Method for detecting and disposing marine organisms invading nuclear power plant cold source sea areas

Abstract

The invention discloses a method for detecting and disposing marine organisms invading nuclear power plant cold source sea areas. The method comprises the following steps of: detecting a marine organism condition of a nuclear power plant cold source sea area by utilizing a sonar detector and an underwater camera, respectively calculating a first marine organism density and a second marine organismdensity according to the detection condition, and fusing the first and second marine organism densities to form a comprehensive density of invading marine organisms, wherein the calculation correctness is above 95%; obtaining invading strength indexes of the marine organisms in the nuclear power plant cold source sea area through a fuzzy neural network algorithm by considering marine environmentfactors; and finally forming a decision strategy table according to the invading strength so as to provide an effective disposing method for workers. According to the method for detecting and disposing marine organisms invading nuclear power plant cold source sea areas, the pre-warning operation time is within 30 seconds; and according to simulation experiment data, the false alarm rate of the pre-warning is not greater than 5%, so that urgent operation stop events, caused by invasion of marine organisms, of reactors are effectively avoided.

Description

technical field [0001] The invention relates to a detection system, method and application of marine organisms intruding into a cold source sea area of ​​a nuclear power plant. Background technique [0002] In recent years, the cluster outbreak of marine organisms has seriously affected the safe production of nuclear power plants. In the winter of 2014 and 2015, the red tide of Phaeocystis in coastal waters of Guangxi covered the waters near Fangchenggang, and the 2-3cm Phaeocystis clogged the filter, posing a threat to the safety of the cold source system of nuclear power facilities. In December 2009, a large number of aquatic plants invaded and blocked the filter system of the pumping station of Unit 4 of the French CRUAS nuclear power plant, causing the unit to lose its cold source. In July 2014, a large number of jellyfish flooded into the water intake of the circulating water filtration system in Hongyanhe Nuclear Power Plant, resulting in the shutdown of unit H1 / 2. I...

AI Technical Summary

Problems solved by technology

In July 2014, a large number of jellyfish flooded into the water intake of the circulating water filtration system in Hongyanhe Nuclear Power Plant, which caused the shutdown of H1 / 2 unit

In August 2015, a large number of Haitian melons flooded into the water intake of Ningde No. 3 unit, which caused the shutdown of the unit

In January 2016, Unit 2 of Ling Ao Nuclear Power Plant was shut down due to the influx of sea shrimp into the water intake, which led to the emergency shutdown of the reactor

This patent mainly provides an overall solution for the detection of cold source sea areas of nuclear power plants, and does not provide a solution for how to ensure the accuracy of detection of invasive marine organisms

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