Korea Hydro & Nuclear Power’s experimental results regarding the cause of the generation of 713,000 becquerels of large-scale tritium (radioactive substances) in the groundwater of the Wolseong nuclear power plant site are controversial. It is explained that the concentration of tritium in the air in the region increased by 1800 times over 75 days, but it was not possible to explain why the concentration in the air in this area was particularly high.
KHNP also admitted to their fault, saying that it was not until six years after the accident that the shielding membrane of the spent nuclear fuel tank (SFB) was damaged. However, they have no idea where and how they were damaged, where leaks were, and why they were damaged.
Wonheung University Han Su-won, head of Wolseong Wonjeon, made this statement at a report on the status of a member of the Democratic Party of Korea on the morning of the 18th. Headquarters Won said that during the reinforcement work of Wolseong nuclear power plant No. 1 in 20112 after the Fukushima nuclear accident, there was such an accident during the change design process without any additional work, and that international damage compensation procedures are in progress.
“The most important part of this incident is that there is an unplanned outflow, and the Wolseong nuclear power plant unit 1 was damaged during construction, but the Korean National Security Council did not know at all, and did not recognize the damage for 6 or 7 years,” said “ The public is not convinced because there is no investigation of where and how much the leak was, and it is safe.”
Head of Wonheung University said, “What we did wrong is correct,” he said, “I have to be aware of it during the design change process, but the original designer was vigilant, and after the reinforcement of Unit 1, Wolseong Nuclear Power Plant 2, 3, 4 In the process of reviewing the drawings for the construction of the unit, he recognized that’there is a shield plate here, it must have been damaged’ and reported it to the original bank.” Nevertheless, Director Won said, “I was lucky,” and said, “The tritium leak was not detected in the primary barrier (of spent nuclear fuel), and the function of concrete and fiberglass epoxy liner (which is a component of the barrier) is maintained.” He also claimed that no gamma nuclides were found in the soil survey (on the side of Unit 1).
Above all, with the cause of the discovery of 713,000 becquerels/liter of tritium inside the building, Director Won, the head of the headquarters, found the cause of the concentration of 71 million becquerels, as the concentrations in the water flowing into the drainage were all 2290-2300 becquerels/liter. I confessed that I couldn’t. Director Won explained that as a result of inquiries to various academic circles, the experiment was conducted after hearing that there is a thesis that if the concentration in the air is high, it is adsorbed to water. General Manager Won claimed that the concentration of tritium gradually increased and increased to about 1800 times when the water at the site was scooped up (at the location) and checked once for two weeks. “We have experimental data where the tritium concentration increased from 600 becquerels/liter in 75 days to 1.2 million becquerels/liter,” he said.
Lee Sung-man and Democratic Party lawmaker asked, “Why is there only one place with more than 710,000 becquerels?”, and Rep. Moon Sang-gon of the same party also said, “If it rose to 1.2 million becquerels/liter in 75 days, the average of 16,000 becquerels/liter per day was tripled. It means that hydrogen has to be adsorbed to water, but what is the cause?” Then, Director Won replied, “There are not many papers on transfer in the air, so verification is necessary.”
“Isn’t there a problem with the internal system?” said Rep. Moon Sang-gon again. “If it is purified daily through air such as ventilation, 12,000 becquerels per day should not be adsorbed to water, but the internal management is not working properly. Is that normal?” he asked.
Therefore, Director Won Won said, “The environment of the experiment itself is normal, and we have the data of the results, but we have to discuss it with the more renowned Radiological Society.” “I explained the same to the members of the National Powers and then commented on the article It turned out that the people didn’t understand anything.” “I’m not a radiation expert, so I need verification, but the cause we found is highly likely.”
Rep. Yang Lee Won-young said, “If there is a leak, you have to check where it leaked.” “There are thousands of people working, but some boundary wells (the concentration of tritium) also produce 924 becquerels per liter, and the concentration of Bonggil-ri groundwater continues to rise. It must be prevented from leaking.”
Local residents also expressed concern. Lee Jae-geol, Director General of the Countermeasure Committee Yangnam-myeon, Gyeongju City, came to the scene after the explanation from Han Suwon’s side on this day and told the lawmakers, “It is most dangerous to not know where the leak is, where it flows, and where it is going.” If there is, please find it and take precautionary measures.”
Other residents were also concerned that tritium was detected only in the urine of five children in Yangnam-ri and five children in Bulgwang-dong, Seoul.
KHNP and Wonheung University headquarters inspected the urine samples of 420 residents in the vicinity in 2014, and found that the tritium concentration was 28.8 becquerels/liter.The annual limit dose was 0.06% of 1 millisievert, and it was about 1 in 85 of the x-ray. Insisted that it is not as harmful.
Copyright © Media Today, unauthorized reproduction and redistribution are prohibited.