater Reservoir and Water-Intake Open Channel of Taishan Nuclear Power Plant

2020 ◽  
Vol 194 ◽  
pp. 01021
Author(s):  
MENG Wei ◽  
LIU Xiaolin ◽  
TANG Yong ◽  
WANG Shuai ◽  
ZHANG Jinfei
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Intake ◽  
Nuclear Power ◽  
Large Scale ◽  
Open Water ◽  
Survey Area ◽  
Fish Spawning ◽  
Acoustic Evaluation ◽  
The Impact

The CGN Taishan NPP seawater storage is a land-sealed type and is connected to the open water intake channel of Dajin Island in the open sea through a subsea tunnel. Due to the impact of large-scale facility aquaculture in the nearby seas, fish spawning grounds have been formed in this area, and fish breeds faster. A large number of fish have impacted on safe operation of nuclear power. In response to this situation, this study conducted acoustic navigation surveys of fish resources in most waters of the “Sea Reservoir” and “Water intake channel”, using broadband scientific fish finder system (EK80, 120kHz, 200kHz) produced by Norwegian Simrad Company. Evaluation of acoustic resources using echo integration method. The survey scope of seawater storage in this survey is from the entrance to the first barrier (around a distance of 760m) and from the first barrier to a second barrier (around a distance of 220m); the survey distance of the water intake channel is about 1460m. From the echo image, it can be found that the zooplankton in the sea reservoir is much smaller than the water intake channel, and the fish size of the water intake channel is much larger than that of the sea channel.Acoustic data was processed and analyzed using Echoview software to calculate the average SV and detect the strength of the single target. The results show that in the survey area of the Taishan Nuclear Power Plant Hai Reservoir, the total number of fish is about 1.38 million, the total weight is about 13.6 tons, and the fish with a body length of less than 20cm is the majority, and there are fewer large-sized fish; The total resources in the survey area is about 47 tons, with a total number of 27 million, and has a high density.

scholarly journals Studies on the Effect of the Warm Water Effluent from a Nuclear Power Plant on Marine Organisms

1982 ◽  
Vol 4 (1) ◽  
pp. 1-4
Author(s):  
Tôru YASUDA ◽  
Masakazu KAWASHIRO ◽  
Toshiaki HORI
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Marine Organisms ◽  
Warm Water

Feasibility and Implementation of the Modified Clay Technique in Control of Phaeocytstis Globosa Blooms in the Water-Intake Area of the Fangchenggang Nuclear Power Plant

2017 ◽  
Author(s):  
Zhi-ming Yu ◽  
Kai Wang ◽  
Xi-hua Cao ◽  
Bai-zhong Wang ◽  
Xiu-xian Song ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Intake ◽  
Nuclear Power ◽  
Cold Water ◽  
Removal Rate ◽  
Water Source ◽  
Modified Clay ◽  
Algae Blooms ◽  
Viable Approach

In the current study, we demonstrated the effectiveness of using modified clay as an emergency treatment for controlling Phaeocystis globosa blooms in terms of the removal mechanism, removal rate in both the laboratory and field, and the engineering required. Based on these results, we developed a series of blueprints, including the monitoring and early warning of P. globosa blooms in the water-intake area of the Fangchenggang nuclear power plant (NPP), the manufacture of the modified-clay emergency disposal facilities, and the operation schemes in treating different scale of blooms. From December 2014 to February 2015, modified clay was applied to successfully control P. globosa blooms and to effectively protect the cold-water source of the NPP. Thus, a set of engineering solutions using modified clay was established and confirmed to be a viable approach for treating harmful algae blooms that threaten the cold-water sources of NPPs.

scholarly journals Studies on the Effect on Marine Organisms of the Warm Water Effluent from a Nuclear Power Plant

1981 ◽  
Vol 3 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Tôru YASUDA ◽  
Masakazu KAWASHIRO ◽  
Kenji HIBINO
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Marine Organisms ◽  
Warm Water
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